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(meteorobs) Radio Meteor Observation Bulletin [RMOB] December 1999
------- Forwarded Message
From: steyaert@vvsdot be (Chris Steyaert)
To: meteorobs@jovian.com
Subject: Radio Meteor Obs. Bull. December 1999
Date: Sat, 08 Jan 2000 17:23:41 GMT
Radio Meteor Observation Bulletin No. 77 January 2000
1. FORWARD SCATTER METEOR OBSERVATIONS
Observer: Enric Fraile Algeciras
Location: Paseo Bonanova, 8 Barcelona (02 07'E, 41 24' N)
Frequency: 48.24715 MHz.
Transmitter Location: still working to identify, possibly South German C2,
100 kW, horizontal polarisation)
Antenna: 6-element Yagi 617-6B, 14 dBd gain.
astronomical azimuth 215 deg (=NE), elevation 0 deg.
Antenna: Six element Yagi 617-6B, 14 dBi gain, horizontal polariz.
Azimuth 200 deg (NE), elevation 20 deg
Receiver: home made converter 20 dB gain, 1 dB noise and Kenwood TS-830S.
10 dB attenuator in the receiver to reduce direct reception
Sensitivity: 0.25 uV for 10 dB S/N
Observing method: the audio signal of the video carrier is received using
a narrow CW filter (500 Hz) and fed into the PC in real time.
Data sampling system: using a super 14 bits A/D card to PC/XT
and "Data Capture" software with 1 second/18 sampling interval
to store all the > 0.5 s reflections.
| Dec 1999
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
- ----+---------------------------------------------------------------
0h| 2 1 9 7 4 2 9 6 8 7 2 4 10 31 74 5
1 | 1 6 10 3 11 7 6 3 10 2 10 3 4 25 53 3
2 | 3 7 6 4 4 3 7 4 9 2 5 5 3 10 44 17
3 | 3 3 3 7 7 6 4 6 10 10 4 8 2 4 18 26
4 | 5 1 4 5 2 13 2 3 7 6 19 14 12 4 2 24
5 | 5 3 12 3 17 9 5 10 9 17 14 20 26 45 18 7
6 | 1 2 14 8 10 6 11 13 16 11 15 26 40 47 32 6
7 | 2 2 7 5 4 6 17 5 9 12 11 13 38 26 31 19
8 | 2 2 30 10 1 12 7 11 11 26 7 21 22 45 38 7
9 | 2 2 2 10 1 7 6 10 9 15 33 7 14 28 26 21
10 | 1 2 9 3 0 6 7 5 13 5 9 5 14 26 20 17
11 | 6 2 8 1 3 3 3 6 9 2 6 2 23 5 3 21
12 | 3 2 11 3 2 1 3 4 8 4 25 4 4 11 3 21
13 | 3 1 10 4 2 3 7 3 3 12 1 3 0 6 7 15
14 | 2 3 4 1 3 8 2 4 10 6 0 2 6 8 2 40
15 | 3 1 11 3 9 3 2 8 6 4 7 3 12 6 4 7
16 | 6 4 11 5 4 4 15 6 8 6 6 2 1 3 13 13
17 | 0 1 6 4 4 5 8 3 2 4 11 6 0 4 3 10
18 | 2 1 3 5 4 3 3 6 11 6 6 1 8 7 4 10
19 | 3 5 5 2 4 8 8 2 3 9 10 3 25 13 14 7
20 | 6 15 13 4 6 6 3 12 9 42 8 14 18 52 15 5
21 | 3 11 14 7 4 5 6 9 8 6 7 31 39 48 16 4
22 | 2 13 4 4 4 8 8 15 7 2 16 19 65 46 22 7
23 | 5 12 6 5 6 15 15 4 8 9 23 17 66 78 16 15
- ----+---------------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
| Dec 1999
| Dec 1999
| 17 18 19 20 21 22 23 24 25 26 27 28 29
- ----+---------------------------------------------------
0h| 4 0 6 10 18 11 * * 3 0 3 8 0
1 | 0 21 14 32 9 24 * * 0 1 0 1 3
2 | 16 13 19 11 18 30 * * 6 2 1 11 0
3 | 7 7 20 20 12 19 * * 10 11 4 1 9
4 | 18 18 18 23 28 17 * * 11 26 1 0 11
5 | 9 15 10 16 5 14 * * 11 16 1 14 18
6 | 25 28 * 27 9 * * * 27 15 1 7 7
7 | 26 31 * 47 12 * * * 26 30 3 7 3
8 | 88 55 * 29 * * * * 1 21 0 1 10
9 | 6 36 * 14 * * * * 11 14 2 * 2
10 | * 65 12 16 16 * * * 19 1 1 * *
11 | * 17 10 23 32 * * * 26 6 11 * *
12 | * 26 6 12 13 * * * 9 17 30 * *
13 | 33 28 19 12 13 * * * 21 5 32 * *
14 | 1 20 6 18 6 6 * * 19 10 29 * *
15 | 4 * 19 11 8 20 * * 17 1 77 * -
16 | 3 * 6 7 20 15 * 14 3 2 32 * -
17 | 3 * 7 15 10 * * 1 15 0 * * -
18 | 5 * 19 22 7 * * 0 7 0 * 4 -
19 | 20 * 11 9 17 * * 0 7 0 * 15 -
20 | 0 * 9 7 9 * * 1 31 15 * 6 -
21 | 10 * 14 17 26 * * 3 27 6 51 0 -
22 | 2 * 9 11 15 * * 10 8 0 29 0 -
23 | 8 7 7 6 4 * * 2 6 1 106 0 -
- ----+---------------------------------------------------
| 17 18 19 20 21 22 23 24 25 26 27 28 29
| Dec 1999
Note:
. * local interference or propagation opening
Enric Fraile Algeciras
- ---------------------------------------------------------------------------
Observer: Michael Boschat
Location: Halifax, Canada (63 36'W, 44 39'N, 58 meters above sea level)
Listening Frequency: 83.25 MHz
Receiver: Icom R-10
Antenna : resonant dipole
Antenna Direction: Horizontally polarized with lobes in E-W plane, elev 0 deg
Filter : high-Q (Q at least 300) bandpass filter between antenna & receiver.
Listening Mode: CW
Recording method: listening by ear
December 1999
Number of meteors heard in one hour interval
| UT
Dec| 09h 10 11 12 13 14 15 16 17 18 19 20 00 01 02 03 04 05 06
- ---+--------------------------------------------------------------------------
-
1 | - - - 9 2 3 7 - - - - -
2 | 4 4 - 5 3 2 9 7 8 - - -
3 | - - - - - - - - - - - -
4 | - - - - - - - - - - - -
5 | - - - - - - - - - - - -
6 | - - - - - - - - - - - -
7 | - - - - - - 3 4 - - - -
8 | - - - - - - - - - - - -
9 | - - - 6 4 1 3 - - - - -
10 | - - - 1 3 4 4 2 - - - -
11 | - - - - 10 7 6 5 - - - - 1 1 3 4 - - -
12 | - - - 6 24 16 11 5 6 10 - - 16 34 35 47 - -
13 | - - 38 69 34 41 23 15 8 - - - - 26 73 100 102 98 112
14 | - - - 98 102 59 31 - - - - - - 26 60 51 34 - -
15 | - - - 37 26 22 12 - - - - -
16 | - - - - - - 7 - - - - -
17 | - - - 31 16 20 16 - - - - -
18 | - - - 19 - - 12 - - - - -
19 | - - - 3 9 19 18 - 5 6 - -
20 | - - - 25 15 12 14 - 11 - - -
21 | - - - 29 32 25 19 - - - - -
22 | - - 9 14 8 8 16 - - 22 10 6 - - 7 3 - - -
23 | - - 12 20 17 13 22 12 - - - -
24 | - - 13 33 14 10 28 - - - - -
25 | - - 6 13 23 7 - 11 12 - - -
26 | - 4 6 7 15 - - - - - - -
27 | - - - - 2 7 - - - - - -
- ---+--------------------------------------------------------------------------
-
Dec| 09h 10 11 12 13 14 15 16 17 18 19 20 00 01 02 03 04 05 06
| UT
Notes:
. no corrections for radiant position made to the counts.
. ( - ) means no observations made.
. * = Interference
Mike Boschat
- ---------------------------------------------------------------------
Observer: Maurice De Meyere
Location: Deurle, Belgium (3 37' E, 51 00' N)
Frequency: 66.51 MHz
Transmitter locations (all stations of more than 10 kW):
66.35 MHz, Klaipeda, Lithuania 12 kW, 05h00-22h00
66.47 Viesintos Lithuania 12 05h00-22h00
66.62 Budapest Hungary 100 24hrs
66.68 Valmiera Latvia 20 04h30-22h00
Antenna: crossed Yagi (x form), 4 elements, astronomical azimuth 270 deg
(= E), elevation 27 deg.
Antenna amplifier: 25 dB max level 90 dBmuV
Receiver: commercial, Progresson 447A, TESLA (Bratislava)
The receiver was calibrated with a Marconi TF2008 signal
generator. Sensitivity: 5 muV (modulation frequency
1000 Hz, frequency sweep 38 kHz) at (S+N)/N = 20 dB.
SWR of antenna alone at 66.5 MHz: 1.4/1 (good to very good),
measured with MFJ/259P SWR analyzer (HF-VHF 1.8 MHz to 170 MHz)
on Sep 28, 1998.
Observing method: automated setup, 150 samples/second, 8 bit resolution.
[Time and details of all individual meteor reflections are stored
on file in the University of Ghent format (Prometeos), and are
available for further analysis. Reduction software for DOS and
Windows available].
December 1999
Raw counts of reflections with a duration of at least 0.027 s
during one hour interval starting at UT:
Dec | UT
1999 | 21 22 23 00 01 02 03 04 05 06 07
- ------+------------------------------------------------------
1- 2 | 80 103 90 124 112 126 128 133 ? 132 62
2- 3 | 60 69 105 89 ? 108 145 153 118 149 138
3- 4 | 41 69 73 117 106 147 145 138 147 108 96
4- 5 | 71 67 66 77 107 95 143 141 153 121 ?
5- 6 | 100 79 118 ? 106 85 133 118 131 139 103
6- 7 | 63 101 79 127 116 116 137 150 106 137 86
7- 8 | 44 84 108 112 113 105 139 167? 137 122 79
8- 9 | 56 143 115 108 99 92 128 146 139 136 94
9-10 | 55 142 105 115 135 140 153 161 156 ? ?
10-11 | 91 103 123 101 138 84 147 143 166 130 -
11-12 | 131 136 136 130 110 124 126 152 129 145 149
12-13 | 131 144 222 168 147 144 139 149 133 225 179
13-14 | 242 238 243 217 171 178 166 228 256 430 401
14-15 | 313 403 266 208 225 184 143 177 217 329 259
15-16 | 102 90 125 110 91 115 142 178 132 146 128
16-17 | 56 65 61 136 106 116 165 146 ? 116 64
17-18 | 75 106 80 96 125 111 171 158 125 126 72
18-19 | 50 86 79 103 85 103 98 164 153 142 96
19-20 | 48 59 108 ? 101 88 132 ? ? 164? ?
20-21 | 60 68 88 90 102 97 145 147 92 139 187?
21-22 | 141 121 72 118 92 104 131 148 157 161 131
22-23 | 99 109 85 114 104 102 124 142 138 129 99
23-24 | 60 72 59 90 87 94 147 102 106 99 66
24-25 |
25-26 | 44 70 65 77 75 99 78 98 84 86 50
26-27 | 47 29 41 76 91 91 108 125 131 113 62
27-28 | 37 73 73 75 65 ? 100 126 122 96 ?
28-29 | 48 48 39 91 78 67 115 100 78 61 53
29-30 | 38 58 58 62 70 77 125 106 93 121 94
30-31 | 33 40 50 75 52 84 127 126 133 115 100
31- 1 | 92? ? ? 110 98 105 106 118 126 120 61
- ------+------------------------------------------------------
1999 | 21 22 23 00 01 02 03 04 05 06 07
Dec | UT
Raw counts of reflections with a duration of at least 1.000 s
during one hour interval starting at UT:
Dec | UT
1999 | 21h 22 23 00 01 02 03 04 05 06 07
- ------+------------------------------------------------------
1- 2 | 12 13 16 21 11 18 24 22 ? 18 3
2- 3 | 9 10 9 9 ? 25* 32* 25 17 31* 29*
3- 4 | 5 6 11 18 10 28 20 14 13 12 23*
4- 5 | 13 5 5 13 23* 17 15 20 21 13 29
5- 6 | 19 10 18 29? 21 15 15 17 29* 18 9
6- 7 | 6 14 18* 17 18 17 12 26 17 16 12
7- 8 | 6 14 17 10 11 19 15 30 17 22 16*
8- 9 | 7 19 19 18 9 12 25 18 12 22 8
9-10 | 5 17 12 16 30* 32* 24 17 28 31? ?
10-11 | 14 13 22 17 37* 8 22 11 13 19 -
11-12 | 27* 25 21 19 10 16 15 11 18 23 16
12-13 | 22 27 43 34* 21 22 20 26 18 48* 38*
13-14 | 40 53* 56* 64* 30 32 36* 31 52* 106* 132*
14-15 | 71* 109* 68* 56* 35 37* 20 28 36 82* 74*
15-16 | 17 20* 14 20 13 17 18 22 16 31* 18
16-17 | 10 7 5 23 17 15 14 20 29 16 4
17-18 | 15 17 18* 21* 24 11 20 24 16 14 9
18-19 | 8 11 19* 9 8 6 11 32 18 19 14
19-20 | 4 6 23* 11 11 11 9 35 28 18 ?
20-21 | 10 8 21* 19* 24* 14 22 17 7 21 51*
21-22 | 28 23 15* 32* 14 13 24 17 39* 33* 36*
22-23 | 28* 19 13 25* 22* 16 17 24 23 23 19
23-24 | 12 18* 9 11 11 12 16 9 15 10 3
24-25 |
25-26 | 4 10 6 8 10 13 14 8 15 8 3
26-27 | 10* 6* 3 10 15 14 14 12 19 14 6
27-28 | 6 8 11 10 9 23? 6 15 22 10 22?
28-29 | 6 5 0 25* 9 11 12 21* 7 6 5
29-30 | 5 7 3 12 8 10 17 14 3 17 6
30-31 | 1 7 3 10 6 11 14 15 12 16 25*
31- 1 | 9 11 17 10 15 14 15 11 11 19 8
- ------+------------------------------------------------------
1999 | 21h 22 23 00 01 02 03 04 05 06 07
Dec | UT
Notes:
. ? probably affected by sporadic-E, tropo, direct reception.
. * warning for relative high number of long duration reflections,
an indication for potential stream activity.
. local time = UT + 1 hour)
Maurice De Meyere
- ----------------------------------------------------------------------
Location: Astronomical Observatory, University of Ghent, Belgium
(ED50 coordinates: 3 42' 32" E, 51 01' 25" N)
Antenna (2x): 4 elements horizontal Yagi, pointed East, elevation= 20 deg
Antenna amplifier: 10 dB gain
narrow band resonance lambda/4 antenna filter
Frequency: (1)=66.29 MHz (signal) and (2)=65.3 MHz (interference control)
Receiver (2x): modified commercial FM receiver
Data acquisition: 12 bits PC-based A/D convertor, 250 Hz sampling rate
Interference rejection:
dual setup: receiver (1) tuned at distant transmitter, receiver (2)
tuned at empty frequency. Anti-coincidence measurement rejects
registration of broadbanded spurious signals (lightning, computers,
ignition motors, etc).
Further information:
see WWW page (additional info + observational data)
http://allserv.rug.acdot be/~hdejongh/astro/meteor/meteor.html
Data format:
results are shown as total reflection time, expressed as
a percentage. The actual number shows 10 times this value.
When no figure is shown, the equipment was either out of service,
or results could have been affected by interference, sporadic-E.
-------------------------------------------------------------
| Dec 1999 | 10x % reflec. time | horiz: day | vert: time UT|
- ----------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
- ---+------------------------------------------------------------
0 | 44 35 27 38 23 70 49 48 58 53 46 73 82 266 268
1 | 47 68 57 60 99 51 47 45 78 85 74 85 103 224 246
2 | 62 38 58 106 45 66 51 80 44 104 66 70 91 185 138
3 | 60 63 80 103 71 89 76 70 68 57 67 84 106 205 121
4 | 80 78 144 87 72 117 110 71 59 77 50 99 93 264 128
5 | 67 147 113 97 82 88 40 60 76 114 57 110 108 205 100
6 | 70 57 116 78 64 64 80 82 125 90 72 87 174 273 163
7 | 81 47 130 95 50 66 37 65 55 81 72 100 293 147
8 | 41 62 37 52 43 34 34 22 70 69 82 133 218 89
9 | 29 45 40 98 71 75 38 55 19 64 55 120 59 131 96
10 | 40 35 67 90 56 43 27 31 28 64 39 52 39 53 71
11 | 34 27 56 68 55 47 21 35 22 31 63 35 44 57 42
12 | 16 20 82 49 27 33 37 20 31 20 53 33 66 17 30
13 | 42 60 27 60 33 17 27 12 35 19 30 29 28 13 27
14 | 13 16 39 34 28 24 17 12 12 19 27 36 19 21 24
15 | 15 15 19 21 29 15 14 13 7 27 20 25 23 69 56
16 | 17 23 52 22 14 12 11 17 11 21 20 28 48 111 36
17 | 19 33 23 21 34 35 14 39 19 26 32 62 105 131 33
18 | 43 32 25 38 29 27 21 25 28 39 38 47 98 203 49
19 | 66 30 32 33 35 37 37 34 27 36 42 36 188 226 51
20 | 55 44 45 42 45 63 50 46 35 48 63 46 214 372 36
21 | 60 45 73 50 67 74 52 47 50 71 92 69 318 436 59
22 | 74 45 49 48 42 51 61 74 83 81 79 106 363 449 52
23 | 37 34 42 31 28 55 43 66 44 47 73 96 273 288 44
- ---+------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
--------------------------------------------------------------
| Dec 1999 | 10x % reflec. time | horiz: day | vert: time UT |
- --------------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
- ---+----------------------------------------------------------------
0 | 53 44 62 37 26 29 33 31 27 52 36 33 22 41 16 20
1 | 57 50 72 46 32 34 37 44 45 25 40 54 29 36 38 45
2 | 78 59 83 58 55 49 56 55 69 49 50 54 40 33 45 42
3 | 57 71 78 65 41 43 62 69 75 50 60 48 34 73 37 35
4 | 108 82 111 99 85 72 86 69 110 71 66 80 73 55 37 55
5 | 81 83 84 76 83 62 71 58 76 59 53 64 49 54 41 50
6 | 70 80 84 59 56 46 59 54 65 49 58 65 54 35 36 55
7 | 64 59 91 69 75 69 67 45 52 114 31 92 145 30 41 58
8 | 55 45 52 57 59 68 45 50 123 88 31 88 54 48 70 60
9 | 25 128 66 76 72 78 68 48 64 132 42 55 72 43 41 37
10 | 19 89 52 49 51 100 41 48 39 80 37 41 36 35 55 59
11 | 42 50 58 60 33 47 50 37 54 95 42 66 78 57 35 56
12 | 63 47 38 50 25 16 35 26 43 71 53 51 36 24 25 44
13 | 37 21 26 52 23 27 22 26 30 19 19 49 23 31 9 41
14 | 24 22 23 27 32 19 11 29 43 37 36 23 43 41 19 22
15 | 14 20 20 9 13 49 13 29 22 16 18 28 17 9 8 20
16 | 24 12 15 13 12 24 25 18 13 19 13 30 18 14 15 17
17 | 16 19 13 14 10 16 56 22 14 10 18 37 15 11 14 14
18 | 25 16 12 11 19 23 29 20 23 22 14 16 15 20 27 34
19 | 22 33 22 29 30 17 56 22 18 24 16 16 19 13 36 18
20 | 28 30 27 22 25 39 49 33 23 29 36 33 22 17 35 28
21 | 41 55 35 45 41 33 62 42 23 40 38 33 41 28 21 24
22 | 41 47 42 40 32 38 58 38 31 60 48 48 24 20 25 27
23 | 31 41 60 50 43 30 56 32 35 17 36 25 21 24 34 32
- ---+----------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Notes:
. strong Geminids activity on December 14-15
Pierre De Groote
- ---------------------------------------------------------------------------
Observer: R.B. Minton
Location: Raton, NM (104 26' W, 36 54' N, 2000 m above sea level)
Frequency: 92.9 MHz
Transmitters: KTZA FM 100 kW, Artesia NM, dist 444 km, geogr azim 178 deg
KSPZ FM 53 kW, Color. Springs, dist 217 km, geogr azim 352 deg
KYBR FM ? kW, Espanola NM, dist 180 km, geogr azim 236 deg
???? FM ? kW, Juarez Mexico, dist 579 km, geogr azim 198 deg
KWFM FM 90 kW, Tucson AZ, dist 798 km, geogr azim 233 deg
Antenna: folded dipole, on 6.3 m high mast, oriented N-S
Receiver: Subaru 12 V DC car radio with digital tuning
Observing method: conditioned audio input in the game port of an IBM 386 SX-50
PC, 128 samples/second, DOS/Basic software, automatic
Total hourly counts
November 1999
Nov| UT
1999| 0h 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
- ----+------------------------------------------------------------------------
1 | 11 27 34 34 30 14 18 15 20 15 11 15 15 21 17 28 40 38 27 21 21 19 21 32
2 | 27 23 40 33 28 28 14 13 21 9 16 23 24 22 19 19 51 31 31 33 26 30 27 41
3 | 34 36 29 25 30 26 24 24 18 19 26 32 20 19 22 36 50 47 35 31 30 39 37 29
4 | 29 24 33 28 42 38 22 30 22 23 30 37 27 36 32 35 46 36 25 27 32 18 27 38
5 | 37 45 45 40 49 29 24 23 36 25 34 40 29 31 31 39 44 29 46 44 37 37 39 26
6 | 35 29 44 42 46 37 26 22 29 23 19 22 32 23 27 25 41 50 51 36 24 25 25 36
7 | 28 25 28 28 34 27 21 20 20 28 18 30 19 15 25 36 42 21 33 25 26 25 26 23
8 | 24 32 33 31 47 34 24 20 5 0 6 22 24 28 19 26 26 20 27 34 16 28 12 33
9 | 34 24 27 30 38 34 22 17 14 23 27 25 23 20 28 29 47 38 36 19 20 22 24 31
10 | 19 33 26 34 41 29 25 19 30 24 16 26 33 33 19 11 26 39 33 21 22 20 20 6
11 | 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 29
12 | 8 9 5 7 9 10 3 0 9 3 2 6 7 6 8 14 18 13 10 9 7 10 9 7
13 | 8 8 11 11 12 8 5 1 9 3 4 6 5 4 9 9 14 9 7 11 6 11 6 20
14 | 9 9 5 12 14 10 5 3 5 4 6 6 6 5 5 13 13 11 10 9 6 5 9 15
15 | 8 9 6 5 10 5 8 4 5 2 3 5 2 8 6 8 20 11 8 5 5 12 6 15
16 | 5 12 14 7 15 9 11 5 6 8 7 1 8 11 5 16 23 13 16 8 12 6 6 17
17 | 6 9 6 8 13 13 2 5 13 6 13 9 13 6 9 13 25 14 14 9 10 7 11 15
18 | 5 15 9 9 11 8 3 9 5 12 26 18 10 14 18 23 30 26 21 7 3 8 6 11
19 | 8 7 8 16 10 13 4 4 14 11 11 7 4 4 3 9 17 16 20 9 5 6 7 8
20 | 3 3 5 6 4 7 7 2 11 7 2 6 2 9 6 14 16 16 8 3 5 6 6 6
21 | 7 5 2 4 1 3 1 2 2 7 6 1 0 0 2 3 11 6 9 0 0 4 2 5
22 | 6 3 7 7 8 5 2 3 2 5 2 1 2 2 7 7 6 8 4 5 8 7 6 5
23 | 4 4 6 8 5 4 10 3 4 5 1 7 6 5 5 6 4 2 14 1 9 7 5 16
24 | 8 4 7 3 4 9 2 3 3 6 3 6 9 4 6 4 18 12 3 8 5 1 8 19
25 | 2 7 6 4 9 10 7 3 2 3 3 2 5 3 2 0 13 5 5 5 0 5 2 2
26 | 3 3 3 4 2 3 0 2 2 1 2 3 0 4 3 4 12 9 5 4 8 2 2 8
27 | 2 2 5 4 3 6 3 3 2 1 5 3 0 2 2 3 11 6 4 4 9 6 2 7
28 | 6 7 5 7 6 6 4 0 6 3 5 3 4 2 1 5 7 7 4 2 7 4 7 16
29 | 8 7 5 6 7 3 3 1 2 5 3 2 2 5 1 5 9 5 33 7 3 5 4 8
30 | 5 3 9 4 7 0 1 1 4 1 2 4 6 6 1 4 8 13 16 9 6 2 1 6
- ----+------------------------------------------------------------------------
1999| 0h 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Nov| UT
Signal duration distribution for the above period
Duration (s) Number
< 0.1 2953
0.1 to 0.3 2254
0.3 to 1 1790
1 to 3 1422
3 to 10 1104
10 to 30 310
> 30 13
Note:
. the numbers are lower since Nov 11 for an unknown reason
R.B. Minton
- ---------------------------------------------------------------------------
Observer: Sadao Okamoto
Location: Damine Meteor Observatory, Japan (137.53 E, 35.07 N)
Transmitter: HAM beacon (JA9YDB) for RMO (50 W CW, 53.7500 MHz) by
JA9BOH Kimio Maegawa. No modulation except for identification.
Antenna: 2 element Cross Yagi 4 dBi aiming to Zenith. Omni-directional
in azimuth and elevation above 15 deg elevation.
Location: Fukui-NCT at Sabae city (136.2 E, 35.9 N)
At present time about 10 observers are listing for
Kimio Maegawa's 53.75 MHz beacon.
Receiver: IC575
Antenna: 2 element Yagi, pointed to the zenith.
Observing method: FFTDSP software, manual count.
Hourly echoes over 10 dB SNR
1999
Nov|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Nov|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
- ---+-------------------------------------------------------------------------
1|23 45 37 52 48 44 45 50 37 23 26 28 23 18 17 13 16 11@21 n n 32 33@38
2|26 39 61 45 30 28 32 35 42 37 21 n n n e@14 10 8 13@13 e 38 44@36
3|30 50 51 53 54 52 43 30 n@18@15 n n 12 n n@13 n@10 n@13 33 39@44
4|40 45 58 51 40 51 51 36 35@21@21 16 12 16 14 e n 11 15 15 25 32 42@28
5|37 34 55 62 38 57 38 37 19 17 20@12 n 7 n n n n 13 16 23 26 n@24
6|35 46 55 52 42 41 44 35 36 n 34@18@20 e e@15 n -- 14 24 25 26 29@40
7|29 48 55 58 53 45 55 55 31 31 25 24 18 18 10 18 17 12 11 11 24 33 34@30
8|30 56 45 51 60 34 52@46 e e n e e e 10 14 n n n@18 17@18 27@42
9|33 53 46 52 38 43 47 e n 26 31 n n n 9 10 13 10 11 12 23 33 53@31
10|46 50 51 50 56 49 58 41 22@16 n n n e n n e e e e 19 36 52@46
11|34 51 53 63 67 54 54 48 43 29 18 20 n n n n@13 @5 n n@33 n 29@21
12|44 46 48 57 56 48 43 48 40 42 41 26 20 23 n n 11 13 n@12 23 n 41@36
13|24 26 51 50 54 49 46 45 29 25 18 12 4 3 5 8 13 9 22 18 18 27 35@43
14|25 46 56 41 56 50 47 42 44@21 n 37 19@30 n 28 13 n n n 17 30 34@33
15|42 46 48 56 60 50 35 42 33@26 n 33 28 19 25 11 19 9 5 15 25 38 39@21
16|36 46 42 37 49 43 39 34 31 17 21 n n 10 n n n n n n n@21 39@25
17|29 50 46 51 56 33 66 53@40 n n n n n n@14 5 13 12 13 26 42 39@26
18|40 48 49 59 36 63 56 64 58 58 86102 19@16 7 11 8 9 12 13 23 38 39@46
19|40 65 81 92 81 55 72@49@45 37 21 19 8 3 11 12 11 17@18 e e 32@24@16
20|32 55 45 57 68 67 53 64@48 n 12 19 22 23 8 @6@11 7 12 14 21 27 55@46
21|41 51 63 48 68 54 59 57@33 n n n n n n n n n@18@16 13 35 50@28
22|37 40 54 61 60 67 51 47 37 n@20@15 14 19 9 11 10 8 11 15 20 26 35@22
23|40 39 43 55 47 51 56 e e n@39 25 18 25 11 12 11 14 9 15 16 26 39@45
24|44 42 39 55 57 55 58 e e e e n 16 24 e e n 4 11 9 n@28 47@33
25|27 48 47 66 50 52 31 42 e@27 31 17@21 e @6 @6 @9 n @9 7 23 34 43@30
26|31 34 59 48 52 49 46 33@21 28 n@21@24@24@12 10 n n@13 7 18 35 39@30
27|34 41 56 49 43 52 56 35@36 n n 14 n n n e n n 14 11 25 42 47@43
28|40 41 59 76 55 59 54 59 41 44 21 23 25 n 23 12 15 10@12 24 20 44 43@26
29|17 54 64 65 61 50 45 28 20@24 n n n n@10 7 14 8 13 15 25 32 42@42
30|47 50 85 66 62 63 53 59 46 29 20 17 13 24 19 11 11 8 9 15 25 34 44@46
- ---+-------------------------------------------------------------------------
Nov|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Nov|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
1999
Hourly echoes over 10 dB SNR
1999
Dec| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Dec| 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
- ---+--------------------------------------------------------------------------
1| 44 51 77 73 58 61 68 53 44 37 17 16 15 27 -- -- 16 10 n 10 22 41 45 --
2| 44 43 66 63 74 58 59 50 45 43 36 40 29@34@15 e e 9 18 9 12 37 45@49
3| 17 22 46 51 46 53 29 41 17 n n n n n n n n 11 15 10 29 51 44@60
4| 54 63 65 73 92 65 71 40 e 30 27 26 22 19 n n e @6 15 13 22 20 32@48
5| 34 59 54 56 62 71 68 61 57 n n@33 30@30 n n e e 8 13 27 33 40@31
6| 30 47 54 80 67 65 55 57 40 39 27 15 5 9 11 e@10 11 13 14 16 30 28@36
7| 43 48 69 92 73 54 41 40 27 n n n n n n 8 5 4 13 12 21 20 32@32
8| 39 52 61 51 56 71 58 53 22 19 19 n n n n n n 11 14 26 22 41 53@54
9| 68 57 69 97 55 67 65 73 51 34 29 25 23 18 14 20 17 11 19 33 21 53 53@48
10| 58 51 58 79 83 71 75 60 n 30 n n n n n n 17 9@10 28 33 49 72@84
11| 54 53 73 86 78 90 82 70 e 46 33 29 n n n n n@12 n@10 33 33 46@39
12| 56 46 82120 91 85 65 78 50 n n n n n n n@13 9 23 30 49 73 86@99
13| 85 48122143104 93 86 85 38 40 33 37@31 33 17 13 15 13 22 27 75 78 96@141
14|130 59151181159118117@84 e e n n n n n n n n@21@35 58 93 97@136
15|168 74165194166123 97 98 83 50@27 n 23 e e e n n n@27 35 52 54@54
16| 57 37 67 71 67 72 53 58 43@38@22@20 n n n n n n n 9 33 39 38@64
17| 49 49 53 58 54 61 63 56 47 37 31 27 30 38 21 15 9 9 16 9 19 29 45@34
18| 32 25 36 36 38 48 62 47 30 41 43 28 21 19 11 16 18 8 9 8 10 29 28@32
19| 38 26 40 47 42 56 45 52 56 24 30 42 35 13@15 -- 9 10 19 15 31 31 31 --
20| 41 44 57 64 67 70 82 61 24 25 n n n n n n @6 6 15 11 25 30 34@34
21| 37 50 48 50 55 57 70 61 45 36 15 11 12 12 13@12 7 10 15 10 17 33 40@32
22| 45 54 62 62 54 50 62 60 50 24@24@12 n n n n n 7 8 11 9 32 27@45
23| 31 40 51 52 58 58 68 69 30 18@15 n n n n n n 7 13 13 17 45 29@24
24| 26 42 37 49 47 48 49 53 37 39 15 23 12 11 11 11 11 7 5 10 20 34 29@28
25| 44 47 49 44 44 50 52 48 35 29 n n n @8 9 e e n @9 12 27 23 49@44
26| 34 41 70 64 48 71 59 54 40 18 17 11 n n n n @6 6 10 14 26 26 35@37
27| 37 52 51 51 57 69 70 64 33 20 n n n n n n @7 11 13 7 14 27 28@36
28| 38 47 40 61 54 58 62 47 57 34 20 n n n n n n 8 10 6 22 37 34 --
29| 42 44 61 43 48 62 62 57 41 21 13 16 14 12 10 6 6 10 12 12 25 24 28@25
30| 31 47 56 39 49 63 53 59 42 31 n n@12 10 23 7 8 18 9 7 19 35 43@45
31| 35 45 45 52 58 56 62 47 55 25 33 28 23 14 n n 5 8 10 14 13 27 39@34
- ---+-----------------------------------------------------------------------
Dec|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Dec|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
1999
Echoes with duration > 5 s
1999
Nov|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Nov|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
- ---+-------------------------------------------------------------------------
1| 1 1 3 4 2 6 5 2 1 1 2 2 1 1 1 2 1 2
2| 4 6 1 1 1 3 2 3 1 3 1 1 2
3| 1 2 4 4 1 4 4 1 1 2 1 1 1 2
4| 1 3 1 1 3 2 3 2 1 2 3 2 1 1 3
5| 3 2 6 6 2 3 6 1 2 1 1 1 2
6| 1 1 8 5 3 3 9 4 1 1 1 1 1 1 4
7| 2 4 3 3 3 4 6 2 3 1 2 1 1 1 1 1 1 1
8| 2 6 2 2 3 2 9 1 2 1 1 3 2
9| 1 3 2 5 3 4 4 2 2 1 1 1 1
10| 3 3 3 2 1 1 2 5 3 1 2 1
11| 1 4 1 7 6 4 8 3 3 2 1 1
12| 1 6 3 2 5 1 2 3 4 1 3 1 1 1 2 1 1
13| 1 3 7 3 1 5 5 2 6 1 1 1 1 1 1 3
14| 4 6 1 9 3 4 2 5 2 1 1 1 1
15| 1 2 3 4 4 2 1 1 2 1 1 2 1 1 1
16| 2 1 4 2 1 4 3 5 2 1 1
17| 2 4 7 4 3 2 3 1
18| 4 4 2 3 7 6 11 22 10 15 14 11 4 1 4 1
19| 3 8 10 16 13 12 20 2 6 3 3 1 1 1 1 1
20| 2 1 4 5 3 7 4 1 3 1 1 1
21| 3 1 2 6 8 4 2 1 2
22| 3 1 6 1 3 8 2 2 1 2 1
23| 1 5 3 3 1 4 3 3 4 1 1 1
24| 1 2 5 2 4 3 1 2 1
25| 1 1 3 1 1 2 1 1 1 1 2
26| 1 1 1 2 2 2 1 1 1
27| 1 2 6 1 2 1 2 3 2
28| 1 2 4 5 1 4 3 3 3 2 2 1 2 2 1 1 3 1
29| 2 3 3 4 3 3 1 2
30| 1 3 3 6 3 1 3 3 1 3 1 2 1 1 1 1
- ---+-------------------------------------------------------------------------
Nov|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Nov|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
1999
Echoes with duration > 5 s
1999
Dec|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Dec|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
- ---+-------------------------------------------------------------------------
1| 2 3 10 5 2 5 6 6 2 2 2 1 1 3 1
2| 4 1 5 6 1 2 3 4 1 2 2 1 1 1 2
3| 2 1 2 6 4 5 6 1 1 2 1
4| 2 6 4 7 4 3 1 3 1 1 2 1 2
5| 3 3 5 9 3 7 9 9 7 3 1 1 2 1 1
6| 3 5 4 8 5 6 5 3 1 3 1 2 1 1 2
7| 1 5 3 8 10 13 7 4 4 1 1 2 1
8| 4 3 7 8 7 7 6 5 3 1 1 2 1 4
9| 3 2 8 11 2 11 6 12 8 1 5 2 5 2 1 3 1 5
10| 8 5 8 10 6 4 11 11 5 1 1 8 10
11| 8 5 10 10 9 6 8 9 4 3 1 2 3 4 4
12| 6 5 6 14 3 6 4 8 5 1 2 1 9
13|14 1 16 17 14 11 5 12 1 4 4 1 3 1 1 1 3 7 9 12 14
14|30 1 28 51 28 21 24 17 3 1 4 12 19 32
15|61 22 57 86 78 43 33 19 18 7 3 1 1 2 5 3 1
16| 6 2 7 7 6 8 5 6 6 1 1 2 3
17| 3 3 5 8 8 5 4 1 6 1 1 1 3 1 1 1 1 1 1
18| 4 4 4 2 5 7 5 2 2 1 1
19| 2 1 1 4 3 4 4 7 7 2 2 3 2 1 1 1 1 1
20| 1 5 4 4 5 10 10 12 3 1 1 1 1
21| 4 7 2 2 7 3 11 4 3 5 1 1 1 3 1 1 2 1
22| 2 5 2 7 3 3 5 3 4 2 1 1 1 1 3
23| 2 3 4 4 5 9 14 7 4 1 2 1 1 1 1
24| 2 4 2 4 3 3 4 6 4 3 2 1 1 1 4 1 2 1
25| 2 3 3 4 5 4 8 3 4 1 1 1 2 2 1
26| 1 1 8 6 5 4 8 4 4 1 1 1 1
27| 3 4 3 4 2 5 11 9 5 1 1 1
28| 4 3 4 2 2 6 8 6 2 2
29| 2 3 4 2 6 7 6 4 1 2 1 3
30| 1 2 4 4 3 4 4 5 6 1 1 1 1 1
31| 1 1 1 2 3 4 4 2 3 2 2 3 1 1 2 1 2
- ---+-------------------------------------------------------------------------
Dec|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Dec|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
1999
Echoes with duration > 20 s
1999
Nov|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Nov|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
- ---+-----------------------------------------------------------------------
18| 1 2 2 3 5 6 6 7 1
19| 1 2 2 3 6 2 7 2 3
Daily rate of long echoes (duration > 20 s)
1999
Nov 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
- --------------------------------------------------------------
Count 2 4 2 1 0 3 0 4 4 1 3 3 1 3 3
Nov 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
- ----------------------------------------------------------------
Count 1 3 33 28 4 3 4 2 2 1 2 0 5 0 3
Dec 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
- ---------------------------------------------------------------
Count 1 1 1 1 5 1 4 6 7 4 3 1 4 7 9
Dec 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
- -------------------------------------------------------------------
Count 5 8 1 2 3 6 4 8 2 5 2 3 4 1 2 3
Notes:
. Leonids outburst was observed on Nov 18, at 02h UT and from 16h UT
to 21h UT
. the peak of Geminids activity was observed on Dec 14, 18h UT.
-: lost counts because of high noise level or machine failure.
@: hourly rate estimated by effective observation time less than 60 min.
n: contamination due to radio noise or interference.
e: contamination due to sporadic E opening.
f: no data available due to TX or RX failure.
LT = local time = JST = UT + 9 hours
Sadao Okamoto
- ---------------------------------------------------------------------------
Observer: Ton Schoenmaker
Location: Roden, Netherlands (06 26' E, 53 08' N)
Frequency: 55.274 MHz
Transmitter: Spanish TV channel E3 (video); transmitters in La Muela (30 kW),
Gamoniteiro (50 kW) and Aitana (60 kW); all stations within
100 Hz of nominal frequency; distance 1650 km
Antenna: 4-element horizontal Yagi, geographical azimuth 105 degrees (ESE),
elevation 15 degrees
Receiver: Yupiteru MVT-9000 in FM mode; sensitivity 0.5 uV at 12 dB S/N
Observing: audio (noise) signal from ear-phone socket was rectified and
recorded with a Servogor stripchart recorder with a chart speed
of 120 mm/hour
In the table below the uncorrected hourly counts for signals stronger than
0.1 uV are given. The activity on 21/22 December may be considered to be
caused by sporadic meteors.
| December 1999
UT | 12 13 14 15 16 21 22
---+----------------------------------------------------
00 | - 162 189 162 50 - 36
01 | - 98 158 73 43 - 50
02 | - 58 97 45 42 - 50
03 | - 69 96 43 33 - 48
04 | - 70 116 57 39 - 40
05 | - 50 103 47 30 - 39
06 | - 59 98 41 - - 53
07 | - 49 106 30 - - 35
08 | - 55 115 20 - - 25
09 | - 53 74 34 - - 30
10 | - 33 54 26 - - 35
11 | - 19 24 18 - - 26
12 | - 12 26 21 - - 21
13 | - 7 23 9 - - 13
14 | - 6 12 10 - - 11
15 | - 3 5 2 - - 9
16 | - 9 15 3 - - 12
17 | - 22 26 7 - - 12
18 | - 62 63 13 - - 9
19 | 99 136 94 25 - - 18
20 | 117 152 124 27 - - 25
21 | 154 166 177 40 - - -
22 | 176 199 197 58 - 35 -
23 | 186 214 195 63 - 54 -
---+----------------------------------------------------
UT | 12 13 14 15 16 21 22
| December 1999
Note:
. The somewhat uncommon geometry described above (receiving antenna pointing
perpendicular to the directions of the transmitter) resulted in a peculiar
observability functions, so the counts are difficult to interpret in terms
of Geminids activity. Apparently the observability function peaks at about
23h UT when the main lobe of the 4-element yagi points to the radiant of
the Geminids.
The highest activity occurred on 13/14 December 1999 with counts of about
4 times the sporadic level. For the midpoint between The Netherlands and
Spain the setting and rising of the radiant occurred at 11h30m and 15h30m
UT respectively.
Ton Schoenmaker
- ---------------------------------------------------------------------------
Observer: Pierre Terrier
Location: Canet, France (3 36'E, 43 41' N)
Frequencies: 102.5 MHz
Transmitter Location: Several, which complicates things!
Antenna: 5-element Yagi FM, horizontal polar.
astronomical azimuth 90 deg (W), elevation 20 deg.
Receiver : FM Tuner Kenwood KT-54 L
Observing method: Electronic interface on LINE output audio signal are fed in
COM1: of Laptop 486.
METEOR v 2.05 processes the signal and records on hard disk the
time of the events.
METEOR parameters: SAMPLING = 120, THRESHOLD = 0.8, DELAY = 30 s
| Dec 1999
UT | 3 4 5 6 7 8 9 10 11 12 13 14 15
---+---------------------------------------------------
0 | 0 2 0 0 0 0 5 0 5 3 5 5 4
1 | 0 1 1 0 0 1 1 3 4 4 3 8 6
2 | 0 0 1 1 0 0 1 3 6 1 4 9 3
3 | 0 2 0 0 0 0 0 0 6 4 8 4 2
4 | 0 1 1 1 1 1 3 2 16 42 9 8 5
5 | 0 2 2 2 2 1 7 8 11 46 20 24 12
6 | 0 5 0 1 2 6 5 5 16 97 32 30 19
7 | 0 1 2 1 3 1 2 7 16 69 22 24 15
8 | 0 1 0 - 2 1 0 3 10 42 10 21 10
9 | 0 3 0 - 1 4 3 4 5 84 7 10 7
10 | 0 0 0 - 3 2 1 5 2 81 8 6 4
11 | 0 0 1 - 3 3 1 10 1 9 4 1 2
12 | 0 1 1 - 0 0 1 0 3 1 1 5 4
13 | 0 0 1 - 0 2 3 9 3 5 6 5 2
14 | 0 0 1 - 5 1 1 3 3 7 2 2 3
15 | 0 0 1 1 12 0 3 3 2 1 5 0 5
16 | 0 0 0 1 0 0 5 7 3 3 3 1 0
17 | 1 2 1 2 0 1 1 4 7 2 5 10 0
18 | 9 1 0 0 1 1 9 5 4 7 15 13 0
19 | 7 0 2 1 1 1 8 5 6 13 11 13 0
20 | 4 1 0 2 1 1 7 6 7 1 11 13 0
21 | 10 0 1 1 5 0 3 5 7 9 6 11 0
22 | 2 0 0 2 2 5 3 3 9 6 6 5 0
23 | 6 3 0 1 0 4 3 2 12 2 4 9 0
---+---------------------------------------------------
UT | 3 4 5 6 7 8 9 10 11 12 13 14 15
| Dec 1999
| Dec 1999
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---+---------------------------------------------------------------
0 | 2 2 3 5 2 2 3 83 6 4 4 6 11 5 7 3
1 | 5 1 1 5 3 5 3 74 2 5 6 2 5 3 4 6
2 | 2 3 5 5 4 2 5 145 2 2 2 5 12 3 4 4
3 | 5 3 4 0 4 5 6 91 7 6 8 7 11 8 6 7
4 | 7 5 9 5 7 5 10 34 6 4 5 7 9 4 9 5
5 | 5 2 7 1 8 5 9 45 6 9 4 6 7 7 8 6
6 | 4 8 10 4 1 10 18 7 11 5 11 7 11 10 11 7
7 | 2 4 9 5 5 5 5 4 5 4 5 3 10 2 4 6
8 | 4 8 3 5 6 13 15 11 12 10 8 3 8 5 14 10
9 | 4 9 5 3 10 2 1 3 6 3 3 0 13 9 12 9
10 | 1 7 1 4 4 8 4 9 6 2 3 0 6 8 13 12
11 | 7 1 1 4 3 2 9 8 10 5 7 0 6 11 11 10
12 | 1 0 1 1 2 3 6 5 7 2 4 0 9 5 13 7
13 | 5 2 4 7 1 2 12 9 8 6 5 0 10 3 6 5
14 | 1 0 2 0 4 1 6 4 8 5 5 0 7 7 5 5
15 | 1 3 2 4 4 8 34 5 4 6 8 0 6 5 13 4
16 | 6 1 3 5 3 9 35 7 1 2 7 0 1 8 10 12
17 | 3 3 1 4 1 6 41 4 4 2 4 0 8 8 4 4
18 | 4 0 2 2 2 3 60 23 3 1 8 0 5 11 8 3
19 | 2 5 0 3 0 20 25 4 2 2 2 0 1 3 7 5
20 | 2 7 2 6 2 22 31 8 9 3 7 0 8 4 8 6
21 | 7 2 4 4 3 4 132 12 2 0 3 0 3 4 17 1
22 | 1 6 3 4 2 5 92 4 5 0 5 0 8 0 5 5
23 | 1 0 3 0 2 2 42 4 3 7 4 0 6 0 1 3
---+---------------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
| Dec 1999
Pierre Terrier
- ---------------------------------------------------------------------------
Observer: Garfield Tsao (BM2EQB)
Location: LonTan Observatory
LonTan, TauYan, Taiwan R.O.C. (121 14'37" E, 24 52'54" N by GPS)
Frequency: 50.0169 MHz USB mode 3 kHz width.
Antenna: Comet made 50MHz Yagi HB 4 element (gain 10.3 dBi)
astronomical azimuth 225 deg (=NE), elevation 7 deg.
Transmitter: MIYAZAKI University Japan, USB mode, 50 W (24 hours),
distance about 1125 km from Lon Tan.
Receiver: Icon PCR-1000 computer controlled all band receiver
Sensitivity: 0.25 uV for 10 dB S/N for USB mode
Observing method: the beacon 860-890 Hz voice signal (by FFTDSP) is
received by a low frequency filter (850 Hz)and fed into
the D/A converter and computer in real time.
Data sampling system: using an 8 bits A/D card to PC/AT and Qbasic program
with 1/8 second sampling interval to store the> 1.0 s reflections.
November 1999: Leonids
1999|00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Nov|16h17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
- ----+-------------------------------------------------------------------------
16 | - - - - - - - - - - - - - - - - - - - - - - - 11
17 |20 19 14 5 21 32 37 28 34 30 26 31 13 8 15 9 9 10 11 5 9 11 9 7
18 | 6 17 9 9 14 30 45 47 56119 112 36 - - - - - - - - - - - -
Notes:
. "E" mark= E layer propagation and E layer sporadic of reflection.
. Nov 17, 9h LT interference by background noise
. long and strong echoes:
Nov 17 11 h 06 m 10 s LT echo > 20 dB
11 h 29 m 10 s LT echo > 25 dB
Nov 18 05 h 40 m 40 s LT echo > 20 dB
06 h 42 m 00 s LT echo dur > 60 s
07 h 08 m 00 s LT echo dur > 120 s
08 h 47 m 40 s LT echo > 20 dB
09 h 44 m 30 s LT echo > 20 dB
10 h 19 m 40 s LT echo dur > 60 s
11 h 13 m 10 s LT echo dur > 240 s
Garfield Tsao
- ---------------------------------------------------------------------------
Observer: Ilkka Yrjola
Location: Finland (26 35' E, 60 54' N)
Frequency: 88.8 MHz ?
Receiver: Salora SRP-22 modified, narrow band FM (B=15 kHz)?
detected signal level >-122 dBm.
FM detection, no pulse noise rejection required.
Antenna: 2-el. Yagi, G=4 dBd to SW, azimuth 45 deg (SW), polarisation H.
Data sampling system: threshold triggering, sampling rate 32 ms.
Computer logs total hourly elapsed reflection time, number of
triggers for the hour, the longest time the signal was
continuously above detection level for the hour.
Data on major showers available in the Compact MS-Soft format.
Software for viewing available from
www.saunalahti.fi/~oh5iy/radio50.zip (754 K).
Geminids 1999
Meteor counts in one hour intervals starting at:
UT | 12 Dec 13 Dec 14 Dec 15 Dec
----+----------------------------------
0h | 319 694 677 776
1 | 295 311 425 503
2 | 333 278 351 374
3 | 698 334 658 467
4 | 398 655 1027 547
5 | 712 721 1105 688
6 | 408 682 1194 617
7 | 451 632 1151 582
8 | 412 480 770 442
9 | 281 398 502 458
10 | 205 397 373 293
11 | 295 332 359 226
12 | 267 ? 334 264
13 | 257 ? 318 310
14 | 184 ? 299 271
15 | 215 353 490 229
16 | 260 440 590 288
17 | 299 636 779 247
18 | 350 794 862 336
19 | 345 898 959 622
20 | 529 982 1078 311
21 | 709 1126 1174 287
22 | 569 1152 1151 325
23 | 569 1182 877 369
----+----------------------------------
UT | 12 Dec 13 Dec 14 Dec 15 Dec
Ursids 1999
Meteor counts in one hour intervals starting at:
UT | 20 Dec 21 Dec 22 Dec 23 Dec
----+----------------------------------
0h | 168 172 199 213
1 | 183 162 259 216
2 | 192 200 199 179
3 | 211 156 165 183
4 | 207 232 216 203
5 | 263 252 271 236
6 | 321 274 293 301
7 | 240 333 276 267
8 | 307 483 278 261
9 | 229 379 336 190
10 | 351 220 290 247
11 | 415 400 304
12 | 287 472 266
13 | 241 619 208
14 | 215 193 159
15 | 151 179 175
16 | 159 150 141
17 | 155 149 155
18 | 141 245 219 155
19 | 190 170 186 160
20 | 197 198 279 174
21 | 168 239 285 235
22 | 189 242 270 225
23 | 183 235 306 177
----+----------------------------------
UT | 20 Dec 21 Dec 22 Dec 23 Dec
. tropo on Dec 22, 11h - 18h UT
Ilkka Yrjola
2. ABOUT THE RMOB
The RMOB is an independent initiative of some workers in the field of radio
meteor scatter observations and data reduction. It started in August 1993 in
order to spread rapidly the Perseid results via E-mail. Since then, it has
appeared monthly, and it has gradually been expanded. In regularly publishing
summaries of observations, potential radio observers are kept up to date of
existing installations, possibilities and limitations of radio meteor
observations. In the long run, there should be sufficient observing stations
to cover the whole globe, allowing to detect stream outbursts which may
remain unnoticed visually.
RMOB contains typically: summaries of recent observations, equipment data,
first results of stream activity by radio methods, relations between radio
and optical meteors, references to other publications in the field of meteor
astronomy and radio scatter techniques, announcements of meetings, short
questions and answers, non-commercial (second hand) sale of radio equipment,
available software.
Contributors are mentioned, and interested persons are asked to contact them
directly.
RMOB can be copied freely in unabridged and unmodified form. Extracts should
indicate the source (Radio Meteor Obs Bulletin, month and year).
If you want to subscribe (or un-subscribe) to the E-mail distribution list,
please send a message to C. Steyaert.
Those not having access to E-mail can obtain a printed copy free of charge
from J. Van Wassenhove (current or back-issues).
3. ANNOUNCEMENTS: French frequency list, COLORGRAMME METEOR
Date: Fri, 17 Dec 1999 08:17:44 +0100
Hi METEOR user,
If you are in Europe and radio-meteor observer see this web address for the
french frequency of the transmitter in France :
http://www.brume.org/radios/
Date: Sun, 19 Dec 1999 12:28:54 +0100
Hi METEOR soft user!
I am happy to announce you the creation a new software, that is going to
help you in the visualization of your data.
COLORGRAMME METEOR is a Windows 95/98 (free) application especially for
meteor observers! For more info, go to:
http://membres.tripod.fr/meteor_astro_elec/us/color.html
Regards,
Pierre TERRIER
4. CONTRIBUTORS / USEFUL ADDRESSES
Enric Fraile Algeciras (EA3BTZ)
C/ Moianes 19-21 Esc. A 6: 1*, E Barcelona
E-mail: EA3BTZ@mx3.redestb.es
http://www.redestb.es/personal/ea3btz (in Spanish)
Michael Boschat
6306 Cork St., Apt.512, Halifax, Nova Scotia, Canada
E-mail: andromed@atm.daldot ca
Maurice De Meyere (ON4NU)
Hullekensstraat 24, B-9831 Deurle, Belgium
tel: +32 (9) 282 35 26
E-mail: mauricedot demeyere@planetinternetdot be
University of Ghent, Astronomical Observatory
Krijgslaan 281(S9), B-9000 Gent, Belgium
E-mail contact: Paul@izar.rug.acdot be, Pierredot deGroote@rug.acdot be
Werfried Kuneth
Ferndorf, Austria
E-mail: kuneth@net4youdot net
http://www.qsldot net/oe8fnk
Alastair McBeath
IMO: International Meteor Organization
12A Prior's Walk, Morpeth, Northumberland, NE61 2RF, England, U.K.
E-mail: vice_president@imodot net
R.B. Minton
Astrometric Observatory
568 North First Street, Raton, NM 87740, USA
tel: +001 (505) 445 7009
Ton Schoenmaker (PA0EFA), Dutch Meteor Society
Meester Homanstraat 8, NL-9301 HP Roden, Netherlands
E-mail: schoenmaker@NFRAdot nl
Chris Steyaert, VVS
Kruisven 66, B-2400 Mol, Belgium
tel: +32 (14) 31 51 04
E-mail: steyaert@vvsdot be
Compuserve: 72650,3513
Sadao Okamoto
E-mail: okamoto@jim.sugiyama-u.ac.jp
Pierre Terrier
Canet (close to Montpellier), France
E-mail: pierre.terrier@wanadoo.fr
http://members.tripod.com/~astro_electronic/index.html
Garfield Tsao (BM2EQB)
LonTan Observatory, LonTan, TauYan, Taiwan
E-mail: tsao5916@ms17.hinetdot net
http://www.geocities.com/Eureka/Office/1528 (in Chinese)
Jeroen Van Wassenhove, VVS
's Gravenstraat 66, B-9810 Nazareth, Belgium
tel: +32 (9) 385 61 09
E-mail: 100101.734@compuserve.com
Ilkka Yrjola
Jukolantie 16, FIN-45740 Kuusankoski, Finland
E-mail home: oh5iy@sci.fi
http://www.sci.fi/~oh5iy/
Call: OH5IY, packet radio: OH5IY@OH5RBG.#KVL.FIN.EU
- --
Christian Steyaert (RMOB9912) 8 January 2000
- --
Radio Meteor Observation Bulletin No. 77 January 2000
1. FORWARD SCATTER METEOR OBSERVATIONS
Observer: Enric Fraile Algeciras
Location: Paseo Bonanova, 8 Barcelona (02 07'E, 41 24' N)
Frequency: 48.24715 MHz.
Transmitter Location: still working to identify, possibly South German C2,
100 kW, horizontal polarisation)
Antenna: 6-element Yagi 617-6B, 14 dBd gain.
astronomical azimuth 215 deg (=NE), elevation 0 deg.
Antenna: Six element Yagi 617-6B, 14 dBi gain, horizontal polariz.
Azimuth 200 deg (NE), elevation 20 deg
Receiver: home made converter 20 dB gain, 1 dB noise and Kenwood TS-830S.
10 dB attenuator in the receiver to reduce direct reception
Sensitivity: 0.25 uV for 10 dB S/N
Observing method: the audio signal of the video carrier is received using
a narrow CW filter (500 Hz) and fed into the PC in real time.
Data sampling system: using a super 14 bits A/D card to PC/XT
and "Data Capture" software with 1 second/18 sampling interval
to store all the > 0.5 s reflections.
| Dec 1999
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
- ----+---------------------------------------------------------------
0h| 2 1 9 7 4 2 9 6 8 7 2 4 10 31 74 5
1 | 1 6 10 3 11 7 6 3 10 2 10 3 4 25 53 3
2 | 3 7 6 4 4 3 7 4 9 2 5 5 3 10 44 17
3 | 3 3 3 7 7 6 4 6 10 10 4 8 2 4 18 26
4 | 5 1 4 5 2 13 2 3 7 6 19 14 12 4 2 24
5 | 5 3 12 3 17 9 5 10 9 17 14 20 26 45 18 7
6 | 1 2 14 8 10 6 11 13 16 11 15 26 40 47 32 6
7 | 2 2 7 5 4 6 17 5 9 12 11 13 38 26 31 19
8 | 2 2 30 10 1 12 7 11 11 26 7 21 22 45 38 7
9 | 2 2 2 10 1 7 6 10 9 15 33 7 14 28 26 21
10 | 1 2 9 3 0 6 7 5 13 5 9 5 14 26 20 17
11 | 6 2 8 1 3 3 3 6 9 2 6 2 23 5 3 21
12 | 3 2 11 3 2 1 3 4 8 4 25 4 4 11 3 21
13 | 3 1 10 4 2 3 7 3 3 12 1 3 0 6 7 15
14 | 2 3 4 1 3 8 2 4 10 6 0 2 6 8 2 40
15 | 3 1 11 3 9 3 2 8 6 4 7 3 12 6 4 7
16 | 6 4 11 5 4 4 15 6 8 6 6 2 1 3 13 13
17 | 0 1 6 4 4 5 8 3 2 4 11 6 0 4 3 10
18 | 2 1 3 5 4 3 3 6 11 6 6 1 8 7 4 10
19 | 3 5 5 2 4 8 8 2 3 9 10 3 25 13 14 7
20 | 6 15 13 4 6 6 3 12 9 42 8 14 18 52 15 5
21 | 3 11 14 7 4 5 6 9 8 6 7 31 39 48 16 4
22 | 2 13 4 4 4 8 8 15 7 2 16 19 65 46 22 7
23 | 5 12 6 5 6 15 15 4 8 9 23 17 66 78 16 15
- ----+---------------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
| Dec 1999
| Dec 1999
| 17 18 19 20 21 22 23 24 25 26 27 28 29
- ----+---------------------------------------------------
0h| 4 0 6 10 18 11 * * 3 0 3 8 0
1 | 0 21 14 32 9 24 * * 0 1 0 1 3
2 | 16 13 19 11 18 30 * * 6 2 1 11 0
3 | 7 7 20 20 12 19 * * 10 11 4 1 9
4 | 18 18 18 23 28 17 * * 11 26 1 0 11
5 | 9 15 10 16 5 14 * * 11 16 1 14 18
6 | 25 28 * 27 9 * * * 27 15 1 7 7
7 | 26 31 * 47 12 * * * 26 30 3 7 3
8 | 88 55 * 29 * * * * 1 21 0 1 10
9 | 6 36 * 14 * * * * 11 14 2 * 2
10 | * 65 12 16 16 * * * 19 1 1 * *
11 | * 17 10 23 32 * * * 26 6 11 * *
12 | * 26 6 12 13 * * * 9 17 30 * *
13 | 33 28 19 12 13 * * * 21 5 32 * *
14 | 1 20 6 18 6 6 * * 19 10 29 * *
15 | 4 * 19 11 8 20 * * 17 1 77 * -
16 | 3 * 6 7 20 15 * 14 3 2 32 * -
17 | 3 * 7 15 10 * * 1 15 0 * * -
18 | 5 * 19 22 7 * * 0 7 0 * 4 -
19 | 20 * 11 9 17 * * 0 7 0 * 15 -
20 | 0 * 9 7 9 * * 1 31 15 * 6 -
21 | 10 * 14 17 26 * * 3 27 6 51 0 -
22 | 2 * 9 11 15 * * 10 8 0 29 0 -
23 | 8 7 7 6 4 * * 2 6 1 106 0 -
- ----+---------------------------------------------------
| 17 18 19 20 21 22 23 24 25 26 27 28 29
| Dec 1999
Note:
. * local interference or propagation opening
Enric Fraile Algeciras
- ---------------------------------------------------------------------------
Observer: Michael Boschat
Location: Halifax, Canada (63 36'W, 44 39'N, 58 meters above sea level)
Listening Frequency: 83.25 MHz
Receiver: Icom R-10
Antenna : resonant dipole
Antenna Direction: Horizontally polarized with lobes in E-W plane, elev 0 deg
Filter : high-Q (Q at least 300) bandpass filter between antenna & receiver.
Listening Mode: CW
Recording method: listening by ear
December 1999
Number of meteors heard in one hour interval
| UT
Dec| 09h 10 11 12 13 14 15 16 17 18 19 20 00 01 02 03 04 05 06
- ---+--------------------------------------------------------------------------
-
1 | - - - 9 2 3 7 - - - - -
2 | 4 4 - 5 3 2 9 7 8 - - -
3 | - - - - - - - - - - - -
4 | - - - - - - - - - - - -
5 | - - - - - - - - - - - -
6 | - - - - - - - - - - - -
7 | - - - - - - 3 4 - - - -
8 | - - - - - - - - - - - -
9 | - - - 6 4 1 3 - - - - -
10 | - - - 1 3 4 4 2 - - - -
11 | - - - - 10 7 6 5 - - - - 1 1 3 4 - - -
12 | - - - 6 24 16 11 5 6 10 - - 16 34 35 47 - -
13 | - - 38 69 34 41 23 15 8 - - - - 26 73 100 102 98 112
14 | - - - 98 102 59 31 - - - - - - 26 60 51 34 - -
15 | - - - 37 26 22 12 - - - - -
16 | - - - - - - 7 - - - - -
17 | - - - 31 16 20 16 - - - - -
18 | - - - 19 - - 12 - - - - -
19 | - - - 3 9 19 18 - 5 6 - -
20 | - - - 25 15 12 14 - 11 - - -
21 | - - - 29 32 25 19 - - - - -
22 | - - 9 14 8 8 16 - - 22 10 6 - - 7 3 - - -
23 | - - 12 20 17 13 22 12 - - - -
24 | - - 13 33 14 10 28 - - - - -
25 | - - 6 13 23 7 - 11 12 - - -
26 | - 4 6 7 15 - - - - - - -
27 | - - - - 2 7 - - - - - -
- ---+--------------------------------------------------------------------------
-
Dec| 09h 10 11 12 13 14 15 16 17 18 19 20 00 01 02 03 04 05 06
| UT
Notes:
. no corrections for radiant position made to the counts.
. ( - ) means no observations made.
. * = Interference
Mike Boschat
- ---------------------------------------------------------------------
Observer: Maurice De Meyere
Location: Deurle, Belgium (3 37' E, 51 00' N)
Frequency: 66.51 MHz
Transmitter locations (all stations of more than 10 kW):
66.35 MHz, Klaipeda, Lithuania 12 kW, 05h00-22h00
66.47 Viesintos Lithuania 12 05h00-22h00
66.62 Budapest Hungary 100 24hrs
66.68 Valmiera Latvia 20 04h30-22h00
Antenna: crossed Yagi (x form), 4 elements, astronomical azimuth 270 deg
(= E), elevation 27 deg.
Antenna amplifier: 25 dB max level 90 dBmuV
Receiver: commercial, Progresson 447A, TESLA (Bratislava)
The receiver was calibrated with a Marconi TF2008 signal
generator. Sensitivity: 5 muV (modulation frequency
1000 Hz, frequency sweep 38 kHz) at (S+N)/N = 20 dB.
SWR of antenna alone at 66.5 MHz: 1.4/1 (good to very good),
measured with MFJ/259P SWR analyzer (HF-VHF 1.8 MHz to 170 MHz)
on Sep 28, 1998.
Observing method: automated setup, 150 samples/second, 8 bit resolution.
[Time and details of all individual meteor reflections are stored
on file in the University of Ghent format (Prometeos), and are
available for further analysis. Reduction software for DOS and
Windows available].
December 1999
Raw counts of reflections with a duration of at least 0.027 s
during one hour interval starting at UT:
Dec | UT
1999 | 21 22 23 00 01 02 03 04 05 06 07
- ------+------------------------------------------------------
1- 2 | 80 103 90 124 112 126 128 133 ? 132 62
2- 3 | 60 69 105 89 ? 108 145 153 118 149 138
3- 4 | 41 69 73 117 106 147 145 138 147 108 96
4- 5 | 71 67 66 77 107 95 143 141 153 121 ?
5- 6 | 100 79 118 ? 106 85 133 118 131 139 103
6- 7 | 63 101 79 127 116 116 137 150 106 137 86
7- 8 | 44 84 108 112 113 105 139 167? 137 122 79
8- 9 | 56 143 115 108 99 92 128 146 139 136 94
9-10 | 55 142 105 115 135 140 153 161 156 ? ?
10-11 | 91 103 123 101 138 84 147 143 166 130 -
11-12 | 131 136 136 130 110 124 126 152 129 145 149
12-13 | 131 144 222 168 147 144 139 149 133 225 179
13-14 | 242 238 243 217 171 178 166 228 256 430 401
14-15 | 313 403 266 208 225 184 143 177 217 329 259
15-16 | 102 90 125 110 91 115 142 178 132 146 128
16-17 | 56 65 61 136 106 116 165 146 ? 116 64
17-18 | 75 106 80 96 125 111 171 158 125 126 72
18-19 | 50 86 79 103 85 103 98 164 153 142 96
19-20 | 48 59 108 ? 101 88 132 ? ? 164? ?
20-21 | 60 68 88 90 102 97 145 147 92 139 187?
21-22 | 141 121 72 118 92 104 131 148 157 161 131
22-23 | 99 109 85 114 104 102 124 142 138 129 99
23-24 | 60 72 59 90 87 94 147 102 106 99 66
24-25 |
25-26 | 44 70 65 77 75 99 78 98 84 86 50
26-27 | 47 29 41 76 91 91 108 125 131 113 62
27-28 | 37 73 73 75 65 ? 100 126 122 96 ?
28-29 | 48 48 39 91 78 67 115 100 78 61 53
29-30 | 38 58 58 62 70 77 125 106 93 121 94
30-31 | 33 40 50 75 52 84 127 126 133 115 100
31- 1 | 92? ? ? 110 98 105 106 118 126 120 61
- ------+------------------------------------------------------
1999 | 21 22 23 00 01 02 03 04 05 06 07
Dec | UT
Raw counts of reflections with a duration of at least 1.000 s
during one hour interval starting at UT:
Dec | UT
1999 | 21h 22 23 00 01 02 03 04 05 06 07
- ------+------------------------------------------------------
1- 2 | 12 13 16 21 11 18 24 22 ? 18 3
2- 3 | 9 10 9 9 ? 25* 32* 25 17 31* 29*
3- 4 | 5 6 11 18 10 28 20 14 13 12 23*
4- 5 | 13 5 5 13 23* 17 15 20 21 13 29
5- 6 | 19 10 18 29? 21 15 15 17 29* 18 9
6- 7 | 6 14 18* 17 18 17 12 26 17 16 12
7- 8 | 6 14 17 10 11 19 15 30 17 22 16*
8- 9 | 7 19 19 18 9 12 25 18 12 22 8
9-10 | 5 17 12 16 30* 32* 24 17 28 31? ?
10-11 | 14 13 22 17 37* 8 22 11 13 19 -
11-12 | 27* 25 21 19 10 16 15 11 18 23 16
12-13 | 22 27 43 34* 21 22 20 26 18 48* 38*
13-14 | 40 53* 56* 64* 30 32 36* 31 52* 106* 132*
14-15 | 71* 109* 68* 56* 35 37* 20 28 36 82* 74*
15-16 | 17 20* 14 20 13 17 18 22 16 31* 18
16-17 | 10 7 5 23 17 15 14 20 29 16 4
17-18 | 15 17 18* 21* 24 11 20 24 16 14 9
18-19 | 8 11 19* 9 8 6 11 32 18 19 14
19-20 | 4 6 23* 11 11 11 9 35 28 18 ?
20-21 | 10 8 21* 19* 24* 14 22 17 7 21 51*
21-22 | 28 23 15* 32* 14 13 24 17 39* 33* 36*
22-23 | 28* 19 13 25* 22* 16 17 24 23 23 19
23-24 | 12 18* 9 11 11 12 16 9 15 10 3
24-25 |
25-26 | 4 10 6 8 10 13 14 8 15 8 3
26-27 | 10* 6* 3 10 15 14 14 12 19 14 6
27-28 | 6 8 11 10 9 23? 6 15 22 10 22?
28-29 | 6 5 0 25* 9 11 12 21* 7 6 5
29-30 | 5 7 3 12 8 10 17 14 3 17 6
30-31 | 1 7 3 10 6 11 14 15 12 16 25*
31- 1 | 9 11 17 10 15 14 15 11 11 19 8
- ------+------------------------------------------------------
1999 | 21h 22 23 00 01 02 03 04 05 06 07
Dec | UT
Notes:
. ? probably affected by sporadic-E, tropo, direct reception.
. * warning for relative high number of long duration reflections,
an indication for potential stream activity.
. local time = UT + 1 hour)
Maurice De Meyere
- ----------------------------------------------------------------------
Location: Astronomical Observatory, University of Ghent, Belgium
(ED50 coordinates: 3 42' 32" E, 51 01' 25" N)
Antenna (2x): 4 elements horizontal Yagi, pointed East, elevation= 20 deg
Antenna amplifier: 10 dB gain
narrow band resonance lambda/4 antenna filter
Frequency: (1)=66.29 MHz (signal) and (2)=65.3 MHz (interference control)
Receiver (2x): modified commercial FM receiver
Data acquisition: 12 bits PC-based A/D convertor, 250 Hz sampling rate
Interference rejection:
dual setup: receiver (1) tuned at distant transmitter, receiver (2)
tuned at empty frequency. Anti-coincidence measurement rejects
registration of broadbanded spurious signals (lightning, computers,
ignition motors, etc).
Further information:
see WWW page (additional info + observational data)
http://allserv.rug.acdot be/~hdejongh/astro/meteor/meteor.html
Data format:
results are shown as total reflection time, expressed as
a percentage. The actual number shows 10 times this value.
When no figure is shown, the equipment was either out of service,
or results could have been affected by interference, sporadic-E.
-------------------------------------------------------------
| Dec 1999 | 10x % reflec. time | horiz: day | vert: time UT|
- ----------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
- ---+------------------------------------------------------------
0 | 44 35 27 38 23 70 49 48 58 53 46 73 82 266 268
1 | 47 68 57 60 99 51 47 45 78 85 74 85 103 224 246
2 | 62 38 58 106 45 66 51 80 44 104 66 70 91 185 138
3 | 60 63 80 103 71 89 76 70 68 57 67 84 106 205 121
4 | 80 78 144 87 72 117 110 71 59 77 50 99 93 264 128
5 | 67 147 113 97 82 88 40 60 76 114 57 110 108 205 100
6 | 70 57 116 78 64 64 80 82 125 90 72 87 174 273 163
7 | 81 47 130 95 50 66 37 65 55 81 72 100 293 147
8 | 41 62 37 52 43 34 34 22 70 69 82 133 218 89
9 | 29 45 40 98 71 75 38 55 19 64 55 120 59 131 96
10 | 40 35 67 90 56 43 27 31 28 64 39 52 39 53 71
11 | 34 27 56 68 55 47 21 35 22 31 63 35 44 57 42
12 | 16 20 82 49 27 33 37 20 31 20 53 33 66 17 30
13 | 42 60 27 60 33 17 27 12 35 19 30 29 28 13 27
14 | 13 16 39 34 28 24 17 12 12 19 27 36 19 21 24
15 | 15 15 19 21 29 15 14 13 7 27 20 25 23 69 56
16 | 17 23 52 22 14 12 11 17 11 21 20 28 48 111 36
17 | 19 33 23 21 34 35 14 39 19 26 32 62 105 131 33
18 | 43 32 25 38 29 27 21 25 28 39 38 47 98 203 49
19 | 66 30 32 33 35 37 37 34 27 36 42 36 188 226 51
20 | 55 44 45 42 45 63 50 46 35 48 63 46 214 372 36
21 | 60 45 73 50 67 74 52 47 50 71 92 69 318 436 59
22 | 74 45 49 48 42 51 61 74 83 81 79 106 363 449 52
23 | 37 34 42 31 28 55 43 66 44 47 73 96 273 288 44
- ---+------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
--------------------------------------------------------------
| Dec 1999 | 10x % reflec. time | horiz: day | vert: time UT |
- --------------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
- ---+----------------------------------------------------------------
0 | 53 44 62 37 26 29 33 31 27 52 36 33 22 41 16 20
1 | 57 50 72 46 32 34 37 44 45 25 40 54 29 36 38 45
2 | 78 59 83 58 55 49 56 55 69 49 50 54 40 33 45 42
3 | 57 71 78 65 41 43 62 69 75 50 60 48 34 73 37 35
4 | 108 82 111 99 85 72 86 69 110 71 66 80 73 55 37 55
5 | 81 83 84 76 83 62 71 58 76 59 53 64 49 54 41 50
6 | 70 80 84 59 56 46 59 54 65 49 58 65 54 35 36 55
7 | 64 59 91 69 75 69 67 45 52 114 31 92 145 30 41 58
8 | 55 45 52 57 59 68 45 50 123 88 31 88 54 48 70 60
9 | 25 128 66 76 72 78 68 48 64 132 42 55 72 43 41 37
10 | 19 89 52 49 51 100 41 48 39 80 37 41 36 35 55 59
11 | 42 50 58 60 33 47 50 37 54 95 42 66 78 57 35 56
12 | 63 47 38 50 25 16 35 26 43 71 53 51 36 24 25 44
13 | 37 21 26 52 23 27 22 26 30 19 19 49 23 31 9 41
14 | 24 22 23 27 32 19 11 29 43 37 36 23 43 41 19 22
15 | 14 20 20 9 13 49 13 29 22 16 18 28 17 9 8 20
16 | 24 12 15 13 12 24 25 18 13 19 13 30 18 14 15 17
17 | 16 19 13 14 10 16 56 22 14 10 18 37 15 11 14 14
18 | 25 16 12 11 19 23 29 20 23 22 14 16 15 20 27 34
19 | 22 33 22 29 30 17 56 22 18 24 16 16 19 13 36 18
20 | 28 30 27 22 25 39 49 33 23 29 36 33 22 17 35 28
21 | 41 55 35 45 41 33 62 42 23 40 38 33 41 28 21 24
22 | 41 47 42 40 32 38 58 38 31 60 48 48 24 20 25 27
23 | 31 41 60 50 43 30 56 32 35 17 36 25 21 24 34 32
- ---+----------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Notes:
. strong Geminids activity on December 14-15
Pierre De Groote
- ---------------------------------------------------------------------------
Observer: R.B. Minton
Location: Raton, NM (104 26' W, 36 54' N, 2000 m above sea level)
Frequency: 92.9 MHz
Transmitters: KTZA FM 100 kW, Artesia NM, dist 444 km, geogr azim 178 deg
KSPZ FM 53 kW, Color. Springs, dist 217 km, geogr azim 352 deg
KYBR FM ? kW, Espanola NM, dist 180 km, geogr azim 236 deg
???? FM ? kW, Juarez Mexico, dist 579 km, geogr azim 198 deg
KWFM FM 90 kW, Tucson AZ, dist 798 km, geogr azim 233 deg
Antenna: folded dipole, on 6.3 m high mast, oriented N-S
Receiver: Subaru 12 V DC car radio with digital tuning
Observing method: conditioned audio input in the game port of an IBM 386 SX-50
PC, 128 samples/second, DOS/Basic software, automatic
Total hourly counts
November 1999
Nov| UT
1999| 0h 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
- ----+------------------------------------------------------------------------
1 | 11 27 34 34 30 14 18 15 20 15 11 15 15 21 17 28 40 38 27 21 21 19 21 32
2 | 27 23 40 33 28 28 14 13 21 9 16 23 24 22 19 19 51 31 31 33 26 30 27 41
3 | 34 36 29 25 30 26 24 24 18 19 26 32 20 19 22 36 50 47 35 31 30 39 37 29
4 | 29 24 33 28 42 38 22 30 22 23 30 37 27 36 32 35 46 36 25 27 32 18 27 38
5 | 37 45 45 40 49 29 24 23 36 25 34 40 29 31 31 39 44 29 46 44 37 37 39 26
6 | 35 29 44 42 46 37 26 22 29 23 19 22 32 23 27 25 41 50 51 36 24 25 25 36
7 | 28 25 28 28 34 27 21 20 20 28 18 30 19 15 25 36 42 21 33 25 26 25 26 23
8 | 24 32 33 31 47 34 24 20 5 0 6 22 24 28 19 26 26 20 27 34 16 28 12 33
9 | 34 24 27 30 38 34 22 17 14 23 27 25 23 20 28 29 47 38 36 19 20 22 24 31
10 | 19 33 26 34 41 29 25 19 30 24 16 26 33 33 19 11 26 39 33 21 22 20 20 6
11 | 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 29
12 | 8 9 5 7 9 10 3 0 9 3 2 6 7 6 8 14 18 13 10 9 7 10 9 7
13 | 8 8 11 11 12 8 5 1 9 3 4 6 5 4 9 9 14 9 7 11 6 11 6 20
14 | 9 9 5 12 14 10 5 3 5 4 6 6 6 5 5 13 13 11 10 9 6 5 9 15
15 | 8 9 6 5 10 5 8 4 5 2 3 5 2 8 6 8 20 11 8 5 5 12 6 15
16 | 5 12 14 7 15 9 11 5 6 8 7 1 8 11 5 16 23 13 16 8 12 6 6 17
17 | 6 9 6 8 13 13 2 5 13 6 13 9 13 6 9 13 25 14 14 9 10 7 11 15
18 | 5 15 9 9 11 8 3 9 5 12 26 18 10 14 18 23 30 26 21 7 3 8 6 11
19 | 8 7 8 16 10 13 4 4 14 11 11 7 4 4 3 9 17 16 20 9 5 6 7 8
20 | 3 3 5 6 4 7 7 2 11 7 2 6 2 9 6 14 16 16 8 3 5 6 6 6
21 | 7 5 2 4 1 3 1 2 2 7 6 1 0 0 2 3 11 6 9 0 0 4 2 5
22 | 6 3 7 7 8 5 2 3 2 5 2 1 2 2 7 7 6 8 4 5 8 7 6 5
23 | 4 4 6 8 5 4 10 3 4 5 1 7 6 5 5 6 4 2 14 1 9 7 5 16
24 | 8 4 7 3 4 9 2 3 3 6 3 6 9 4 6 4 18 12 3 8 5 1 8 19
25 | 2 7 6 4 9 10 7 3 2 3 3 2 5 3 2 0 13 5 5 5 0 5 2 2
26 | 3 3 3 4 2 3 0 2 2 1 2 3 0 4 3 4 12 9 5 4 8 2 2 8
27 | 2 2 5 4 3 6 3 3 2 1 5 3 0 2 2 3 11 6 4 4 9 6 2 7
28 | 6 7 5 7 6 6 4 0 6 3 5 3 4 2 1 5 7 7 4 2 7 4 7 16
29 | 8 7 5 6 7 3 3 1 2 5 3 2 2 5 1 5 9 5 33 7 3 5 4 8
30 | 5 3 9 4 7 0 1 1 4 1 2 4 6 6 1 4 8 13 16 9 6 2 1 6
- ----+------------------------------------------------------------------------
1999| 0h 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Nov| UT
Signal duration distribution for the above period
Duration (s) Number
< 0.1 2953
0.1 to 0.3 2254
0.3 to 1 1790
1 to 3 1422
3 to 10 1104
10 to 30 310
> 30 13
Note:
. the numbers are lower since Nov 11 for an unknown reason
R.B. Minton
- ---------------------------------------------------------------------------
Observer: Sadao Okamoto
Location: Damine Meteor Observatory, Japan (137.53 E, 35.07 N)
Transmitter: HAM beacon (JA9YDB) for RMO (50 W CW, 53.7500 MHz) by
JA9BOH Kimio Maegawa. No modulation except for identification.
Antenna: 2 element Cross Yagi 4 dBi aiming to Zenith. Omni-directional
in azimuth and elevation above 15 deg elevation.
Location: Fukui-NCT at Sabae city (136.2 E, 35.9 N)
At present time about 10 observers are listing for
Kimio Maegawa's 53.75 MHz beacon.
Receiver: IC575
Antenna: 2 element Yagi, pointed to the zenith.
Observing method: FFTDSP software, manual count.
Hourly echoes over 10 dB SNR
1999
Nov|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Nov|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
- ---+-------------------------------------------------------------------------
1|23 45 37 52 48 44 45 50 37 23 26 28 23 18 17 13 16 11@21 n n 32 33@38
2|26 39 61 45 30 28 32 35 42 37 21 n n n e@14 10 8 13@13 e 38 44@36
3|30 50 51 53 54 52 43 30 n@18@15 n n 12 n n@13 n@10 n@13 33 39@44
4|40 45 58 51 40 51 51 36 35@21@21 16 12 16 14 e n 11 15 15 25 32 42@28
5|37 34 55 62 38 57 38 37 19 17 20@12 n 7 n n n n 13 16 23 26 n@24
6|35 46 55 52 42 41 44 35 36 n 34@18@20 e e@15 n -- 14 24 25 26 29@40
7|29 48 55 58 53 45 55 55 31 31 25 24 18 18 10 18 17 12 11 11 24 33 34@30
8|30 56 45 51 60 34 52@46 e e n e e e 10 14 n n n@18 17@18 27@42
9|33 53 46 52 38 43 47 e n 26 31 n n n 9 10 13 10 11 12 23 33 53@31
10|46 50 51 50 56 49 58 41 22@16 n n n e n n e e e e 19 36 52@46
11|34 51 53 63 67 54 54 48 43 29 18 20 n n n n@13 @5 n n@33 n 29@21
12|44 46 48 57 56 48 43 48 40 42 41 26 20 23 n n 11 13 n@12 23 n 41@36
13|24 26 51 50 54 49 46 45 29 25 18 12 4 3 5 8 13 9 22 18 18 27 35@43
14|25 46 56 41 56 50 47 42 44@21 n 37 19@30 n 28 13 n n n 17 30 34@33
15|42 46 48 56 60 50 35 42 33@26 n 33 28 19 25 11 19 9 5 15 25 38 39@21
16|36 46 42 37 49 43 39 34 31 17 21 n n 10 n n n n n n n@21 39@25
17|29 50 46 51 56 33 66 53@40 n n n n n n@14 5 13 12 13 26 42 39@26
18|40 48 49 59 36 63 56 64 58 58 86102 19@16 7 11 8 9 12 13 23 38 39@46
19|40 65 81 92 81 55 72@49@45 37 21 19 8 3 11 12 11 17@18 e e 32@24@16
20|32 55 45 57 68 67 53 64@48 n 12 19 22 23 8 @6@11 7 12 14 21 27 55@46
21|41 51 63 48 68 54 59 57@33 n n n n n n n n n@18@16 13 35 50@28
22|37 40 54 61 60 67 51 47 37 n@20@15 14 19 9 11 10 8 11 15 20 26 35@22
23|40 39 43 55 47 51 56 e e n@39 25 18 25 11 12 11 14 9 15 16 26 39@45
24|44 42 39 55 57 55 58 e e e e n 16 24 e e n 4 11 9 n@28 47@33
25|27 48 47 66 50 52 31 42 e@27 31 17@21 e @6 @6 @9 n @9 7 23 34 43@30
26|31 34 59 48 52 49 46 33@21 28 n@21@24@24@12 10 n n@13 7 18 35 39@30
27|34 41 56 49 43 52 56 35@36 n n 14 n n n e n n 14 11 25 42 47@43
28|40 41 59 76 55 59 54 59 41 44 21 23 25 n 23 12 15 10@12 24 20 44 43@26
29|17 54 64 65 61 50 45 28 20@24 n n n n@10 7 14 8 13 15 25 32 42@42
30|47 50 85 66 62 63 53 59 46 29 20 17 13 24 19 11 11 8 9 15 25 34 44@46
- ---+-------------------------------------------------------------------------
Nov|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Nov|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
1999
Hourly echoes over 10 dB SNR
1999
Dec| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Dec| 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
- ---+--------------------------------------------------------------------------
1| 44 51 77 73 58 61 68 53 44 37 17 16 15 27 -- -- 16 10 n 10 22 41 45 --
2| 44 43 66 63 74 58 59 50 45 43 36 40 29@34@15 e e 9 18 9 12 37 45@49
3| 17 22 46 51 46 53 29 41 17 n n n n n n n n 11 15 10 29 51 44@60
4| 54 63 65 73 92 65 71 40 e 30 27 26 22 19 n n e @6 15 13 22 20 32@48
5| 34 59 54 56 62 71 68 61 57 n n@33 30@30 n n e e 8 13 27 33 40@31
6| 30 47 54 80 67 65 55 57 40 39 27 15 5 9 11 e@10 11 13 14 16 30 28@36
7| 43 48 69 92 73 54 41 40 27 n n n n n n 8 5 4 13 12 21 20 32@32
8| 39 52 61 51 56 71 58 53 22 19 19 n n n n n n 11 14 26 22 41 53@54
9| 68 57 69 97 55 67 65 73 51 34 29 25 23 18 14 20 17 11 19 33 21 53 53@48
10| 58 51 58 79 83 71 75 60 n 30 n n n n n n 17 9@10 28 33 49 72@84
11| 54 53 73 86 78 90 82 70 e 46 33 29 n n n n n@12 n@10 33 33 46@39
12| 56 46 82120 91 85 65 78 50 n n n n n n n@13 9 23 30 49 73 86@99
13| 85 48122143104 93 86 85 38 40 33 37@31 33 17 13 15 13 22 27 75 78 96@141
14|130 59151181159118117@84 e e n n n n n n n n@21@35 58 93 97@136
15|168 74165194166123 97 98 83 50@27 n 23 e e e n n n@27 35 52 54@54
16| 57 37 67 71 67 72 53 58 43@38@22@20 n n n n n n n 9 33 39 38@64
17| 49 49 53 58 54 61 63 56 47 37 31 27 30 38 21 15 9 9 16 9 19 29 45@34
18| 32 25 36 36 38 48 62 47 30 41 43 28 21 19 11 16 18 8 9 8 10 29 28@32
19| 38 26 40 47 42 56 45 52 56 24 30 42 35 13@15 -- 9 10 19 15 31 31 31 --
20| 41 44 57 64 67 70 82 61 24 25 n n n n n n @6 6 15 11 25 30 34@34
21| 37 50 48 50 55 57 70 61 45 36 15 11 12 12 13@12 7 10 15 10 17 33 40@32
22| 45 54 62 62 54 50 62 60 50 24@24@12 n n n n n 7 8 11 9 32 27@45
23| 31 40 51 52 58 58 68 69 30 18@15 n n n n n n 7 13 13 17 45 29@24
24| 26 42 37 49 47 48 49 53 37 39 15 23 12 11 11 11 11 7 5 10 20 34 29@28
25| 44 47 49 44 44 50 52 48 35 29 n n n @8 9 e e n @9 12 27 23 49@44
26| 34 41 70 64 48 71 59 54 40 18 17 11 n n n n @6 6 10 14 26 26 35@37
27| 37 52 51 51 57 69 70 64 33 20 n n n n n n @7 11 13 7 14 27 28@36
28| 38 47 40 61 54 58 62 47 57 34 20 n n n n n n 8 10 6 22 37 34 --
29| 42 44 61 43 48 62 62 57 41 21 13 16 14 12 10 6 6 10 12 12 25 24 28@25
30| 31 47 56 39 49 63 53 59 42 31 n n@12 10 23 7 8 18 9 7 19 35 43@45
31| 35 45 45 52 58 56 62 47 55 25 33 28 23 14 n n 5 8 10 14 13 27 39@34
- ---+-----------------------------------------------------------------------
Dec|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Dec|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
1999
Echoes with duration > 5 s
1999
Nov|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Nov|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
- ---+-------------------------------------------------------------------------
1| 1 1 3 4 2 6 5 2 1 1 2 2 1 1 1 2 1 2
2| 4 6 1 1 1 3 2 3 1 3 1 1 2
3| 1 2 4 4 1 4 4 1 1 2 1 1 1 2
4| 1 3 1 1 3 2 3 2 1 2 3 2 1 1 3
5| 3 2 6 6 2 3 6 1 2 1 1 1 2
6| 1 1 8 5 3 3 9 4 1 1 1 1 1 1 4
7| 2 4 3 3 3 4 6 2 3 1 2 1 1 1 1 1 1 1
8| 2 6 2 2 3 2 9 1 2 1 1 3 2
9| 1 3 2 5 3 4 4 2 2 1 1 1 1
10| 3 3 3 2 1 1 2 5 3 1 2 1
11| 1 4 1 7 6 4 8 3 3 2 1 1
12| 1 6 3 2 5 1 2 3 4 1 3 1 1 1 2 1 1
13| 1 3 7 3 1 5 5 2 6 1 1 1 1 1 1 3
14| 4 6 1 9 3 4 2 5 2 1 1 1 1
15| 1 2 3 4 4 2 1 1 2 1 1 2 1 1 1
16| 2 1 4 2 1 4 3 5 2 1 1
17| 2 4 7 4 3 2 3 1
18| 4 4 2 3 7 6 11 22 10 15 14 11 4 1 4 1
19| 3 8 10 16 13 12 20 2 6 3 3 1 1 1 1 1
20| 2 1 4 5 3 7 4 1 3 1 1 1
21| 3 1 2 6 8 4 2 1 2
22| 3 1 6 1 3 8 2 2 1 2 1
23| 1 5 3 3 1 4 3 3 4 1 1 1
24| 1 2 5 2 4 3 1 2 1
25| 1 1 3 1 1 2 1 1 1 1 2
26| 1 1 1 2 2 2 1 1 1
27| 1 2 6 1 2 1 2 3 2
28| 1 2 4 5 1 4 3 3 3 2 2 1 2 2 1 1 3 1
29| 2 3 3 4 3 3 1 2
30| 1 3 3 6 3 1 3 3 1 3 1 2 1 1 1 1
- ---+-------------------------------------------------------------------------
Nov|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Nov|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
1999
Echoes with duration > 5 s
1999
Dec|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Dec|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
- ---+-------------------------------------------------------------------------
1| 2 3 10 5 2 5 6 6 2 2 2 1 1 3 1
2| 4 1 5 6 1 2 3 4 1 2 2 1 1 1 2
3| 2 1 2 6 4 5 6 1 1 2 1
4| 2 6 4 7 4 3 1 3 1 1 2 1 2
5| 3 3 5 9 3 7 9 9 7 3 1 1 2 1 1
6| 3 5 4 8 5 6 5 3 1 3 1 2 1 1 2
7| 1 5 3 8 10 13 7 4 4 1 1 2 1
8| 4 3 7 8 7 7 6 5 3 1 1 2 1 4
9| 3 2 8 11 2 11 6 12 8 1 5 2 5 2 1 3 1 5
10| 8 5 8 10 6 4 11 11 5 1 1 8 10
11| 8 5 10 10 9 6 8 9 4 3 1 2 3 4 4
12| 6 5 6 14 3 6 4 8 5 1 2 1 9
13|14 1 16 17 14 11 5 12 1 4 4 1 3 1 1 1 3 7 9 12 14
14|30 1 28 51 28 21 24 17 3 1 4 12 19 32
15|61 22 57 86 78 43 33 19 18 7 3 1 1 2 5 3 1
16| 6 2 7 7 6 8 5 6 6 1 1 2 3
17| 3 3 5 8 8 5 4 1 6 1 1 1 3 1 1 1 1 1 1
18| 4 4 4 2 5 7 5 2 2 1 1
19| 2 1 1 4 3 4 4 7 7 2 2 3 2 1 1 1 1 1
20| 1 5 4 4 5 10 10 12 3 1 1 1 1
21| 4 7 2 2 7 3 11 4 3 5 1 1 1 3 1 1 2 1
22| 2 5 2 7 3 3 5 3 4 2 1 1 1 1 3
23| 2 3 4 4 5 9 14 7 4 1 2 1 1 1 1
24| 2 4 2 4 3 3 4 6 4 3 2 1 1 1 4 1 2 1
25| 2 3 3 4 5 4 8 3 4 1 1 1 2 2 1
26| 1 1 8 6 5 4 8 4 4 1 1 1 1
27| 3 4 3 4 2 5 11 9 5 1 1 1
28| 4 3 4 2 2 6 8 6 2 2
29| 2 3 4 2 6 7 6 4 1 2 1 3
30| 1 2 4 4 3 4 4 5 6 1 1 1 1 1
31| 1 1 1 2 3 4 4 2 3 2 2 3 1 1 2 1 2
- ---+-------------------------------------------------------------------------
Dec|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Dec|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
1999
Echoes with duration > 20 s
1999
Nov|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Nov|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
- ---+-----------------------------------------------------------------------
18| 1 2 2 3 5 6 6 7 1
19| 1 2 2 3 6 2 7 2 3
Daily rate of long echoes (duration > 20 s)
1999
Nov 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
- --------------------------------------------------------------
Count 2 4 2 1 0 3 0 4 4 1 3 3 1 3 3
Nov 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
- ----------------------------------------------------------------
Count 1 3 33 28 4 3 4 2 2 1 2 0 5 0 3
Dec 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
- ---------------------------------------------------------------
Count 1 1 1 1 5 1 4 6 7 4 3 1 4 7 9
Dec 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
- -------------------------------------------------------------------
Count 5 8 1 2 3 6 4 8 2 5 2 3 4 1 2 3
Notes:
. Leonids outburst was observed on Nov 18, at 02h UT and from 16h UT
to 21h UT
. the peak of Geminids activity was observed on Dec 14, 18h UT.
-: lost counts because of high noise level or machine failure.
@: hourly rate estimated by effective observation time less than 60 min.
n: contamination due to radio noise or interference.
e: contamination due to sporadic E opening.
f: no data available due to TX or RX failure.
LT = local time = JST = UT + 9 hours
Sadao Okamoto
- ---------------------------------------------------------------------------
Observer: Ton Schoenmaker
Location: Roden, Netherlands (06 26' E, 53 08' N)
Frequency: 55.274 MHz
Transmitter: Spanish TV channel E3 (video); transmitters in La Muela (30 kW),
Gamoniteiro (50 kW) and Aitana (60 kW); all stations within
100 Hz of nominal frequency; distance 1650 km
Antenna: 4-element horizontal Yagi, geographical azimuth 105 degrees (ESE),
elevation 15 degrees
Receiver: Yupiteru MVT-9000 in FM mode; sensitivity 0.5 uV at 12 dB S/N
Observing: audio (noise) signal from ear-phone socket was rectified and
recorded with a Servogor stripchart recorder with a chart speed
of 120 mm/hour
In the table below the uncorrected hourly counts for signals stronger than
0.1 uV are given. The activity on 21/22 December may be considered to be
caused by sporadic meteors.
| December 1999
UT | 12 13 14 15 16 21 22
---+----------------------------------------------------
00 | - 162 189 162 50 - 36
01 | - 98 158 73 43 - 50
02 | - 58 97 45 42 - 50
03 | - 69 96 43 33 - 48
04 | - 70 116 57 39 - 40
05 | - 50 103 47 30 - 39
06 | - 59 98 41 - - 53
07 | - 49 106 30 - - 35
08 | - 55 115 20 - - 25
09 | - 53 74 34 - - 30
10 | - 33 54 26 - - 35
11 | - 19 24 18 - - 26
12 | - 12 26 21 - - 21
13 | - 7 23 9 - - 13
14 | - 6 12 10 - - 11
15 | - 3 5 2 - - 9
16 | - 9 15 3 - - 12
17 | - 22 26 7 - - 12
18 | - 62 63 13 - - 9
19 | 99 136 94 25 - - 18
20 | 117 152 124 27 - - 25
21 | 154 166 177 40 - - -
22 | 176 199 197 58 - 35 -
23 | 186 214 195 63 - 54 -
---+----------------------------------------------------
UT | 12 13 14 15 16 21 22
| December 1999
Note:
. The somewhat uncommon geometry described above (receiving antenna pointing
perpendicular to the directions of the transmitter) resulted in a peculiar
observability functions, so the counts are difficult to interpret in terms
of Geminids activity. Apparently the observability function peaks at about
23h UT when the main lobe of the 4-element yagi points to the radiant of
the Geminids.
The highest activity occurred on 13/14 December 1999 with counts of about
4 times the sporadic level. For the midpoint between The Netherlands and
Spain the setting and rising of the radiant occurred at 11h30m and 15h30m
UT respectively.
Ton Schoenmaker
- ---------------------------------------------------------------------------
Observer: Pierre Terrier
Location: Canet, France (3 36'E, 43 41' N)
Frequencies: 102.5 MHz
Transmitter Location: Several, which complicates things!
Antenna: 5-element Yagi FM, horizontal polar.
astronomical azimuth 90 deg (W), elevation 20 deg.
Receiver : FM Tuner Kenwood KT-54 L
Observing method: Electronic interface on LINE output audio signal are fed in
COM1: of Laptop 486.
METEOR v 2.05 processes the signal and records on hard disk the
time of the events.
METEOR parameters: SAMPLING = 120, THRESHOLD = 0.8, DELAY = 30 s
| Dec 1999
UT | 3 4 5 6 7 8 9 10 11 12 13 14 15
---+---------------------------------------------------
0 | 0 2 0 0 0 0 5 0 5 3 5 5 4
1 | 0 1 1 0 0 1 1 3 4 4 3 8 6
2 | 0 0 1 1 0 0 1 3 6 1 4 9 3
3 | 0 2 0 0 0 0 0 0 6 4 8 4 2
4 | 0 1 1 1 1 1 3 2 16 42 9 8 5
5 | 0 2 2 2 2 1 7 8 11 46 20 24 12
6 | 0 5 0 1 2 6 5 5 16 97 32 30 19
7 | 0 1 2 1 3 1 2 7 16 69 22 24 15
8 | 0 1 0 - 2 1 0 3 10 42 10 21 10
9 | 0 3 0 - 1 4 3 4 5 84 7 10 7
10 | 0 0 0 - 3 2 1 5 2 81 8 6 4
11 | 0 0 1 - 3 3 1 10 1 9 4 1 2
12 | 0 1 1 - 0 0 1 0 3 1 1 5 4
13 | 0 0 1 - 0 2 3 9 3 5 6 5 2
14 | 0 0 1 - 5 1 1 3 3 7 2 2 3
15 | 0 0 1 1 12 0 3 3 2 1 5 0 5
16 | 0 0 0 1 0 0 5 7 3 3 3 1 0
17 | 1 2 1 2 0 1 1 4 7 2 5 10 0
18 | 9 1 0 0 1 1 9 5 4 7 15 13 0
19 | 7 0 2 1 1 1 8 5 6 13 11 13 0
20 | 4 1 0 2 1 1 7 6 7 1 11 13 0
21 | 10 0 1 1 5 0 3 5 7 9 6 11 0
22 | 2 0 0 2 2 5 3 3 9 6 6 5 0
23 | 6 3 0 1 0 4 3 2 12 2 4 9 0
---+---------------------------------------------------
UT | 3 4 5 6 7 8 9 10 11 12 13 14 15
| Dec 1999
| Dec 1999
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---+---------------------------------------------------------------
0 | 2 2 3 5 2 2 3 83 6 4 4 6 11 5 7 3
1 | 5 1 1 5 3 5 3 74 2 5 6 2 5 3 4 6
2 | 2 3 5 5 4 2 5 145 2 2 2 5 12 3 4 4
3 | 5 3 4 0 4 5 6 91 7 6 8 7 11 8 6 7
4 | 7 5 9 5 7 5 10 34 6 4 5 7 9 4 9 5
5 | 5 2 7 1 8 5 9 45 6 9 4 6 7 7 8 6
6 | 4 8 10 4 1 10 18 7 11 5 11 7 11 10 11 7
7 | 2 4 9 5 5 5 5 4 5 4 5 3 10 2 4 6
8 | 4 8 3 5 6 13 15 11 12 10 8 3 8 5 14 10
9 | 4 9 5 3 10 2 1 3 6 3 3 0 13 9 12 9
10 | 1 7 1 4 4 8 4 9 6 2 3 0 6 8 13 12
11 | 7 1 1 4 3 2 9 8 10 5 7 0 6 11 11 10
12 | 1 0 1 1 2 3 6 5 7 2 4 0 9 5 13 7
13 | 5 2 4 7 1 2 12 9 8 6 5 0 10 3 6 5
14 | 1 0 2 0 4 1 6 4 8 5 5 0 7 7 5 5
15 | 1 3 2 4 4 8 34 5 4 6 8 0 6 5 13 4
16 | 6 1 3 5 3 9 35 7 1 2 7 0 1 8 10 12
17 | 3 3 1 4 1 6 41 4 4 2 4 0 8 8 4 4
18 | 4 0 2 2 2 3 60 23 3 1 8 0 5 11 8 3
19 | 2 5 0 3 0 20 25 4 2 2 2 0 1 3 7 5
20 | 2 7 2 6 2 22 31 8 9 3 7 0 8 4 8 6
21 | 7 2 4 4 3 4 132 12 2 0 3 0 3 4 17 1
22 | 1 6 3 4 2 5 92 4 5 0 5 0 8 0 5 5
23 | 1 0 3 0 2 2 42 4 3 7 4 0 6 0 1 3
---+---------------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
| Dec 1999
Pierre Terrier
- ---------------------------------------------------------------------------
Observer: Garfield Tsao (BM2EQB)
Location: LonTan Observatory
LonTan, TauYan, Taiwan R.O.C. (121 14'37" E, 24 52'54" N by GPS)
Frequency: 50.0169 MHz USB mode 3 kHz width.
Antenna: Comet made 50MHz Yagi HB 4 element (gain 10.3 dBi)
astronomical azimuth 225 deg (=NE), elevation 7 deg.
Transmitter: MIYAZAKI University Japan, USB mode, 50 W (24 hours),
distance about 1125 km from Lon Tan.
Receiver: Icon PCR-1000 computer controlled all band receiver
Sensitivity: 0.25 uV for 10 dB S/N for USB mode
Observing method: the beacon 860-890 Hz voice signal (by FFTDSP) is
received by a low frequency filter (850 Hz)and fed into
the D/A converter and computer in real time.
Data sampling system: using an 8 bits A/D card to PC/AT and Qbasic program
with 1/8 second sampling interval to store the> 1.0 s reflections.
November 1999: Leonids
1999|00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Nov|16h17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
- ----+-------------------------------------------------------------------------
16 | - - - - - - - - - - - - - - - - - - - - - - - 11
17 |20 19 14 5 21 32 37 28 34 30 26 31 13 8 15 9 9 10 11 5 9 11 9 7
18 | 6 17 9 9 14 30 45 47 56119 112 36 - - - - - - - - - - - -
Notes:
. "E" mark= E layer propagation and E layer sporadic of reflection.
. Nov 17, 9h LT interference by background noise
. long and strong echoes:
Nov 17 11 h 06 m 10 s LT echo > 20 dB
11 h 29 m 10 s LT echo > 25 dB
Nov 18 05 h 40 m 40 s LT echo > 20 dB
06 h 42 m 00 s LT echo dur > 60 s
07 h 08 m 00 s LT echo dur > 120 s
08 h 47 m 40 s LT echo > 20 dB
09 h 44 m 30 s LT echo > 20 dB
10 h 19 m 40 s LT echo dur > 60 s
11 h 13 m 10 s LT echo dur > 240 s
Garfield Tsao
- ---------------------------------------------------------------------------
Observer: Ilkka Yrjola
Location: Finland (26 35' E, 60 54' N)
Frequency: 88.8 MHz ?
Receiver: Salora SRP-22 modified, narrow band FM (B=15 kHz)?
detected signal level >-122 dBm.
FM detection, no pulse noise rejection required.
Antenna: 2-el. Yagi, G=4 dBd to SW, azimuth 45 deg (SW), polarisation H.
Data sampling system: threshold triggering, sampling rate 32 ms.
Computer logs total hourly elapsed reflection time, number of
triggers for the hour, the longest time the signal was
continuously above detection level for the hour.
Data on major showers available in the Compact MS-Soft format.
Software for viewing available from
www.saunalahti.fi/~oh5iy/radio50.zip (754 K).
Geminids 1999
Meteor counts in one hour intervals starting at:
UT | 12 Dec 13 Dec 14 Dec 15 Dec
----+----------------------------------
0h | 319 694 677 776
1 | 295 311 425 503
2 | 333 278 351 374
3 | 698 334 658 467
4 | 398 655 1027 547
5 | 712 721 1105 688
6 | 408 682 1194 617
7 | 451 632 1151 582
8 | 412 480 770 442
9 | 281 398 502 458
10 | 205 397 373 293
11 | 295 332 359 226
12 | 267 ? 334 264
13 | 257 ? 318 310
14 | 184 ? 299 271
15 | 215 353 490 229
16 | 260 440 590 288
17 | 299 636 779 247
18 | 350 794 862 336
19 | 345 898 959 622
20 | 529 982 1078 311
21 | 709 1126 1174 287
22 | 569 1152 1151 325
23 | 569 1182 877 369
----+----------------------------------
UT | 12 Dec 13 Dec 14 Dec 15 Dec
Ursids 1999
Meteor counts in one hour intervals starting at:
UT | 20 Dec 21 Dec 22 Dec 23 Dec
----+----------------------------------
0h | 168 172 199 213
1 | 183 162 259 216
2 | 192 200 199 179
3 | 211 156 165 183
4 | 207 232 216 203
5 | 263 252 271 236
6 | 321 274 293 301
7 | 240 333 276 267
8 | 307 483 278 261
9 | 229 379 336 190
10 | 351 220 290 247
11 | 415 400 304
12 | 287 472 266
13 | 241 619 208
14 | 215 193 159
15 | 151 179 175
16 | 159 150 141
17 | 155 149 155
18 | 141 245 219 155
19 | 190 170 186 160
20 | 197 198 279 174
21 | 168 239 285 235
22 | 189 242 270 225
23 | 183 235 306 177
----+----------------------------------
UT | 20 Dec 21 Dec 22 Dec 23 Dec
. tropo on Dec 22, 11h - 18h UT
Ilkka Yrjola
2. ABOUT THE RMOB
The RMOB is an independent initiative of some workers in the field of radio
meteor scatter observations and data reduction. It started in August 1993 in
order to spread rapidly the Perseid results via E-mail. Since then, it has
appeared monthly, and it has gradually been expanded. In regularly publishing
summaries of observations, potential radio observers are kept up to date of
existing installations, possibilities and limitations of radio meteor
observations. In the long run, there should be sufficient observing stations
to cover the whole globe, allowing to detect stream outbursts which may
remain unnoticed visually.
RMOB contains typically: summaries of recent observations, equipment data,
first results of stream activity by radio methods, relations between radio
and optical meteors, references to other publications in the field of meteor
astronomy and radio scatter techniques, announcements of meetings, short
questions and answers, non-commercial (second hand) sale of radio equipment,
available software.
Contributors are mentioned, and interested persons are asked to contact them
directly.
RMOB can be copied freely in unabridged and unmodified form. Extracts should
indicate the source (Radio Meteor Obs Bulletin, month and year).
If you want to subscribe (or un-subscribe) to the E-mail distribution list,
please send a message to C. Steyaert.
Those not having access to E-mail can obtain a printed copy free of charge
from J. Van Wassenhove (current or back-issues).
3. ANNOUNCEMENTS: French frequency list, COLORGRAMME METEOR
Date: Fri, 17 Dec 1999 08:17:44 +0100
Hi METEOR user,
If you are in Europe and radio-meteor observer see this web address for the
french frequency of the transmitter in France :
http://www.brume.org/radios/
Date: Sun, 19 Dec 1999 12:28:54 +0100
Hi METEOR soft user!
I am happy to announce you the creation a new software, that is going to
help you in the visualization of your data.
COLORGRAMME METEOR is a Windows 95/98 (free) application especially for
meteor observers! For more info, go to:
http://membres.tripod.fr/meteor_astro_elec/us/color.html
Regards,
Pierre TERRIER
4. CONTRIBUTORS / USEFUL ADDRESSES
Enric Fraile Algeciras (EA3BTZ)
C/ Moianes 19-21 Esc. A 6: 1*, E Barcelona
E-mail: EA3BTZ@mx3.redestb.es
http://www.redestb.es/personal/ea3btz (in Spanish)
Michael Boschat
6306 Cork St., Apt.512, Halifax, Nova Scotia, Canada
E-mail: andromed@atm.daldot ca
Maurice De Meyere (ON4NU)
Hullekensstraat 24, B-9831 Deurle, Belgium
tel: +32 (9) 282 35 26
E-mail: mauricedot demeyere@planetinternetdot be
University of Ghent, Astronomical Observatory
Krijgslaan 281(S9), B-9000 Gent, Belgium
E-mail contact: Paul@izar.rug.acdot be, Pierredot deGroote@rug.acdot be
Werfried Kuneth
Ferndorf, Austria
E-mail: kuneth@net4youdot net
http://www.qsldot net/oe8fnk
Alastair McBeath
IMO: International Meteor Organization
12A Prior's Walk, Morpeth, Northumberland, NE61 2RF, England, U.K.
E-mail: vice_president@imodot net
R.B. Minton
Astrometric Observatory
568 North First Street, Raton, NM 87740, USA
tel: +001 (505) 445 7009
Ton Schoenmaker (PA0EFA), Dutch Meteor Society
Meester Homanstraat 8, NL-9301 HP Roden, Netherlands
E-mail: schoenmaker@NFRAdot nl
Chris Steyaert, VVS
Kruisven 66, B-2400 Mol, Belgium
tel: +32 (14) 31 51 04
E-mail: steyaert@vvsdot be
Compuserve: 72650,3513
Sadao Okamoto
E-mail: okamoto@jim.sugiyama-u.ac.jp
Pierre Terrier
Canet (close to Montpellier), France
E-mail: pierre.terrier@wanadoo.fr
http://members.tripod.com/~astro_electronic/index.html
Garfield Tsao (BM2EQB)
LonTan Observatory, LonTan, TauYan, Taiwan
E-mail: tsao5916@ms17.hinetdot net
http://www.geocities.com/Eureka/Office/1528 (in Chinese)
Jeroen Van Wassenhove, VVS
's Gravenstraat 66, B-9810 Nazareth, Belgium
tel: +32 (9) 385 61 09
E-mail: 100101.734@compuserve.com
Ilkka Yrjola
Jukolantie 16, FIN-45740 Kuusankoski, Finland
E-mail home: oh5iy@sci.fi
http://www.sci.fi/~oh5iy/
Call: OH5IY, packet radio: OH5IY@OH5RBG.#KVL.FIN.EU
--
Christian Steyaert (RMOB9912) 8 January 2000
--
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