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(meteorobs) Radio Meteor Obs. Bull. July 1999
Radio Meteor Observation Bulletin No. 72 August 1999
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.
July 1999
UT | 3 11 12 13 14 19 20 21 22 23 24 25 26 27 28 29 30 31
----+-------------------------------------------------------------------------
0 | 16 7 3 3 0 3 4 3 2 6 7 5 4 8 7
1 | 5 5 4 4 0 5 4 5 4 7 12 4 10 11 6
2 | 3 1 1 6 1 0 1 4 8 8 10 9 16 7 8
3 | 0 2 0 0 0 0 2 2 6 2 1 10 10 6 14
4 | 1 2 1 1 0 0 1 0 0 1 7 2 4 1 11
5 | 5 1 1 2 0 3 1 0 3 6 0 2 2 2 6
6 | 3 8 1 0 4 2 4 0 2 3 5 3 2 6
7 | 4 1 2 0 3 2 5 0 4 5 7 3 5 4
8 | 0 1 2 0 3 1 1 3 4 1 4 3 5 3
9 | 10 1 3 3 1 3 1 3 4 0 9 0 2 6
10 | 17 1 0 0 2 4 1 3 1 1 2 1 0 3
11 | 1 0 0 8 0 0 0 0 1 1 2 2 2 2
12 | 1 18 0 0 27 1 0 0 0 0 0 5 0 0 2
13 | 12 3 10 0 1 0 1 1 0 0 1 7 1 0 0
14 | 1 0 1 1 0 2 0 0 0 1 0 0 0 1 0 1
15 | 1 0 0 21 0 0 0 9 1 3 7 0 0 0 2 1
16 | 3 1 2 0 3 0 1 5 0 0 0 1 2 0 0 2
17 | 12 2 5 0 0 0 2 0 0 3 13 4 1 0 1 2
18 | 22 2 0 2 2 8 1 0 0 2 9 3 2 2 1 1 1
19 | 11 4 23 0 1 4 1 1 1 2 18 2 7 2 0 0 0
20 | 1 12 5 2 1 0 0 9 9 1 0 1 19 5 0 1 1
21 | 1 5 4 0 0 0 2 9 0 0 3 1 36 2 2 0 0
22 | 0 2 4 8 2 1 2 2 2 3 5 5 3 3 4 0 0
23 | 0 8 2 0 2 4 3 1 0 2 5 9 5 6 4 5 3
----+-------------------------------------------------------------------------
UT | 3 11 12 13 14 19 20 21 22 23 24 25 26 27 28 29 30 31
July 1999
Note:
. this month I continued to adjust the system to record only the strongest
overdense reflections, and at the same time to minimise the strong C 4
TVE1 noise in Barcelona.
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: AM
Recording method: listening by ear
July 1999
Number of meteors heard in one hour interval
| UT
Jul | 09h 10 11 12 13 14 15 16 17 18 19 20
----+-----------------------------------------------
12 | - - - 7 6 6 - - - - 7 9
|
20 | - - 4 12 17 19 18 - - - - -
21 | - 8 13 24 34 8* - - - - - -
22 | - - - - - - - - - - - -
23 | - - - - - - - - - - - -
24 | - - - - - - - - - - - -
25 | - - - 8 16 26 15 - - - - -
26 | - - - - - - - - - - - -
27 | - - - - - - - - - - - -
28 | - - - - - - - - - - - -
29 | - 14 33 30 24 15 7 - - - - -
----+-----------------------------------------------
Jul | 09h 10 11 12 13 14 15 16 17 18 19 20
| UT
Notes:
. no corrections for radiant position made to the counts.
. ( - ) means no observations made.
. * = Interference.
. + = 1/2 hour observation only.
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].
July 1999
Raw counts of reflections with a duration of at least 0.027 s
during one hour interval starting at UT:
Jul | UT
1999 | 20h 21 22 23 00 01 02 03 04 05 06
------+-------------------------------------------------------
1- 2 | 70 86 59 81 58 21 92 170 106 ? ?
2- 3 | 64 81 32 65 10 8 84 ? ? ? ?
3- 4 | ? 118 ? ? 78 80 67 50 31 22 15
4- 5 | 33 70 48 76 87 102 101 129 114 ? ?
5- 6 | ? 94 ? 94 75 10 9 7 5 59 22
6- 7 | 67 75 86 115? 89 100 ? 117 145 ? ?
7- 8 | ? ? ? ? 76 ? 92 102 ? ? ?
8- 9 | ? 72 59 ? 78 98 94 ? 87 ? ?
9-10 | 62 67 103 71 80 68 54 43 38 ? ?
10-11 | 87 61 60 26 18 4 7 8 14 7 5
11-12 | ? ? 32 27 21 35 58 39 66 ? ?
12-13 | ? 13 18 9 13 10 16 16 89 ?
13-14 | ? 71 52 79 77 108 136 137 137 ? ?
14-15 | 85 97 94 131 111 88 125 116 126 ? ?
15-16 |
16-17 | 71 78 84 131 67 37 56 64 86 ? ?
17-18 | 109? 103 100 54 88 85 94 93 ? 35 66
18-19 |
19-20 | ? 99 97 ? 91 93 90 81 91 ? 64
20-21 | 90 62 69 50 100 83 79 91 92 88 100
21-22 | 87 95 84 123 108 114 155? 179? 99 ? 113
22-23 | 79 94 ? 119 112 27 14 79 132 ? ?
23-24 | 74 ? 88 96 155 121 101 119 83 ? ?
24-25 | 74 54 91 105 127 160 137 185 133 100 57
25-26 | 81 ? ? ? 133 121 145 175 108 ? ?
26-27 | 99 118 ? ? 130 173 188 150 119 ? ?
27-28 | 54 111 115 ? 125 150 218 217 203 ? ?
28-29 | 69 ? ? ? 73 144 ? ? 126 ? ?
29-30 |
30-31 | 84 108 164 185 159 222 166 186 48 ?
31-01 |
------+-------------------------------------------------------
1999 | 20h 21 22 23 00 01 02 03 04 05 06
Jul | UT
Raw counts of reflections with a duration of at least 1.000 s
during one hour interval starting at UT:
Jul | UT
1999 | 20h 21 22 23 00 01 02 03 04 05 06
------+--------------------------------------------------------
1- 2 | 17* 28* 8 14 8 2 10 19 25* ? ?
2- 3 | 13* 22* 9* 23* 0 0 20* ? ?
3- 4 | ? 44* ? ? 9 12 10 6 5 7* 1
4- 5 | 2 21* 7 7 12 10 19 31* 36* ? ?
5- 6 | ? 29* ? 35* 6 0 20 0 0 22* 10*
6- 7 | 13 18* 33* 43* 17 10 34* 11 40* ? ?
7- 8 | ? ? ? ? 7 18 19* ? ? ? ?
8- 9 | ? 13 17* ? 21* 13 10 16 34* ? ?
9-10 | 7 7 28* 25* 11 5 4 6 15* ? ?
10-11 | 25* 13* 16* 12* 3 0 1 0 1 1 2*
11-12 | ? ? 22* 8* 1 4 9 9* 19* ? ?
12-13 | ? 2 2 1 3* 1 4* 3 33* ?
13-14 | ? 9 12* 25* 11 24* 21 12 22 ? ?
14-15 | 11 11 9 24 15 16 20 8 30* ? ?
15-16 |
16-17 | 12 13 12 42* 10 3 5 7 16 ? ?
17-18 | 32* 36* 46* 5 17 9 11 8 ? 1 22*
18-19 |
19-20 | 23* 22* 24* 52? 7 12 12 8 21* 27* 28*
20-21 | 25* 9 12 4 19 18* 7 11 14 20* 23*
21-22 | 21* 16 9 32* 12 11 24 27 21* ? 23*
22-23 | 10 14 32 19 6 3 4* 16* 30* ? ?
23-24 | 12 50* 11 20* 32* 20 7 18 21* ? ?
24-25 | 11 9 18 11 14 20 17 38* 10 5 11
25-26 | 30* ? ? 10 20 15 22 45* 34* ? ?
26-27 | 23* 32* 73* ? 16 31 26 19 26* ? ?
27-28 | 13* 14 24* 58* 16 18 53* 35 35 ? ?
28-29 | 17* ? ? ? 49* 37* 39 63* 37* ? ?
29-30 |
30-31 | 9 25* 44* 81* 17 52* 27 39* 24* ?
31-01 |
------+--------------------------------------------------------
1999 | 20h 21 22 23 00 01 02 03 04 05 06
Jul | UT
Notes:
. ? probably affected by sporadic-E, tropo, direct reception.
. a lot of direct reception, mainly during the morning hours.
. * warning for relative high number of long duration reflections,
an indication for potential stream activity.
. local time = UT + 2 hours
Maurice De Meyere
----------------------------------------------------------------------
Location: Astronomical Observatory, University of Ghent, Belgium
(3 42' 32" E, 51 01' 25" N)
Antenna (2x): 4 elements horizontal Yagi, pointed East, elevation= 20 deg
Antenna amplifier: 10 dB gain
smallband 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.
-------------------------------------------------------------
| Jul 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 | 63 63 67 67 89 73 69 70 66 84 36 62 78 74
1 | 64 92 129 97 99 83 123 118 76 68 81 76 72 64 74
2 | 121 71 116 100 126 162 81 77 53 86 85 77 77 92
3 | 107 90 117 106 108 32 110 91 104 86 101
4 | 88 120 85 90 143 24 86 35 96 69 123 81 127
5 | 64 110 83 87 61 35 52 23 54 31 103 88 57
6 | 109 102 57 111 85 69 49 61 88 47
7 | 61 87 119 46 80 47 65 47 50 113 56 71
8 | 61 76 43 95 74 73 54 78 44 114 48 65
9 | 53 86 100 26 76 60 50 47 70 40 68 49 57
10 | 59 113 78 28 51 58 38 38 52 69 36 39 75
11 | 96 63 35 54 55 44 30 48 37 37 28 38
12 | 64 72 31 54 28 28 55 33 38 25 22
13 | 43 66 52 21 26 25 20 35 22 53 16 10
14 | 37 31 37 59 27 31 21 29 41 18 12 23 85
15 | 49 36 42 36 34 34 29 20 23 26
16 | 40 35 33 14 27 24 18 42
17 | 22 24 38 29 20 20 32 19 13 25
18 | 8 46 24 23 32 25 23 19 16 23
19 | 13 65 26 45 22 29 22 23 24 23
20 | 22 27 25 42 37 28 24 24 32 42 35 24
21 | 24 34 22 38 29 27 26 30 38 21 31 43 31 49
22 | 36 41 26 47 35 39 13 27 61 34 30 33 48 50 36
23 | 38 55 59 50 48 59 38 35 54 44 36 36 49 41 41
---+------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---------------------------------------------------------------
| Jul 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 | 73 80 67 90 72 58 67 100 108 112 88 125 101 29 149
1 | 67 70 66 81 86 105 88 109 156 115 109 139 162 116 157 211
2 | 72 99 60 114 98 94 82 152 139 116 110 139 175 185 173 199
3 | 87 128 118 121 157 117 149 136 168 175 233 204
4 | 74 93 81 88 93 110 91 92 120 86 104 130 99 183 151
5 | 94 84 54 84 103 104 105 100 100 54 53 129 80 75 70 98
6 | 88 112 77 74 98 99 112 89 91 66 67 111 94 61 101 65
7 | 69 98 45 89 72 86 70 91 90 63 58 126 80 53 79 47
8 | 59 73 156 65 86 74 82 79 69 77 93 47 77 41 49
9 | 50 54 154 63 72 92 48 65 99 67 46 82 117 47 33
10 | 89 62 100 46 81 77 60 67 54 75 49 54 71 77 74
11 | 34 37 124 48 73 53 55 53 65 25 67 67 65 46
12 | 21 44 72 45 36 43 57 51 43 52 36 38 29 47 49
13 | 33 39 35 47 36 32 41 35 36 28 22 29 41
14 | 26 28 26 42 37 44 45 44 23 41 20 14 17 67
15 | 24 30 24 34 26 34 31 28 53 20 39 27 26
16 | 19 39 25 24 24 27 33 21 17 32 24
17 | 22 26 28 23 33 17 22 23 29 34 40 31
18 | 20 25 43 31 25 24 22 28 35 38 30 35
19 | 25 51 53 49 36 31 47 31 38 28 29 38 59 68
20 | 29 35 37 38 41 38 34 51 44 50 53 51 35 48
21 | 29 35 44 48 49 38 36 56 41 39 58 51 37 57 58 51
22 | 31 53 37 39 42 48 47 62 43 42 50 50 24 55 63 52
23 | 76 64 72 46 47 56 64 74 53 71 58 98 20 49 76 63
---+----------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Notes:
. difficult month, with a lot of interference, which masks even the
normal morning hour peak activity.
Pierre De Groote
---------------------------------------------------------------------------
Observer: Werfried Kuneth
Location: Ferndorf, Austria (13 37' E, 46 45' N)
Antenna: 2 element Yagi, direction southeast, no elevation at 1 m height.
Receiver: IC-706 at 53.76065 MHz, CW-R mode, 500 Hz CW filter, fast AGC.
Transmitters: 1) 30 kW TV video carrier from Bari, Italy, distance 700 km,
direction south and 2) a 30 kW TV video carrier from Sicilia,
Italy, distance 900 km, south. The total echo power of both
transmitters is processed into same 40 Hz virtual
receiver channel.
Observing method: automatic setup using FFTDSP42t software by AF9Y to record
the audio signal. 20 channels of 2 Hz width are used for meteor
identification, another channel is used for automatic
interference rejection. Sampling interval: one 4096
point FFT every 0.5 seconds.
The monthly results showing the total reflective time are now also
available at http://www.qsldot net/oe8fnk this includes now also Es, FAI
and fireball statistics.
The meteor counts below are corrected for a full hour observing time. If
the recording duration is 20-40 minutes, a dot is shown after the value, to
show the reduced accuracy. Results for less than 20 min. observing time are
excluded.
Counts of reflections longer than 6.5 seconds, assumed
to be overdense.
| Jul 1999
UT| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
---+----------------------------------------------------------------
0| 4 4. 2 6 3 1 2. 4 1 5 4 5 2 2
1| 2 7. 5 4 5 0 6 2 5 3 11 8 7
2| 2 10. 4 9 3 5 8 3 3 4 6 9
3| 6 6 7 12 3 3 10 9 3 9 8 5 6 1
4| 6 12. 8 9 5 3 4 11 4 10 4 5 7 7 7
5| 5 3. 16 6 7 4 4 10 4 6 5 5 5 10 2.
6| 5 3. 4 17 9 5. 6 11. 2 5. 3 6 11 4 3
7| 14 8 8 4 7 3 2. 6 7 3 1 3 2
8| 6 6. 13 5 8. 5. 3 7 4 7 6 4 0.
9| 12 11. 8 8 9 4 10 5. 3 0. 6. 9 1
10| 10 5 3 0. 0. 4 9. 2. 1 4 0
11| 20 4 3. 8 4 9 0. 2 5 1
12| 13 4 4 6 4 3. 4. 0 5 2
13| 9 1 4 8 5 3 0 3 3
14| 8 4 3 5 0. 4 2 3 0 2 3
15| 2 1 2. 1 2 0 0 0 1 1 1
16| 3 1 3 2. 0 0 2 0 0.
17| 0 0 3. 2 0 2. 2
18| 0 1 1 0 0. 1 2. 1 0 0. 1 0.
19| 0 0 0 1 2 1 0. 0 0 0
20| 5 1 2. 1 2 1 2. 2 3. 1 0
21| 5 4 4 3 0. 2 0 2 9. 1 4 2 1 0
22| 2 6 2 5 5 5 2 6 3. 2 6 3
23| 5 7 7 4 3 1 5 2 2 3 3 4 0 1
---+----------------------------------------------------------------
UT| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
| Jul 1999
| Jul 1999
UT| 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---+-----------------------------------------------------------
0| 4 5 6 4 5 5 9 8 7 13. 10 10 19
1| 4 5 5 4 5 3 9 8 13 10 14 13 18 22
2| 6 11 7 5 6 10 7 6 11 13 15 9 24 22
3| 8 4 15 5 5 10 10 13 6 9 21 12 14 29
4| 2 4 11 3 5 4 1 5 9 12 6 10 6 9 10
5| 4 1 13 3 6 6 6 12 12 7 8 10 10 6 8
6| 11 3 3 8. 3 6 4 7 8 3 6 7 14 9
7| 3 6 6 7. 2 6 4 2. 3 2 1 4 4 4
8| 3 3 6 4 5. 5. 3 3 1 5 2 5 1 3 5
9| 3 0 10 2 3 4 3 3 2 0 5.
10| 3 4 0 2 2 0 3 2 4 3 0 1 0.
11| 2 0 4 0 0. 2 1 0. 0 5 4
12| 4 1 2 6 0. 1 3 0 4 1 2 3 3
13| 2 1 4 0 1 4 4. 2. 1 2 3
14| 1 3 1 0 4. 0. 1 1 0. 0. 0 1 1
15| 1 1 2. 1 2 0 0 2 0. 1 0 3
16| 0 1 0. 2 0. 1 0. 1
17| 0 0 1 5. 1 0 0 4
18| 0 0 0 0. 2 1 0 0 2
19| 1 0. 3 0 3. 1 1 0 0 3 4 3 1
20| 0. 2 1 0. 3 2 1 3 0 2 3. 0 2 4 3
21| 4 4 2 2 3 4 0 2 1 5 2 7 4 5 3
22| 0. 1 2 3 2 4 6 4 9 3 5 7 13 10
23| 0 6 4 4 7 5 6 6 12 10 15 8 13 9
---+-----------------------------------------------------------
UT| 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
| Jul 1999
Propagation overview for July 1999
E : sporadic-E or E-layer propagation
F : FAI (field aligned irregularity)
- : propagation only via meteor echoes.
(blank) : no data available
| Jul 1999
UT| 1 2 3 4 5 6 7 8 910111213141516171819202122232425262728293031
---+--------------------------------------------------------------
0| - - - - - - - E - - - - - - - - E - - - - - - - - - - - - -
1| - - - - - - - E - - - E - - - - - - - - - - - - - - - - - -
2| - E - - - - - - - E - E - - E - - - - - - - - - - - - - - -
3| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
4| - E - - E - - - - E - - - - E - - - - - - - - - - - - - - -
5| - E - - - - - - - - - - - - E E - - - E - - - - - - - - - -
6| - E - - - E - E - - - - - - - E E - - E - - - - E - - - - -
7| - E - - - E - E - - E E - - E - - E E - - - - - - - - - -
8| - E - - E E - E - - E E E E E - E - E E - - - - - E - - -
9| - E - - E - - E - E E E E E E - E - E - - - - - - E - - -
10| - - - E E - E E E E E - - E E E E - - - - E - - - E - - -
11| - - - E - E - E E E E - - - - E E - E - - E - - - E - - -
12| - - E - - E - E E E E - - - - - - - E - E E - E E - - - -
13| - - E E - E - - - - E - - - - - E - - - E E - E E E - - -
14| - - - E - E - - - E - E - - - - E - - - - F E - E E E - - -
15| - - - E - E - - - E E - - E - - E - E E - - E E - - - - - -
16| - - - E E E E E - E E - - E - E E - E E - E E E E E E - - -
17| - - - - E E E E E - E E E - E E E E - E - - - E E E E - - -
18| - - - - E E - E - - E E E - E E E E - E - E E - - E E - - -
19| - - - - E - - E E - E E F F E F - E - E - E E E - - E E - - -
20| E - - F E - - E E F E E E - E - F - - - - - - - - - - - - - -
21| E - - - E - - E - - E E F - E - E - - - - - - - - - - - - - -
22| E - - - - - - E - - E - F - - - E - - - - - - - E - - - - - -
23| E - - - - - - E - - E - - - - - E - - - - - - - - - - - - - -
---+--------------------------------------------------------------
UT| 1 2 3 4 5 6 7 8 910111213141516171819202122232425262728293031
| Jul 1999
Notes:
. an unexpected meteor outburst occurred during daytime on July 2,
at 7-15h UT. The radiant cannot be determined from the echoes.
From the known active radiants only the June Bootids have been
over the horizon.
. the Pegasids showed up quite well on July 9, while not registered
in 1997 and 1998.
. the S. Delta Aquarids showed good activity for several days.
see also http://www.qsldot net/oe8fnk for the monthly graphs.
. every day from July 3 to July 28 showed sporadic-E propagation.
Werfried Kuneth
---------------------------------------------------------------------------
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
June 1999
Jun| 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 | 13 5 5 7 8 8 6 5 7 8 7 8 6 3 7 7 13 11 8 6 6 14 17 6
2 | 10 3 3 8 13 6 4 3 12 7 9 6 7 13 16 27 14 10 12 8 6 4 11 16
3 | 7 8 3 7 17 4 7 9 9 6 7 7 16 6 18 17 18 8 4 14 10 11 18 12
4 | 9 3 1 12 10 8 7 12 8 17 17 25 14 13 18 20 13 13 11 13 9 19 21 14
5 | 16 11 8 6 14 9 4 6 7 5 8 13 16 17 22 16 16 15 14 16 14 15 18 13
6 | 10 10 3 7 6 12 10 6 8 7 12 10 21 15 21 29 9 11 6 16 16 16 17 17
7 | 10 6 13 23 4 11 9 7 6 10 13 13 25 21 39 35 38 11 17 11 14 6 23 18
8 | 5 10 9 11 15 20 8 10 6 17 12 27 12 16 47 51 28 18 7 12 21 24 19 18
9 | 26 15 14 10 13 3 9 7 9 6 8 22 21 23 20 57 26 13 10 8 13 12 19 15
10 | 16 11 9 13 9 13 9 6 11 10 14 19 19 15 31 25 10 17 6 5 64155 73 22
11 | 13 8 4 10 20 8 10 18 7 10 16 14 18 24 18 34 33 25 16 15 15 35 64 63
12 | 19 19 14 24 25 20 12 15 8 10 7 11 26 23 30 29 16 10 13 35113105 35 8
13 | 16 14 12 14 9 7 8 5 4 11 9 13 16 22 22 28 24 15 13 18 14 19 14 31
14 | 15 6 16 15 6 15 4 8 7 13 7 16 12 20 25 37 23 13 14 10 4 26 20 13
15 | 14 16 10 10 17 4 6 9 5 7 3 8 10 15 18 17 13 16 44136 63 26 32 30
16 | 3 15 8 9 9 7 8 9 6 3 9 6 8 16 23 27 27 15 8 10 12 38101 35
17 | 5 7 5 14 12 5 10 13 17 4 12 5 7 9 9 15 12 12 10 14 9 15 17 13
18 | 80 91 91 5 5 7 3 5 8 8 4 9 10 8 10 25 15 12 9 11 16 26 32 56
19 | 12 19 23 9 10 5 7 7 9 7 10 8 18 18 12 25 27 19 18 8 12 35135 94
20 | 16 6 9 14 8 5 7 13 6 5 9 11 6 10 9 28 25 19 19 9 18 14 15 19
21 | 15 14 8 9 11 8 10 10 15 15 3 12 10 19 18 28 20 18 21 5 12 54 30 40
22 | 19 24 17 12 10 9 9 11 10 14 13 10 8 19 13 28 18 19 9 7 33 18 28 10
23 | 35 35 24 19 31 25 17 18 9 10 10 10 13 16 17 22 19 19 6 10 14 12 11 12
24 | 36 26 18 23 26 15 8 6 10 13 14 9 14 18 19 28 19 17 13 9 84150 70 11
25 | 8 9 10 14 10 8 9 13 7 14 13 7 13 12 16 25 24 21 37 55 41 30 20 21
26 | 17 18 6 14 15 7 5 16 11 11 38 17 20 17 24 26 14 18 13 9 10 20 21 10
27 | 23 13 3 8 10 3 11 11 8 7 5 10 19 10 20 34 26 16 13 10 7 15 19 13
28 | 8 8 7 16 6 15 13 10 6 7 2 13 9 19 15 24 19 17 3 9 7 7 13 12
29 | 16 14 16 18 19 12 14 12 12 13 17 12 20 18 17 29 35 15 15 16 15 18 22 18
30 | 15 14 16 13 15 13 10 7 3 14 17 18 12 1 10 0 16 14 19 17 17 24 20 17
----+------------------------------------------------------------------------
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
Jun| UT
Signal duration distribution for the above period
Duration (s) Number
< 0.1 3496
0.1 to 0.3 3290
0.3 to 1 2155
1 to 3 1524
3 to 10 1048
10 to 30 186
> 30 15
Note:
. lightning noise on June 12, 16 and 24. Some of the other peaks during
local afternoon might be lightning noise to.
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
Jul|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
Jul|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
UT
---+--------------------------------------------------------------------------
1|27 31 43 34 41 44 63 50 32 31 19 27 37 e e e e e e e 13 12 29@30
2|44 34 32 38 43 37 49 40 27 31 24 30 28 32 25 18 12 12 6 12 20 29 30@26
3|39 31 33 35 53 53 44 47 34 27 24 29 42 25 24 17@11@17 14 12 17 23 33@42
4|31 55 42 45 51 58 45 54 45 e e e 21 28 24 24 27 15 14 14 21 21 23@38
5|49 48 59 54 60 52 50 46 40 34 17 35 29 53 20@24 35 15 14 19 24 27 44@38
6|35 43 50 41 57 50 67 47 41 34 28 24 23 24 27 27 11 19 14 13 19 31 24@50
7|39 51 47 70 58 55 74 50 41 27 20 28 38 39 28@30 e@13 8 13 13 32 39@43
8|38 52 52 40 59 59 68 50 47 42@30 35 35 19 21 20 21 17 10 17 20 38 40@38
9|47 46 60 63 50 58 67 59 50 31 n 26 36 33 24 23 20 21 10 18 14 36 39@45
10|40 37 37 46 60 67 51 52 28@23@21 19 32 24@21@15 20 18 17 18 16 34 37 --
11|34 41 37 60 56 67 57 36 31@27@26 23 34 e e e e e e 18 19 36 30@37
12|53 35 53 48 43 62 54 57 50 29 18 e 32 31 30 19 19 13 5 16 16 26 41@36
13|42 45 43 44 61 48@50 46 39 46 24 26 23 37 23 17 8 14 8 18 13 27 48@39
14|42 46 35 35 53 52 40 40 31 37 e e e 21 26 25 19 12 19 16 20 37 31@39
15|45 45 44 36 57 56 57 54 33 24 27 28@18 17 17 25 15 11 9 12 15 29 40@51
16|53 46 49 36 40 56 46 44 e e e 23 22 28 20 24 15 12 11 11 11 25 37@43
17|40 59 61 6/ 60 56 57 48 39 23 18 e 23 20 23 16@17 e 15 7 10 46 41 --
18|55 53 55 56 63 66 68 45 e e e 20 19 37 25 22 21 13 18 15 24 22 43@49
19|48 64 56 49 53 54 69 50@36 e e e e e e 11 21 20 25 17 15 34 39@52
20|55 45 53 63 55 48 58 43 41 33 31 29 23 33 31 20 29 13 11 14 24 29 45@47
21|51 40 52 67 66 73 59 47 50 26 e e e@20@19 11 e e e@10 19 41 35@62
22|65 71 61 72 67 57 52 37 52 43 24 27 30 26 21 23 14 9 22 19 18 43 51@55
23|60 80 64 55 75 78 66@45 e f f f@24 21 17 13 19 12 15 15 19 31 45@65
24|73 73 70 64 82 81 74 e e e e e e@23 23@24 17 20 15 16 38 44 52@50
25|78 71 82 80 85 77 56 60 57 27 18 17 15 e e e 7 12 13 7 22 48 71@76
26|71 80 80 64 80 74 75 e 35 34 28 31 21 37 20 20 22 15 19 19 34 39 60@70
27|91 94 90 78 66 62 58 43 e e e e e e e e e 20 12 14 20 29 61@69
28|77 77 81 80 83 78 59 47 41 24 26 19 17 29 19 18 17@27 @9 24 24 26 61@74
29|94 88 80 64 76 66 77 43 39 27@28 22 15 28 24 37 e 12 10 14 24 35 51@47
30|86 87104 82 93 83 62 34 34 29 19 25 31 28 21 20 17 17 17 21 27 42 78@78
31|79 98 79 83 73 76 46 32 41 e e e e@28 e 18 13 19 12 18 23 39 53@66
--+--------------------------------------------------------------------------
Jul|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
UT Jul|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22
23JST 1999
Echoes with duration > 5 s
1999
Jul|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
Jul|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
UT
---+--------------------------------------------------------------------------
1| 2 1 3 1 1 4 7 4 2 3 1 3 6 1 1
2| 4 1 2 2 3 2 2 2 4 2 1 5 1 2 2 1 1
3| 2 1 4 1 5 5 4 7 2 1 1 1 2 1 1
4| 2 1 4 3 2 4 1 2 1 1 1 4
5| 3 3 13 5 6 2 1 2 1 2 1 2 1 2 1 1 3 1
6| 1 2 6 1 4 5 6 3 1 4 2 1 1 1 1 1 1 1 3
7| 1 5 2 3 6 4 5 4 3 4 1 1 3 2 2 1 4
8| 1 1 1 4 8 11 7 2 5 2 3 2 1 1 1 2 2 2 1
9| 2 6 6 7 6 9 5 10 6 2 4 3 6 1 2 1 2 1 5
10| 1 4 2 1 6 4 6 2 1 1 1 1 1 1 1 2 --
11| 2 1 3 2 3 6 1 2
12| 2 3 5 7 5 4 7 3 1 1 4 3 1
13| 2 2 5 1 1 7 2 6 3 2 2 2 1 2 2
14| 3 2 2 2 5 3 3 3 1 1 1 2 2 3
15| 4 4 1 5 8 5 6 8 2 1 1 4 1 1
16| 3 7 1 5 7 5 1 1 2 1 3
17| 1 2 6 6 6 6 3 4 2 1 1 1 1 1
18| 3 1 7 1 6 4 4 1 5 1 1 1 1 2
19| 3 4 2 1 10 3 4 1 1 2
20| 4 1 3 2 2 3 1 2 2 1 3 1 1 1 1 2 1 1 1 2 3
21| 1 1 5 2 6 2 7 2 2 1 1 2 4
22| 2 2 1 3 5 1 4 4 1 1 1 2 1 1 1 1 5 4
23| 4 4 8 6 5 5 4 1 1 1 1 1 1 4
24| 1 6 1 3 6 7 2 1 1 2 @6
25| 8 4 4 9 7 2 1 5 1 1 1 1 1 2 3
26| 5 7 3 4 9 5 10 2 5 1 1 2 1 1 2 3
27| 5 11 5 5 8 2 8 3 1 2 2 6
28| 2 9 7 3 10 6 3 3 5 1 1 2 1 1 1 3 1
29| 8 11 7 4 9 2 5 2 1 2 1 3 2 1 1 1 2 6 3
30| 9 10 11 13 5 5 5 5 6 2 2 1 2 2 2 2 1 1 3 5
31| 8 12 12 16 4 15 4 1 1 1 4 3 7
---+-------------------------------------------------------------------------
- Jul|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13
14 UT Jul|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
22 23JST 1999
Daily rate of long echoes (T > 20 s)
1999
July 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
--------------------------------------------------------------------
Count 1 2 5 0 8 5 3 2 4 5 2 6 3 3 6 4
July 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
----------------------------------------------------------------
Count 3 3 4 4 2 4 2 1 2 3 6 5 12 11 12
Notes:
-: 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.
JST = UT + 9 hours
Sadao Okamoto
---------------------------------------------------------------------------
Observer: Chikara Shimoda
Location: Asahi, Nagano, Japan (137 51' E, 36 07' N)
Frequency: 81.4 MHz
Transmitter Location: FM-Japan 81.3 MHz, 10 kW, distance 180 km.
Antenna: 5 element Yagi directed to the zenith.
Receiver: AM-FM Tuner (TRIO KT-1100)
Observing method: Meteor echoes output from center-tuning meter were
recorded on a pen-recorder chart.
July 1999
Jul | UT
1999 | 11h 12 13 14 15 16 17 18 19 20 21 22 | *(1) **(2)
------+-------------------------------------------------+-----------
1 | 31 33 36 35 32 39 37 46 31 | 33.3 36.7
2 | 15 21 30 31 32 41 40 39 36 43 49 42 | 28.3 41.5
3 | 14 26 27 29 38 | 26.8
4 | 30 30 32 26 | 29.5
5 | 21 21 25 26 36 26 28 36 44 31 35 28 | 25.8 33.7
6 | 28 36 38 34 47 24 34 18 17 | 34.0 29.0
7 | 10 11 13 20 26 24 26 32 32 26 28 15 | 17.3 26.5
8 | 10 14 16 21 34 34 | 21.5
9 | 20 38 27 33 29 28 33 33 27 21 | 29.5 28.5
10 | 16 13 25 29 33 35 25 22 27 36 23 | 25.2 26.6
11 | 17 10 12 28 34 24 20 29 28 26 31 24 | 20.8 26.3
12 | 11 24 25 41 32 24 28 33 31 28 | 26.2 30.0
13 | 14 16 29 34 40 32 38 28 30 36 38 29 | 27.5 33.2
14 | 17 16 32 35 30 23 | 25.5
15 | 30 51 34 24 37 25 30 27 19 | 38.3 27.0
16 | 9 11 22 47 41 34 40 30 29 36 21 20 | 27.3 29.3
17 | 11 15 32 31 35 34 | 26.3
18 | 14 20 30 38 32 41 31 37 33 34 29 21 | 29.2 30.8
19 | 15 16 18 26 38 38 32 29 19 | 25.2 26.7
20 | 25 16 19 41 35 39 32 33 32 31 27 | 27.2 32.3
21 | 17 22 30 37 39 49 41 41 40 37 39 23 | 32.3 36.8
22 | 18 23 45 31 51 45 47 38 27 23 25 31 | 35.5 31.8
23 | |
24 | 30 37 | 33.5
25 | 13 18 35 53 53 43 58 53 38 42 32 21 | 35.8 40.7
26 | 13 21 27 36 54 55 40 40 47 38 31 23 | 34.3 36.5
27 | 15 40 48 51 53 48 42 31 24 | 41.4 36.3
28 | 13 16 41 66 67 67 58 59 45 46 34 21 | 45.0 43.8
29 | 14 21 48 52 62 58 53 57 37 34 36 14 | 42.5 38.5
30 | 15 28 41 46 56 | 37.2
31 | |
------+-------------------------------------------------+-----------
1999 | 11h 12 13 14 15 16 17 18 19 20 21 22 | *(1) **(2)
Jul | UT
Notes:
* (1) average hourly rate between 11h-17h UT
**(2) average hourly rate between 17h-23h UT
. local time = JST = UT + 9 hours
Chikara Shimoda
---------------------------------------------------------------------------
Observer: Garfield Tsao (BM2EQB)
Location: LonTan Observatory
LonTan, TauYan, Taiwan (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 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.
July 1999
1999 |00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Jul |16h17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
-----+-------------------------------------------------------------------------
3 | 3 3 E E E E E
4 | E 7 8 20 28 20 E E 20 E E
11 | 12 8 E 4 E 10 12 23
12 |34 23 30 44 44 42 E 37 20 E E 19 6
17 | E 15 8 9 E E E 34 E
18 |28 32 E E 43 38 21 21 29 10 E 6 5 8
23 | 5 E E 8 9
24 | E 11 9 11 8 6 7 E E E E 2 3 E 1 1 1 4 2 17 24 21 35
25 |26 29 23 17 17 21 E E 18 E E
31 | 4 9 19 E E E E E
-----+-----------------------------------------------------------------------
--
Jul |16h17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
1999 |00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Note:
. "E" mark= E layer propagation and E layer sporadic of reflection.
Garfield Tsao
2. ANNOUNCEMENT
Pierre Terrier communicates that METEOR v 3.0 is now available on his
new Web site:
http://membres.tripod.fr/meteor_astro_elec
The problem remains the treatment of the enormous amount of data collected
by METEOR.
A colleague of his writes a program for the automatic analysis of the
files. Another one prepares a presentation program, similar to the one
of the University of Ghent (colored bar chart).
3. 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).
4. CONTRIBUTORS / USEFUL ADDRESSES
Enric Fraile Algeciras (EA3BTZ)
C/ Moianes 19-21 Esc. A 6º 1ª, 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
Sadao Okamoto
E-mail: okamoto@jim.sugiyama-u.ac.jp
Chikara Shimoda
178, Hario, Asahi-mura, Higashitikuma-gun Nagano, 390-1103, Japan
Fax: +81-263-99-3532
E-mail: c-shimo@mtd.biglobe.ne.jp
JN Homepage http://www2s.biglobe.ne.jp/~JN-/index.html
Chris Steyaert, VVS
Kruisven 66, B-2400 Mol, Belgium
tel: +32 (14) 31 51 04
E-mail: steyaert@vvsdot be
Compuserve: 72650,3513
Pierre Terrier
Canet (close to Montpellier), France
E-mail: pierre.terrier@wanadoo.fr
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 (RMOB9907) 7 August 1999
--
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