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(meteorobs) Radio Meteor Obs. Bull. April 2002 Lyrids
Radio Meteor Observation Bulletin No. 105 www.rmob.org April 2002
Observer: Enric Fraile Algeciras
Location: Paseo Bonanova, 8 Barcelona (02 07' E, 41 24' N)
Frequency: 48.24715 MHz
Transmitter Location: Biedenkopf C2 TV, Video Frequency 48.250 MHz,
ERP 100 kW, Azimuth 90 +/-65
Antenna: 3 element Yagi 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: own written software "MSD" with sound card.
| April 2002
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 33 30 26 29 12 16
1 | 27 29 27 27 8 9
2 | 28 33 24 24 17 8
3 | 37 44 33 29 28 25
4 | 32 39 55 39 31 25
5 | 40 48 33 49 33 36
6 | 48 60 38 39 30 19
7 | 47 51 49 48 17 34
8 | 55 56 49 28 30 27
9 | 60 52 44 40 21 31
10 | 42 37 39 42 20 26
11 | 29 30 35 34 15 25
12 | 39 66 41 26 18 22
13 | 51 46 49 45 26 27
14 | 50 47 34 36 40 37
15 | 39 29 27 17 25 20
16 | 29 24 23 25 7 22
17 | 19 18 14 16 9 13 3
18 | 18 15 13 27 14 13 11
19 | 20 28 17 22 9 15 5
20 | 27 23 18 30 13 17 18
21 | 32 19 23 26 19 13 14
22 | 25 33 24 32 13 13 18
23 | 29 26 30 32 10 13 13
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2002
| April 2002
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 7 27 20 14 22 44 35 18 15 20 17 21 19 16 22
1 | 12 24 15 36 25 33 27 20 21 19 30 28 15 22 16
2 | 13 17 20 20 27 28 26 39 18 38 24 22 21 18 28
3 | 16 38 30 27 20 35 29 37 33 39 31 43 36 35 55
4 | 19 38 32 31 47 34 43 41 42 46 35 58 37 45 46
5 | 22 56 36 27 46 64 65 47 45 38 39 57 48 54 45
6 | 44 55 31 31 56 52 60 41 50 51 55 58 71 54 55
7 | 29 50 35 34 67 56 59 70 52 70 74 67 61 58 64
8 | 43 54 34 49 65 40 62 63 49 44 63 61 58 42 57
9 | 35 33 39 31 47 39 52 33 55 53 48 42 53 38 45
10 | 51 17 30 35 34 33 40 34 51 24 40 50 46 39 32
11 | 37 26 28 35 35 43 36 46 39 32 29 39 36 33 51
12 | 54 20 40 49 52 51 43 47 49 55 44 62 39 45 52
13 | 41 43 40 56 69 64 48 59 65 65 65 70 68 47 71
14 | 59 46 37 45 49 51 47 61 44 60 59 59 71 60 48
15 | 26 28 35 34 37 29 32 45 19 37 35 42 44 34 50
16 | 29 30 19 25 30 22 26 31 21 33 15 25 28 27 30
17 | 22 12 14 20 19 14 16 12 23 25 28 21 37 19 26
18 | 13 17 17 23 26 19 11 17 16 8 18 21 9 19 17
19 | 17 7 21 24 17 17 5 9 11 14 26 16 22 13 21
20 | 14 15 22 15 14 19 22 25 22 27 16 27 17 23 27
21 | 30 23 22 24 24 18 22 23 25 27 32 29 26 36 20
22 | 22 19 28 22 26 37 28 23 14 23 30 28 32 19 20
23 | 26 27 21 24 24 40 33 24 21 19 28 28 22 26 27
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2002
Notes:
. ? local interference or propagation opening
. F possible F.A.I. or other propagation opening
Enric Fraile Algeciras
---------------------------------------------------------------------------
Observer: Michael Boschat
Location: Halifax, Canada (63 36'W, 44 39'N, 58 meters above sea level)
Listening Frequency: 83.24 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
April 2002
Number of meteors heard in one hour interval
| UT
Apr | 10h 11 12 13 14 15 16
----+---------------------------
3 | - - - - - - -
4 | - - 19 - - 13 16
5 | - 10 34 21 16 38 33
6 | - - - 15 10 - -
7 | - - 14 - - - -
8 | - - - - - - -
9 | - 25 11* - - - -
10 | - - 12 20 32 10 -
13 | - 18 12 11 - - -
14 | - - - - - - -
15 | - 21 16 43 20 - -
20 | - 30 18 23 - - -
21 | - - - - - - -
22 | 30 32 24 - - - -
23 | 10 20 12 38 - - -
24 | - 31 30 38 27 - -
25 | - - 30 21 - - -
26 | - - 33 19 - - -
29 | - 43 34 32 - - -
30 | - 45 42 41 38 - -
----+---------------------------
Apr | 10h 11 12 13 14 15 16
| UT
Notes:
. no corrections for radiant position made to the counts.
. ( - ) means no observations made.
. * = Interference
. + = Listened for 30 minutes only.
Mike Boschat
---------------------------------------------------------------------------
Observer: Maurice De Meyere
Location: Deurle, Belgium (3 37' E, 51 00' N)
Frequency: 66.29 MHz since July 2001
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 Ghent University format (Prometeos), and are
available for further analysis. Reduction software for DOS and
Windows available].
April 2002
Raw counts of reflections with a duration of at least 0.027 s
during one hour interval starting at UT:
Apr | UT
2002 | 00h 01 02 03 04 05 06 07 | 20h 21 22 23
------+-------------------------------------------------------------
1 | 44 9 14 36 38 55 54 44 | 16 8 8
2 | 7 7 14 28 43 30 52 42 | 6 7 7
3 | 9 7 14 28 15 35 38 40 | 12 4 4
4 | 4 8 14 32 41 42 61 51 | 13 13 8
5 | 4 7 12 21 29 33 34 42 | 10 6 3
6 | 7 4 16 33 26 34 44 63 | 12 4 6
7 | 3 9 2 17 48 37 35 40 | 7 13 9
8 | 4 6 12 27 33 36 45 35 | 9 10 7
9 | 5 3 12 69 37 36 82 70 | 27 18 12
10 | 14 9 10 14 50 34 123 60 | 15 11 7
11 | 7 6 15 21 44 64 56 44 | 13 13 15
12 | 9 8 7 44 33 44 37 54 |
13 | | 17 15 9
14 | 17 18 17 22 32 48 50 79 | 11 15 22
15 | 18 16 11 52 65 58 50 33 | 19 20 7
16 | 8 14 20 33 37 65 55 33 | 53 15 22
17 | 12 10 12 25 35 40 53 36 | 22 14 3
18 | 7 11 5 17 32 30 37 51 | 12 6 2
19 | 12 5 6 29 24 31 49 - | 19 23 8
20 | 13 10 10 27 31 42 28 61 | 12 11 14
21 | 4 6 10 9 59 106 58 91 | 31 14 12
22 | 12 5 12 55 58 152 106 84 | 50 31 9
23 | 8 4 8 47 46 69 89 90 | 5 8 6
24 | 10 15 4 25 41 76 57 47 | 15 6 5
25 | 8 3 6 17 25 30 78 29 | 11 12 8
26 | 2 5 18 31 66 66 67 47 | 24 22 15
27 | 9 9 27 36 49 89 48 47 | 16 16 26
28 | 3 9 8 18 57 62 75 54 | 13 12 6
29 | 10 8 16 35 39 76 89 50 | 16 8 19
30 | 6 6 8 52 45 51 91 50 | 10 9 10
------+-------------------------------------------------------------
2002 | 00h 01 02 03 04 05 06 07 | 20h 21 22 23
Apr | UT
Raw counts of reflections with a duration of at least 1.00 s
during one hour interval starting at UT:
Apr | UT
2002 | 00h 01 02 03 04 05 06 07 | 20h 21 22 23
------+-------------------------------------------------------------
1 | 17* 1 2 2 2 4 2 5 | 4* 2* 1
2 | 1 0 0 6* 3 3 8 7 | 2* 1 3*
3 | 1 1 2 3 0 4 1 3 | 2 3* 1*
4 | 1* 0 2 1 2 4 2 3 | 1 3* 1
5 | 0 0 1 6* 2 1 2 4 | 1 2* 0
6 | 2* 0 0 7* 3 4 2 12 | 2 0 1
7 | 0 2* 0 2 10* 9* 3 4 | 1 3* 0
8 | 1- 0 1 3 4 6 9 4 | 2* 1 0
9 | 0 1* 2 16* 3 4 10 11 | 4* 5 0
10 | 4* 1 3* 1 11* 2 23 18* | 2 1 1
11 | 2* 2* 3 2 4 11 5 1 | 3* 1 3
12 | 1 4* 0 7 2 2 1 6 |
13 | | 1 4* 0
14 | 2 5* 2 2 2 14* 3 20* | 1 2 2
15 | 4* 2 2 6 11 8 11* 5 | 2 4 0
16 | 2* 2 2 0 4 5 8 4 | 32* 2 3
17 | 2 1 0 4 4 5 10 3 | 6* 1 0
18 | 0 4* 1 0 2 1 1 9 | 2 1 1*
19 | 1 0 1 4 2 1 7 - | 3 5* 0
20 | 1 1 1 3 6 6 1 4 | 3* 1 3*
21 | 0 0 1 1 11 17 10 14 | 10* 0 1
22 | 1 1 2 10 3 29 16 12 | 16* 13* 1
23 | 2* 0 0 8 4 12 13 21* | 1 0 0
24 | 5* 2 10 5 3 10 6 4 | 3 1 1
25 | 2* 10 0 1 4 1 13 4 | 1 2 1
26 | 0 0 2 3 7 5 1 3 | 4 3 4*
27 | 2* 4* 5 5 2 7 7 3 | 3 5* 9*
28 | 1* 1 3* 4* 7 5 9 2 | 2 1 1
30 | 0 1 0 15* 0 3 9 3 | 4* 1 3
------+-------------------------------------------------------------
2002 | 00h 01 02 03 04 05 06 07 | 20h 21 22 23
Apr | UT
Notes:
. blank = no observation
. ? = possibly affected by Es, interference
. local time = UT + 2 hour
. * warning for relative high number of long duration reflections,
an indication for potential stream activity.
Maurice De Meyere
----------------------------------------------------------------------
Location: Astronomical Observatory, Ghent University, 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.
-------------------------------------------------------------
| Apr 2002 | 10x % reflec. time | horiz: day | vert: time UT|
----------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+------------------------------------------------------------
0h| 6 4 5 4 9 5 2 4 2 3 7 4 2 6 3
1 | 6 5 6 6 6 10 4 2 3 3 4 3 6 5 7
2 | 22 16 7 13 12 5 6 6 17 6 6 14 5 7 9
3 | 22 9 9 24 35 12 23 8 10 20 10 12 12 20 14
4 | 19 10 15 16 15 7 38 14 11 3 16 12 16 21 16
5 | 18 30 17 33 20 6 8 30 28 21 12 9 10 22 21
6 | 23 33 35 14 54 6 10 13 65 12 16 15 29 11 11
7 | 32 16 37 12 27 21 13 12 22 14 14 25 15 20 12
8 | 26 11 25 35 35 27 15 32 12 16 8 22 19 20 15
9 | 33 25 18 55 15 14 13 22 14 21 19 9 17 26 12
10 | 45 19 41 28 23 11 18 12 19 9 11 11 33 14 23
11 | 20 17 21 15 22 14 9 13 16 17 7 15 8 18 15
12 | 21 13 18 12 17 10 7 6 9 8 8 11 9 10 7
13 | 10 7 10 10 11 14 9 8 8 7 7 11 19 7 6
14 | 7 19 3 13 3 3 8 1 3 2 4 3 9 6 3
15 | 7 2 6 4 4 6 3 3 3 2 5 3 7 5 4
16 | 4 14 4 8 2 3 3 9 11 4 2 2 3 1 7
17 | 3 3 5 3 3 5 2 2 3 5 4 3 4 2 2
18 | 4 4 3 4 3 7 4 3 2 2 4 31 7 5 3
19 | 9 9 7 4 4 4 2 3 4 1 2 2 4 4 4
20 | 13 7 8 8 3 3 4 5 2 6 3 3 3 3 10
21 | 6 4 6 9 5 10 3 6 6 7 2 8 4 5 6
22 | 4 5 4 2 3 3 2 2 1 0 2 2 2 2 2
23 | 3 4 5 6 3 2 0 2 2 2 4 2 3 5 3
---+------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
-------------------------------------------------------------
| Apr 2002 | 10x % reflec. time | horiz: day | vert: time UT|
----------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+------------------------------------------------------------
0h| 4 4 10 3 3 15 8 10 8 4 4 7 6 3 4
1 | 6 4 3 4 2 15 8 5 3 6 4 12 6 8 4
2 | 3 11 6 6 6 12 38 19 10 5 11 12 12 7 18
3 | 12 16 7 11 12 37 76 44 30 10 26 14 22 15 14
4 | 32 17 7 16 9 47 124 71 42 10 23 13 22 18 15
5 | 9 47 11 18 9 36 83 68 26 36 16 32 30 18 38
6 | 18 22 13 34 51 51 73 61 22 13 31 33 31 28 27
7 | 24 18 16 24 32 40 46 38 12 25 9 24 28 33 24
8 | 25 20 21 18 35 33 63 40 16 18 16 35 31 40 21
9 | 30 9 25 11 34 20 53 23 19 24 21 37 22 19 17
10 | 42 10 17 13 17 20 23 30 23 23 26 55 15 19 15
11 | 21 9 11 26 12 12 42 18 10 17 18 30 21 14 33
12 | 9 18 15 22 14 18 11 11 15 13 58 21 19 6
13 | 26 5 5 11 8 14 23 10 18 13 11 30 15 18 6
14 | 6 4 6 30 7 6 7 6 5 12 16 10 17 8 4
15 | 4 2 5 1 7 4 4 5 4 9 14 7 16 29 27
16 | 10 1 2 2 4 1 4 2 5 4 3 7 29 3 3
17 | 2 2 2 4 1 3 2 5 2 4 3 9 9 9 2
18 | 4 2 4 4 3 3 4 2 2 2 3 4 6 8 2
19 | 5 5 3 6 7 7 6 2 3 5 4 5 2 2 3
20 | 10 4 6 7 8 23 4 3 12 9 5 2 3 3
21 | 15 3 3 6 5 5 6 3 5 6 4 10 3 4 4
22 | 5 1 4 2 3 9 5 5 6 4 4 5 2 2 3
23 | 4 2 6 4 2 10 3 6 5 2 8 3 3 2 5
---+------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Note:
. early but distinct Lyrids maximum on April 22.1
Pierre De Groote
---------------------------------------------------------------------------
Observer: Patrice Guérin
Location: Le Pin, France (0° 39' 28" E , 46° 51' 47" N, alt 180m).
Frequency: 90.25 MHz
Antenna: 5 element Yagi FM, astronomical azimuth = 40 deg (SW).
Elevation = 20 deg
Receiver: FM tuner Yamaha digital synthesizer TX-492RDS.
Observing method: Electronic interface on LINE (Pierre Terrier)
output audio signal are fed in COM1 of PC 286/12 boosted 8 MB RAM
METEORV6.0, DOS. COLORGRAMME ON LINE.
| April 2002
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 77 21 76 183 3 70 94 42 98 28 124 45 14 30 54
1 | 98 174 50 147 9 65 102 15 151 23 100 19 3 84 42
2 |110 210 80 133 20 85 89 31 89 17 101 42 11 151 58
3 | 79 240 88 135 20 86 74 14 164 24 75 58 24 129 150
4 |128 192 138 136 49 43 74 80 98 28 135 67 35 109 180
5 |146 173 118 167 38 94 98 21 105 38 114 29 23 126 225
6 |195 142 125 177 23 72 81 70 132 127 101 7 17 74 133
7 |126 47 123 118 12 69 150 58 146 162 50 13 7 135 27
8 |157 23 174 157 25 22 119 93 81 92 23 35 26 54 84
9 |166 35 185 135 23 24 130 57 73 48 35 59 41 26 20
10 |155 76 124 26 35 83 139 70 60 51 35 72 36 37 50
11 | 69 52 90 38 40 45 155 73 83 43 49 43 40 31 50
12 | 37 60 58 42 72 55 146 55 64 69 61 32 37 26 46
13 | 48 83 141 36 56 80 130 81 82 66 151 58 35 40 98
14 | 56 83 142 63 64 89 107 54 76 48 158 45 25 56 155
15 | 59 82 132 49 51 83 109 59 99 58 165 43 31 29 23
16 | 78 104 150 49 49 75 125 77 81 57 137 54 31 35 37
17 | 58 117 121 44 52 80 59 85 95 62 163 75 52 45 42
18 | 66 87 129 27 35 137 34 95 105 89 167 47 52 61 29
19 | 46 106 160 2 22 74 7 110 112 86 135 52 26 81 32
20 | 25 124 149 7 17 91 13 133 141 87 141 30 32 59 14
21 | 19 102 215 24 37 72 14 161 74 81 179 32 22 108 8
22 | 36 126 167 5 55 61 36 163 78 97 135 15 23 85 3
23 | 22 97 161 6 63 70 40 119 46 67 62 25 21 52 32
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2002
| April 2002
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 67 85 47 1 29 112 92 21 18 18 66 15 22 6 3
1 | 50 124 4 1 30 106 46 25 54 3 120 21 34 1 13
2 | 61 170 1 6 37 102 15 143 80 17 112 12 14 3 8
3 | 79 160 76 11 46 80 16 140 36 39 150 6 18 72 45
4 |159 204 175 41 64 124 24 190 93 66 80 2 7 110 118
5 |174 188 206 107 55 80 16 196 54 52 81 0 27 30 63
6 |169 206 174 143 98 111 16 173 102 92 164 6 4 4 12
7 |166 82 170 123 81 46 21 111 108 38 144 9 87 11 12
8 |224 139 82 7 83 176 90 82 77 80 121 10 127 9 7
9 | 78 30 20 14 136 173 89 89 83 149 135 39 110 60 10
10 | 18 15 35 25 68 72 26 24 58 87 54 45 129 57 17
11 | 29 14 46 48 44 51 60 44 35 44 36 43 145 45 35
12 | 24 8 39 59 28 38 27 22 25 70 73 35 20 21 30
13 | 57 28 34 48 22 58 43 35 37 104 74 35 18 34 38
14 | 39 28 54 50 61 39 40 47 78 126 73 38 18 31 29
15 | 33 28 53 31 56 31 50 37 61 104 110 40 32 22 59
16 | 28 50 50 59 75 36 87 30 70 94 152 21 20 40 41
17 | 24 41 61 43 64 34 83 38 35 88 50 37 20 29 31
18 | 37 32 56 58 23 37 66 16 9 53 19 32 39 33 17
19 | 39 32 45 32 44 49 48 23 5 36 17 45 5 22 17
20 | 34 74 33 30 37 79 37 17 16 21 13 17 34 8 45
21 | 13 126 10 5 55 55 26 4 26 109 20 11 49 4 113
22 | 2 137 3 4 88 56 24 11 13 50 34 25 7 3 127
23 | 81 90 1 7 101 42 22 36 15 33 30 71 10 13 29
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2002
Patrice Guérin
---------------------------------------------------------------------------
Observer: Stan Nelson, KB5VL
Location: Roswell, NM 88201 (33 26' 38" N, 104 30'55 W, elev 1110 m)
Receiver: Marantz ST600 receiver in narrow band mode
Frequency: 88.7 MHz
Antenna : 6 element FM beam 45 deg az elevated 15 deg above horizon
Observing method: software Meteor Version 4 Threshold set at 5 on 29 Nov 2000
Data is being uploaded to NASA's Space Weather web hourly
see: http://www.spaceweather.com/
| April 2002
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 4 4 9 4 5 9 6 2 2 3 3 4 2 1 4
1 | 6 0 5 13 2 10 21 0 5 3 5 2 3 2 2
2 | 10 6 4 8 9 25 7 0 4 3 1 1 6 2 1
3 | 16 4 8 14 4 23 23 1 2 4 3 3 2 2 3
4 | 13 16 17 20 16 19 28 6 3 4 3 8 5 3 5
5 | 32 8 36 23 18 18 39 1 1 3 2 7 6 4 10
6 | 18 14 11 22 12 26 91 1 2 7 2 12 5 4 5
7 | 35 10 15 39 19 23 21 2 2 6 7 8 10 8 4
8 | 27 11 17 22 18 29 26 5 7 7 13 14 13 9 14
9 | 30 25 31 43 33 37 27 7 4 11 7 17 21 15 13
10 | 60 25 47 34 45 54 37 9 5 7 9 11 16 8 10
11 | 35 18 23 41 32 43 43 7 5 6 10 25 276? 9 7
12 | 30 36 27 27 23 50 45 6 8 10 14 17 470? 10 18
13 | 26 20 23 32 25 50 38 10 7 17 10 19 393? 7 9
14 | 45 24 39 40 54 61 37 7 13 13 18 10 334? 5 14
15 | 41 23 39 63 46 46 47 10 12 16 20 14 72 9 9
16 | 32 24 35 37 40 50 57 3 12 5 20 11 23 19 18
17 | 30 22 66 36 39 41 40 13 11 184? 28 13 16 6 17
18 | 28 39 34 27 110 30 26 7 6 8 12 29 8 9 11
19 | 11 16 36 29 42 32 42 7 14 36 19 6 11 1 6
20 | 21 15 18 17 36 21 11 8 2 5 7 12 26 5 17
21 | 18 13 23 38 20 23 5 5 3 4 5 8 16 3 6
22 | 7 19 9 17 11 17 7 4 2 3 3 2 4 3 4
23 | 12 10 7 9 7 25 1 0 1 0 4 1 4 2 1
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2002
| April 2002
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 2 1 1 7 0 1 2 0 1 2 1 1 0 1 2
1 | 0 5 1 1 4 4 7 1 1 3 0 6 0 0 2
2 | 4 1 10 2 1 3 4 2 2 2 2 3 0 4 0
3 | 1 5 5 9 0 3 1 8 4 9 4 4 1 3 3
4 | 7 2 4 5 3 7 10 3 6 354? 8 3 1 1 3
5 | 4 5 4 1 7 9 7 10 10 630? 7 6 3 3 2
6 | 5 5 10 10 7 4 17 5 8 377? 8 6 2 4 5
7 | 5 5 10 8 8 9 15 14 5 3 6 4 3 0 3
8 | 11 13 13 17 7 13 17 24 12 11 10 6 4 4 2
9 | 7 9 10 12 4 10 18 386 16 12 6 13 3 5 3
10 | 14 16 8 8 5 13 14 581 9 9 9 11 5 3 7
11 | 12 9 11 14 11 17 11 242 10 19 6 8 1 14 8
12 | 12 16 14 9 13 12 19 18 24 16 11 26 5 11 10
13 | 8 8 14 7 11 9 20 17 24 19 14 28 6 8 3
14 | 12 14 8 13 10 15 24 19 12 12 18 15 12 8 7
15 | 19 16 15 21 13 19 20 12 16 18 15 10 10 14 14
16 | 17 12 14 13 26 15 20 19 21 17 38 10 3 8 6
17 | 12 8 8 30 18 45 19 20 19 11 11 8 9 4
18 | 4 11 12 11 5 11 5 12 13 13 7 10 3 4
19 | 8 0 12 6 3 10 21 15 8 8 13 2 5 3 1
20 | 4 6 7 12 37 5 20 12 5 7 7 4 2 7 1
21 | 5 2 4 1 182? 7 2 8 1 3 8 4 3 4 4
22 | 3 0 8 5 4 3 4 6 3 4 3 1 4 2 1
23 | 1 3 1 2 7 2 2 11 0 3 4 0 2 1 1
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2002
Stan Nelson
---------------------------------------------------------------------------
Observer: Robert Obraz
Location: Samobor, Croatia (15 44' E , 45 48' N, alt 120 m above sea level)
Frequency: 89.25 MHz since April 2002
Antenna: 5-element Yagi FM, horizontal polar.
azimuth 0 deg (N-S), elevation 90 deg (zenith)
Receiver: SONY ICF-2001 FM PLL SYNTHESIZED RECEIVER
Observing method: Electronic interface on LINE output audio signal are fed
in COM1: of PC IBM 386 40 MHz.
METEOR v 5.0 TEXT version processes the signal and records on
hard disk the time of the events.
METEOR parameters: THRESHOLD = 10
COLORGRAMME v 2.2
| April 2002
UT | 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-------------------------------------------------------------------
0h| 9 14 3 8 0 2 10 13 1 6 0 39 1 0 15 13
1 | 21 3 0 3 1 0 0 1 1 7 8 11 1 2 0 6
2 | 4 8 0 0 0 1 0 0 1 3 26 29 28 8 9 0
3 | 0 0 0 0 0 0 0 1 1 0 7 112 8 6 0 0
4 | 16 4 101 0 0 0 0 0 13 10 27 40 26 14 38 10
5 | 22 15 90 0 0 1 2 2 2 27 40 12 0 16 25 18
6 | 8 2 7 0 0 0 5 15 16 35 3 16 13 3 3 15
7 | 5 1 3 0 1 0 2 31 4 45 3 70 2 6 15 14
8 | 23 10 9 5 3 64 3 5 3 39 8 6 3 11 6 19
9 | 0 49 13 17 0 7 1 22 0 15 34 8 5 8 1 22 11
10 | 9 88 12 5 0 2 6 13 7 11 5 13 25 0 8 18 5
11 | 8 19 7 1 0 6 1 16 5 3 12 20 4 0 9 7 57
12 | 2 7 2 12 0 6 0 18 21 1 46 10 4 14 22 26 6
13 | 3 27 13 1 4 5 1 51 15 19 94 22 2 1 25 25 22
14 | 5 8 4 4 5 5 6 28 7 53 30 9 5 10 17 10 24
15 | 30 17 0 7 15 4 1 34 34 23 2 10 5 9 58 6 22
16 | 41 9 10 6 18 16 12 53 21 6 15 38 5 12 21 39 35
17 | 53 33 3 6 10 21 5 56 78 22 13 30 14 44 17 36 37
18 |125 18 4 26 10 23 5 57 59 26 39 16 33 55 38 63 28
19 | 49 21 7 16 4 8 15 48 77 40 29 31 17 12 21 32 35
20 | 40 63 5 8 11 16 2 78 75 12 13 35 13 32 50 59 38
21 | 36 27 7 11 7 2 3 103 50 10 26 47 18 61 26 89 60
22 | 22 9 3 5 5 2 4 90 25 11 15 83 22 63 42 48 34
23 | 2 7 3 8 0 10 4 14 25 10 13 59 11 22 34 11 24
---+-------------------------------------------------------------------
UT | 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2002
Note:
To: pierre.terrier@free.fr
Hello Pierre,
I want to inform you that a new meteor observing station is up and running and
recording data. It is in Samobor, a small historical town 20 km from Zagreb,
the capital of Croatia.
My installation is the same as you describe on your web site, and your web
site
was my inspiration to get involved in meteor observing by radio. After half a
year of studying principles and equipment, I decided to join RMOB.
Robert Obraz
---------------------------------------------------------------------------
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 HB9CV, pointed to the zenith
Observing method: HROFFT and HROview software, manual count.
Hourly echoes over 10 dB SNR
2002
Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 LT
Apr|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 |33 30 32 36 37 45 45 26 41 35 29 26 17@28@25 14 14 13 11 9 13 23@40 IF
2 @42 33 45 62 31 49 42 50@39 IF IF 18 12 30 27 10 7 14 12 12 13 86 38 31
3 |43 31 41 43 37 36 41 49 43@35 28 15 27 21 12 9 13 8 5 8 15 18 24 40
4 |38 46 30 26 39 43 37 19 26@19 10 12 7 11 18 6 @5 @4 7 9 11 20 25 46
5 |23 28 40 34 31 29 34 46@30 IF 15 12 14@12 15 4 5 6 3 6 12 26 19 29
6 |24 39 33 44 30 35 36 35 36 34 28 24 18 18 18 12 7 7 12 9 12 32 24 33
7 |34 30 38 42 41 44 57 68 46 30 26 25 34 30 26 16 11 10 11 5 16 33 36 48
8 |45 43 61 50 36 50 64 56 46 33 25 18 23 17 18 12 8 9 16 9 14 27 21 30
9 |34 36 44 41 44 45 36 44 51 25 35 39 35 25 17 13 9 7 4 10 15 18@15 IF
10 |IF 33 41 38 40 49 48 52 50 23 31 25 28 22 24 19 9 9 13 11 15 36 40 36
11 |40 43 52 49 61 39 36 54 51 36 14 23 19 27 20 15 6 6 5 7 13 27 38 37
12 |40 50 54 48 42 52 50 62 40 50 31 38 37 23 21 16 14 11 8 6 17 23 21 29
13 |35 36 39 41 36 46 42 57@31 41 27 29 23 31 18 17 13 10 9 10 14 20 26 29
14 |29 37 37 38 34 40 39 32 46 38@20 IF IF IF IF IF IF @4 8 10 23 20 23 25
15 |27 36 39 47 44 41 60 42@47 18@20 IF IF 17 17 7 6 8 12 7 17 21 IF IF
16 @36 50 58 47 44 57 57 51 62 60 28 21 25 23 14 15 17 12 15 11 21 33 30 40
17 |IF 54 56 56 61 67 55 72 60 46 30 48 48 20 31 27 15 11 10 13 24 29 IF 37
18 |41@32 44 60 42 46 51 67 50 IF 37 36@20 IF 23 11 @6 3 14 8 17 24 38 38
19 @28 42 48 42 50 49 51 59 42 42 29 29 33 27 17 19 @2 ES@10 41 11 33 30 37
20 |40 51 60 50 50 66 65 68@73 46 44 32 47 54@26 21 ES@18 14 9 12 33 32 60
21 |43 73 69 60 62 78 69 61 56@48
28 | 43 38 39 26 15 17 13 14@23 28 36 40
29 |59 44 59 37 65 67 56 77 62 54 31 37 46 39@28 IF 12 15 16@15 17@32 41 61
30 @37 55 68 54 73 87104 83 58 41 44 43 60 34 39 25 14 20 13 20 20 31 47 36
---+--------------------------------------------------------------------------
Apr|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
Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 LT
2002
Echoes with duration > 20 s
2002
Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 LT
Apr|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
---+--------------------------------------------------------------------------
5 | 1
6 | 1
10 | 1
11 |
12 | 1 1
15 | 1
18 | 1
19 | 1
20 | 1 1
21 | 1
29 | 1
30 | 1 2 2 1
---+--------------------------------------------------------------------------
Apr|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
Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 LT
2002
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
IF: Contamination due to radio noise or interference
ES: Contamination due to sporadic E opening
f: No data available due to TX or RX failure
LT = JST = UT + 9 h
. PC powered off between April 21 and 28
. eta Aquarids activity starting at the end of the month.
Sadao Okamoto
---------------------------------------------------------------------------
Observer: Robert Savard
Location: Sherbrooke Quebec Canada (45d 25' N, 71 d 55' W)
Frequencies: 88.3 MHz
Antenna : HB9CV beam 260 deg az elevated 20 deg above horizon
Pre-amplifier:
Receiver: Car radio Blaupunkt SQR28
Observing method: software Meteor Version 6.0
| April 2002
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| ? 12 12 8 18 13 4 11 12 12 17 21 16 17 17
1 | 9 10 13 12 16 17 10 9 5 8 12 22 18 17 8
2 | 7 11 12 13 11 13 8 12 16 12 16 15 13 21 18
3 | 1 7 8 10 21 16 18 15 17 16 13 28 14 20 14
4 | 11 15 18 18 15 19 19 16 18 13 21 19 22 21 16
5 | 11 13 10 16 14 24 14 18 18 21 20 17 25 31 23
6 | 13 14 6 14 17 20 25 16 23 21 28 26 18 18 15
7 | 14 8 13 23 20 14 19 20 12 28 24 21 15 25 19
8 | 14 17 9 22 16 12 19 18 20 14 26 17 19 17 17
9 | 13 10 9 17 27 22 16 17 18 20 12 19 17 29 28
10 | 7 9 11 20 18 21 10 20 15 19 21 21 18 20 19
11 | 7 16 16 16 25 17 22 20 32 16 16 14 26 25 26
12 | 12 13 17 17 17 12 23 24 24 25 16 28 20 27
13 | 15 18 16 19 14 13 32 16 23 25 30 22 26 28 27
14 | 24 14 20 21 32 20 18 22 20 26 27 26 23 34
15 | 8 9 19 14 11 12 16 26 14 25 35 24 28 33
16 | 15 6 14 10 16 26 13 20 26 16 27 14 22 22
17 | 9 7 15 15 16 19 10 9 20 13 31 35 28 17
18 | 19 8 14 13 13 31 14 14 16 18 19 25 12 15 21
19 | 16 6 9 24 18 9 14 12 6 22 16 27 13 14 16
20 | 14 13 3 14 4 17 12 9 11 12 14 23 6 14 11
21 | 11 9 9 15 14 9 13 8 8 8 14 22 13 13 9
22 | 6 8 9 14 14 16 12 8 5 13 13 12 10 7 18
23 | 8 13 12 15 9 15 17 7 6 12 10 13 13 24 25
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2002
| April 2002
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 20 24 23 26 36 27 13 12 34 15 27 6 20 12 6
1 | 5 16 21 32 15 16 14 18 13 16 5 19 15 11
2 | 19 26 32 27 11 18 18 19 21 24 15 15 14 12
3 | 17 23 23 23 21 30 25 22 31 25 19 15 22
4 | 17 22 26 19 37 27 21 24 21 26 19 21 17
5 | 21 34 32 27 31 25 31 28 20 23 27 16 23
6 | 22 40 33 46 25 33 25 23 18 26 25 27 16 28
7 | 24 42 32 25 28 40 21 20 21 32 16 18 19 29
8 | 15 31 29 42 22 39 44 31 21 20 25 24 19 18 33
9 | 23 13 19 21 29 41 23 20 23 25 26 29 21 23 34
10 | 20 29 24 22 28 24 28 23 31 20 35 23 30 25
11 | 32 28 30 26 27 28 15 22 25 21 38 25 36
12 | 43 33 26 44 23 28 38 34 29 28 32 38
13 | 18 39 37 24 42 21 23 22 32 32 38
14 | 24 47 27 31 19 32 32 19 28 44 36
15 | 38 42 25 33 18 43 30 29 29 39
16 | 24 24 22 19 27 24 28 22 22 19
17 | 15 25 32 31 19 17 13 36 17
18 | 13 19 15 22 25 19 14 10 25 11 28 27 15
19 | 12 13 23 23 13 26 8 14 16 15 20 29 20 9
20 | 19 10 14 20 24 6 16 9 10 10 28 11 10
21 | 10 15 29 17 11 12 7 17 14 9 24 4 10
22 | 17 7 10 23 12 12 10 10 12 17 16 11 13
23 | 13 27 18 40 31 25 10 20 13 14 12 18 10 7
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2002
Robert Savard
---------------------------------------------------------------------------
Observer: Dave Swan
Location: Christchurch UK (50.47 N 1.44 W)
Receiver: Pro 2006 (modified to give a carrier detected
output for Chessell 301 pen recorder).
Detected signal level > -123 dBm
Antenna: 5 element Yagi Gain 7.5 dBd.
Azimuth 210 deg elevation 10 deg.
Antenna relocated and RG 213 low loss cable installed on
July 28, 2001, 09h00.
This removed a -2 dB loss from the antenna and feeder system.
Frequency: 55.25 MHz
Transmitter: TV channel E3 (video) Portugal; transmitter Lousa;
distance ~ 1250 km
Computer: AST 486 Notebook with Meteor v 5.0 software
| April 2002
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 45 56 57 49 50 55 64 51 58 62 60 61 54 61 56
1 | 57 67 58 62 50 58 69 65 60 49 43 65 58 58 60
2 | 85 26 67 54 72 103 73 66 35 61 83 68 73 68 71
3 | 69 15 80 87 79 79 83 73 26 65 75 75 82 56 53
4 | 67 27 66 83 69 81 75 67 21 58 73 76 82 63 56
5 | 72 52 62 74 60 82 76 64 53 68 82 81 80 64 72
6 | 77 67 63 58 71 63 76 69 63 73 50 77 76 59 73
7 | 85 82 88 92 66 81 87 84 87 90 87 105 96 77 115
8 | 98 79 103 104 106 90 115 96 124 102 100 94 107 99 131
9 | 85 77 65 95 105 119 116 135 119 109 123 112 134 113 161
10 | 80 118 79 105 96 119 112 98 95 104 114 119 95 77 107
11 | 89 89 55 74 91 124 104 75 110 78 96 95 109 91 112
12 | 86 81 40 93 89 108 93 80 111 59 108 92 64 85 106
13 | 89 91 37 81 82 87 84 82 101 77 104 84 80 92 100
14 | 70 55 35 71 79 82 60 76 76 71 80 78 77 81 99
15 | 52 61 26 53 64 62 37 52 55 60 61 60 43 65 74
16 | 47 45 36 56 37 28 29 45 31 30 39 36 28 34 42
17 | 34 26 18 27 26 22 23 24 17 18 30 28 20 17 30
18 | 19 20 13 26 19 17 15 17 11 22 26 24 27 20 25
19 | 17 9 13 24 32 27 23 17 27 20 31 26 18 14 27
20 | 28 21 24 22 22 25 22 14 24 22 32 22 27 27 20
21 | 39 43 34 30 43 35 41 28 24 18 41 34 49 39 14
22 | 33 44 51 45 39 50 35 50 44 46 58 41 38 54 24
23 | 40 39 50 31 40 56 54 45 62 44 51 50 50 68 16
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2002
| April 2002
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 34 52 41 47 50 46 76 96 56 44 40 26 66 38 48
1 | 27 54 44 64 47 69 100 121 73 60 40 30 69 56 68
2 | 31 92 50 68 70 87 85 96 74 48 42 42 70 41 63
3 | 36 83 50 72 68 68 83 103 91 67 57 48 90 69 66
4 | 30 60 52 70 82 58 101 89 88 77 61 50 87 67 102
5 | 49 87 55 66 97 73 96 66 79 85 72 62 89 79 109
6 | 67 83 82 71 79 81 103 111 83 81 86 67 137 108 110
7 | 92 111 97 120 87 100 139 128 112 134 137 73 115 129 127
8 |130 68 107 144 91 107 142 155 147 130 134 65 103 170 118
9 |119 22 102 151 101 130 141 127 137 119 146 54 119 128 121
10 |111 35 100 122 117 88 132 143 124 119 82 41 91 96 129
11 | 93 33 117 106 109 67 94 122 89 105 87 45 97 92 100
12 | 88 31 96 91 98 107 91 112 94 95 110 72 91 103 103
13 | 82 56 108 81 97 79 65 114 110 114 94 99 104 117 112
14 | 83 72 78 79 65 68 87 90 115 96 83 80 91 94 90
15 | 60 67 65 59 65 52 60 72 75 74 70 52 76 70 77
16 | 40 42 43 31 30 21 41 39 51 45 56 22 43 40 29
17 | 28 30 21 28 25 14 19 36 25 16 24 22 28 27 28
18 | 21 30 19 20 18 20 17 19 14 23 15 15 14 15 27
19 | 14 15 23 15 9 18 36 17 21 13 12 26 16 21 23
20 | 25 27 33 104 18 32 20 27 28 20 17 36 28 27 34
21 | 42 35 30 44 32 32 35 31 25 18 13 44 27 40 33
22 | 39 25 45 38 41 44 56 42 27 25 21 38 40 38 42
23 | 36 31 52 62 35 49 86 53 40 42 29 70 56 28 45
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2002
Notes:
? probably affected by Es.
When no figure is shown, the equipment was out of service.
Dave Swan
---------------------------------------------------------------------------
Observer: Pierre Terrier
Location: Canet, France (3 36'E, 43 41' N)
Frequencies: 93.7 MHz
Antenna: 6-element Yagi FM, horizontal polar.
azimuth 0 deg (N-S), elevation 90 deg. (zenith)
Pre-amplifier: home made, gain 15 dB, Nf < 2 dB
Receiver: Tuner FM Continental Edison digital synthesiser TU 9945
Observing method: Electronic interface on LINE output audio signal are fed in
COM1: of PC Pentium 75 MHz.
WMeteor v 1.0 (Windows) processes the signal and records on
hard disk the time of the events.
WMeteor parameters: THRESHOLD = 14
COLORGRAMME v 2.2 working with WMeteor to display the visual
graphic data per hour and generates RMOB bulletin automatically.
| April 2002
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 27 39 38 54 82 43 30 34 34 29 33
1 | 24 33 56 39 60 43 55 38 40 35 43
2 | 27 30 49 62 46 42 42 45 41 33 35
3 | 21 35 44 47 41 33 36 36 32 17 31
4 | 25 36 48 57 50 30 44 36 36 34 40
5 | 25 28 71 56 58 42 42 41 52 45 60
6 | 31 47 3 76 57 51 41 42 36 39 36 35
7 | 30 56 51 90 51 69 44 38 54 38 47 55
8 | 33 58 42 52 45 41 41 49 39 41 55 60
9 | 23 57 38 74 80 58 55 50 44 49 39 46 54
10 | 42 69 73 45 91 50 28 49 45 38 42 46 49
11 | 23 33 50 41 70 43 39 46 41 46 49 38 30
12 | 33 52 57 47 38 66 36 40 41 57 28 45 38
13 | 31 48 63 33 51 36 37 27 35 39 38 46 44
14 | 17 64 51 16 38 46 50 33 27 36 38 45 49
15 | 34 45 82 25 24 55 32 36 27 40 33 39 25
16 | 31 52 99 14 23 27 19 13 29 37 21 23
17 | 27 48 87 24 22 21 19 26 14 37 25 25
18 | 23 56 73 16 27 36 30 19 28 13 30 20
19 | 23 59 62 31 24 29 20 21 27 21 19 26
20 | 17 63 27 25 67 38 23 20 19 17 11 27
21 | 10 85 36 26 82 24 22 20 22 31 29 30
22 | 20 80 26 39 100 38 30 35 32 26 28 32
23 | 21 97 40 45 94 33 33 26 26 39 36 36
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2002
| April 2002
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 31 37 36 29 36 45 43 55 47 41 38 28 34 31
1 | 52 38 36 38 47 52 46 52 52 30 35 37 30 21
2 | 42 36 37 42 46 40 48 53 36 32 37 36 38 38
3 | 38 40 38 36 36 52 45 44 40 29 31 46 39 38
4 | 39 26 31 29 42 40 43 48 42 45 35 32 41 45
5 | 47 40 30 41 30 59 44 55 47 44 43 38 60 55
6 | 42 52 37 47 42 43 68 38 57 47 42 48 59 52
7 | 65 40 40 45 42 50 51 54 65 59 59 52 46 74
8 | 49 35 32 50 57 29 78 45 54 51 47 56 46 52
9 | 46 8 38 53 55 52 58 52 55 51 48 51 50 69
10 | 49 10 66 43 47 40 65 47 52 41 49 34 51 61
11 | 42 19 41 49 45 46 44 56 43 49 41 41 47 38
12 | 35 34 30 55 38 49 43 41 41 50 54 33 40 39
13 | 35 26 40 35 40 31 33 35 41 34 31 19 34 36 50
14 | 36 22 41 40 27 42 43 40 42 37 31 31 28 22 31
15 | 28 26 44 31 20 24 30 33 35 17 36 18 19 37 39
16 | 16 17 28 34 18 32 19 21 11 19 35 17 25 22 34
17 | 15 14 29 22 15 23 17 11 15 20 17 15 30 26 28
18 | 12 19 19 25 16 33 12 14 21 17 24 18 17 13 14
19 | 20 28 26 23 17 15 26 19 22 24 23 20 13 32 25
20 | 23 13 18 35 12 27 22 24 23 22 15 14 28 20 16
21 | 20 18 25 20 25 19 14 24 34 19 15 24 24 27 21
22 | 23 28 24 34 35 40 36 20 15 36 24 19 25 37 25
23 | 23 27 27 37 34 31 51 30 30 40 24 24 38 37 37
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2002
Note:
. data are not corrected for Sporadic E.
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 50 MHz 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: Icom R-75 all band receiver
Sensitivity: 0.25 uV for 10 dB S/N for USB mode
Observing method: the beacon 1000 Hz voice signal (by FFTDSP) is
received by a low frequency filter (1000 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.
2002|08h09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06
07 LT
Apr |00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22
23 UT
----+-----------------------------------------------------------------------
---
6 | - - - 5 4 4 5 3 6 4 4 6 5 11 12 18 15 25 18 25 29 39 24 25
7 |30 11 9 8 8 7 - - - - - - - - - - - - - - - - - -
13 | - - - - - - - 6 8 6 4 9 7 10 6 17 23 23 43 24 20 22 21 29
14 | 9 17 8 10 9 8 - - - - - - - - - - - - - - - - - -
20 | - - - - - E E E 7 5 6 11 8 11 12 16 9 8 10 9 15 12 21 30
21 |26 12 15 E E - - - - - - - - - - - - - - - - - - -
27 | - - - - 3 7 3 6 11 8 10 6 7 7 5 6 8 3 5 8 11 8 6 16
28 |22 24 13 8 11 8 - - - - - - - - - - - - - - - - - -
----+-----------------------------------------------------------------------
---
Apr |00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22
23 UT
2002|08h09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06
07 LT
Notes:
. "In" (local) artificial interference.
. "Es" = sporadic E layer mode of reflection.
* local time = UT + 8 h
Garfield Tsao
---------------------------------------------------------------------------
Observer: Ilkka Yrjölä
Location: Finland (26 35' E, 60 54' N)
Frequency: 88.7 + 107.9 MHz
Receiver: Modified car radios, narrow band FM (B=15 kHz)
detected signal level >-131 dBm.
FM squelch detection, no pulse noise rejection required.
Antennas: two 3-el. Yagis, G=4 dBd to SW, azimuth 45 deg (SW), polarisation H
Data sampling system: squelch threshold triggering, sampling rate 32 ms.
Computer logs total reflection time, number of events in 10 minute
periods for each receiver.
Data on major showers available in the Compact MS-Soft format.
New versions and revised documents available, please replace
old MS-Soft versions.
* Documents for MS-Soft 5.1. Zipped ~2.5 MB
* MS-Soft v5.1 for Ham Radio MS, VGA only. Zipped ~0.4 MB
* MS-Soft v4.4 runs on EGA/CGA/Text. Zipped ~0.45 MB
* VM-Soft v4.4 for visual meteor work. Zipped ~0.37 MB
Lyrids 2002
UT | 21 Apr 22 Apr 23 Apr 24 Apr
----+--------------------------------
0h | 338 436 313
1 | 335 467 286 353
2 | 295 526 344 339
3 | 277 511 350 294
4 | 281 488 374
5 | 338 611 368
6 | 353 614 357
7 | 419 630 367
8 | 365 527 384 399
9 | 283 406 394 360
10 | 310 385 275 317
11 | 260 370 326 299
12 | 250 290 254 298
13 | 222 222 253 250
14 | 230 269 208 253
15 | 210 195 223 211
16 | 191 201 240 253
17 | 216 226 171 184
18 | 182 282 201 245
19 | 226 309 233 214
20 | 260 294 234 240
21 | 344 350 281 326
22 | 360 375 256 306
23 | 402 365 272 353
----+--------------------------------
UT | 21 Apr 22 Apr 23 Apr 24 Apr
Note:
. Aurora on April 23
Ilkka Yrjölä
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 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 previous month's 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, links to interesting web sites.
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.
3. CONTRIBUTORS / USEFUL ADDRESSES
Enric Fraile Algeciras (EA3BTZ)
C/ Moianes 19-21 Esc. A 6º 1ª, E Barcelona
mailto:Ea3btz@retemail.es
http://personal3.iddeo.es/ea3btz (in Spanish)
Michael Boschat
Royal Astronomical Society of Canada - Halifax Center
6391 Liverpool St., Apt.1, Halifax, Nova Scotia, Canada B3L 1Y1
mailto:aa063@chebucto.nsdot ca
http://www.atm.daldot ca/~boschat
Jeff Brower
Loveland, Colorado, USA
mailto:NK0L@amsat.org
Maurice De Meyere (ON4NU)
Hullekensstraat 24, B-9831 Deurle, Belgium
mailto:maurice-demeyere@tiscalinetdot be
Minoru Ehara
Saitama, Japan
mailto:BZQ17520@nifty.ne.jp
Ghent University, Astronomical Observatory
Krijgslaan 281(S9), B-9000 Gent, Belgium
mailto:Pierredot deGroote@rug.acdot be, mailto:paul_vauterin@applied-maths.com
Patrice Guérin
La Chapelle, 79140 Le Pin, France
mailto:astro03947@wanadoo.fr
Alastair McBeath
IMO: International Meteor Organization
12A Prior's Walk, Morpeth, Northumberland, NE61 2RF, England, U.K.
mailto:vice_president@imodot net
Toshihide Miyake
Okayama, Japan
mailto:to-miyake@mx31.tiki.ne.jp
Stan Nelson, KB5VL
Roswell, NM 88201, USA
mailto:sanelson@starbanddot net
Robert Obraz
Samobor, Croatia
mailto:deepsky@hotpop.com
http://free-zg.hinet.hr/seti
(in Croatian only, English pages under construction)
Hiroshi Ogawa
University of Tsukuba, Japan
mailto:HZH02257@nifty.ne.jp
Radio Meteor Obs. http://homepage2.nifty.com/~baron/
Sadao Okamoto
mailto:okamoto@jim.sugiyama-u.ac.jp
Robert Savard
Sherbrooke Quebec Canada
mailto:rs@sympaticodot ca
http://www.r-savarddot ca (in French only)
Chris Steyaert, VVS
Kruisven 66, B-2400 Mol, Belgium
mailto:steyaert@vvsdot be
Dave Swan
Christchurch, UK
mailto:daveswan@dorsetpubs.com
http://www.radiodesignservices.codot uk
Pierre Terrier
Canet (close to Montpellier), France
mailto:pierre.terrier@free.fr
http://members.tripod.com/~astro_electronic/index.html
Meteor & Colorgramme web site: http://page.to/meteor/
Visual RMOB web site : http://visualrmob.free.fr/
Meteor mailing list: mailto:meteor-request@ml.free.fr?subject=subscribe
Garfield Tsao (BM2EQB)
LonTan Observatory, LonTan, TauYan, Taiwan
mailto:tsao5916@ms4.accmail.com.tw
http://www.geocities.com/Eureka/Office/1528 (in Chinese)
Ilkka Yrjola
Kuusankoski, Finland
http://www.sci.fi/~oh5iy
Ham Call: OH5IY
--
Christian Steyaert (RMOB0204) 9 May 2002
--
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