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(meteorobs) Radio Meteor Obs. Bull. October 2000
Radio Meteor Observation Bulletin No. 87 November 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: 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.
| Oct 2000
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+--------------------------------------------------------------------------
0h| 4 8 4 6 11 5 5 12 11 8 8 5 12 11 5
1 | 12 5 12 2 8 9 9 5 9 4 1 10 7 8 10
2 | 5 4 7 7 6 6 8 14 7 5 3 3 2 2 7
3 | 3 6 1 1 1 3 2 7 9 5 3 8 9 7 10
4 | 17 9 15 1 18 10 13 11 12 13 12 9 11 7 10
5 | 11 11 12 12 10 25 11 5 11 15 12 18 14 6 3
6 | 13 3 8 18 7 15 10 22 5 31 11 29 5 5 2
7 | 17 11 9 23 10 10 13 10 10 18 4 12 7 10 9
8 | 18 16 7 18 17 11 13 7 23 14 12 18 5 11 9
9 | 7 12 25 14 11 11 14 9 8 9 13 2 32 26 9
10 | 8 8 4 5 8 9 15 11 8 14 7 18 22 7 36
11 | 10 9 6 12 7 20 6 10 5 10 7 53 7 14 50
12 | 4 17 5 5 8 7 5 14 4 5 6 2 2 56 17
13 | 6 11 11 3 8 5 12 13 12 4 7 11 14 17 77
14 | 1 8 21 8 6 10 11 7 11 7 3 ? 90 2 54
15 | 2 3 2 3 ? 12 7 8 ? 50 2 ? 50 7 4
16 | 3 5 3 10 ? 9 ? 13 23 9 3 6 4 3 8
17 | 14 4 3 6 ? 27 ? 37 6 16 10 4 2 7 3
18 | 4 4 6 3 5 5 ? 6 3 9 4 11 4 20 9
19 | 2 11 5 1 6 7 2 4 9 27 8 7 5 12 6
20 | 6 4 13 6 7 4 5 10 9 5 10 6 8 9 5
21 | 5 6 11 7 7 11 9 14 10 8 9 17 6 8 5
22 | 3 6 7 3 8 9 5 10 19 9 10 10 4 13 4
23 | 1 6 5 2 4 16 8 10 7 4 8 6 15 9 4
---+--------------------------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| Oct 2000
| Oct 2000
UT | 16 17 18 19 20 21 22 23 24 25 30 31
---+---------------------------------------------------+---------
0 | 5 6 6 6 34 4 11 7 6 5 75
1 | 5 8 11 4 4 6 7 7 2 7 46
2 | 8 1 8 2 22 2 5 2 0 4 29
3 | 7 3 4 5 33 4 10 9 3 1 19
4 | 12 10 39 8 10 4 22 8 6 8 17
5 | 12 7 8 5 11 11 6 10 9 6 56
6 | 2 11 21 5 6 10 6 15 5 11 65
7 | 6 9 4 38 2 14 13 44 4 4 100
8 | 16 9 19 22 10 9 1 13 34 1 108
9 | 21 15 42 17 51 20 4 17 16 2 88
10 | 19 13 2 3 7 14 12 54 4 1 60
11 | 28 11 4 15 43 6 8 66 3 25 58
12 | 47 70 ? 9 ? 11 22 5 4 37 ?
13 | 4 33 ? 6 ? 3 1 3 19 66 ?
14 | 6 77 6 7 ? 5 4 2 5 ? ?
15 | 31 9 23 4 1 ? 5 11 3 ? 28
16 | 2 5 10 5 3 7? 4 3 1 ? 94
17 | 7 7 4 9 6 ? 6 3 3 39 86
18 | 7 7 6 5 7 9 4 4 12 31 38
19 | 9 11 8 22 8 3 6 3 8 37
20 | 6 5 2 47 3 5 5 5 7 39
21 | 4 6 5 24 13 8 6 2 6 54
22 | 5 3 9 42 8 9 10 8 9 45
23 | 8 2 6 84 8 6 6 1 2 47
---+---------------------------------------------------+---------
UT | 16 17 18 19 20 21 22 23 24 25 30 31
| Oct 2000
Note:
My future projects in meteor detection are:
* complete special receiver (student project, will finish in March 2001)
* change the MSD from CVI language to visual C or Delphi (end 2001)
* get more information with the new MSD (meteor speed, density etc. end 2001)
* interactive WEB meteor detection (end 2001), every one can hear the
reflections
in real-time via Internet. Also on can choose some statistics about the
reflections.
* put on a new antenna array at the new observatory location (middle or end
2002).
Enric Fraile Algeciras
---------------------------------------------------------------------------
Observer: Jean-Louis Aillaud
Location: Sainte Clotilde, Réunion Island (55 29' E, 20 52' S)
Frequency: 87.7 MHz, 89.7 MHz (empty frequency for coincidence)
Transmitter location: Madagascar - 850 Km
Antenna : 3 elements Yagi FM horizontal polarisation
elevation 90 deg (zenith), astronomical azimuth: 114 deg (=West)
Receiver 1: FM tuner Technics ST G 450 L (on 87.7 MHz)
Receiver 2: FM tuner TEAC TR 400 (on 89.7 MHz)
observing method: Electronic interface on LINE output audio signal are fed in
COM2: of PC (1) 100 MHz and COM2: of PC (2) 200 MHz
METEOR V4.0 processes the signal and records on hard disk the time
of the events.
METEOR parameters: threshold 10 for 87.7 89.7 MHz
COLORGRAMME V.2 for examined DATA and generates RMOB bulletin
automatically
COLORGRAMME parameters: sum freq 3000
| Oct 2000
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0 | 0 0 0 0 0 1 0 0 6 0 0 0 0 0 0
1 | 2 0 0 0 0 1 0 3 2 0 0 0 2 2 0
2 | 2 0 7 0 0 4 2 16 1 0 0 5 0 4 0
3 | 10 0 7 0 0 3 8 0 4 9 0 1 1 0 3
4 | 16 4 11 0 2 9 19 13 20 9 4 13 2 2 14
5 | 2 6 3 9 29 7 7 24 20 3 3 0 3 17 35
6 | 2 9 18 2 18 2 3 17 21 0 7 8 4 10 13
7 | 4 3 16 3 25 4 1 2 24 0 2 3 1 11 7
8 | 2 9 2 6 12 2 0 8 25 4 9 2 10 21
9 | 4 11 12 0 5 2 20 0 2 4 7 3 3 11
10 | 0 14 11 3 16 1 3 9 10 0 0 2 10 9
11 | 0 6 14 0 11 4 7 2 14 0 0 4 14 24
12 | 3 18 19 1 18 2 11 12 26 5 0 7 18 30
13 | 2 38 15 0 20 1 6 21 23 5 0 12 12 20
14 | 8 9 9 0 18 9 17 29 9 14 0 20 17 17
15 | 6 24 15 0 25 12 16 27 9 9 4 13 1 25
16 | 3 14 0 0 8 15 13 9 20 12 4 22 15 35
17 | 5 3 0 0 18 10 14 11 27 18 10 9 11 22
18 | 1 5 0 0 5 19 23 6 6 0 10 11 1 8
19 | 0 0 0 0 9 14 8 2 8 4 10 10 10 12
20 | 0 3 0 0 0 2 4 11 5 4 1 3 2 11
21 | 0 6 0 0 0 2 9 3 7 4 0 0 0 0
22 | 0 4 2 0 0 0 0 0 3 3 0 0 0 3
23 | 0 0 0 0 0 0 2 0 0 3 1 0 2 1
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| Oct 2000
| Oct 2000
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---+---------------------------------------------------------------
0 | 0 0 0 2 2 0 0 0 2 0 2 1 1 9 0 4
1 | 3 0 0 3 0 1 1 0 5 0 2 0 0 8 0 0
2 | 8 0 0 1 0 8 3 0 8 0 9 0 0 5 6 0
3 | 7 12 0 8 0 12 3 0 4 10 4 0 2 2 12 4
4 | 14 17 2 0 0 13 4 1 4 16 5 3 12 20 7 10
5 | 5 17 14 1 4 9 6 15 10 5 6 31 0 23 9 3
6 | 15 6 17 2 12 0 0 4 4 10 12 3 0 17 9 7
7 | 5 3 4 15 2 8 0 14 17 3 24 1 6 11 11 6
8 | 3 18 7 4 2 6 1 5 7 6 29 0 7 12 13 3
9 | 7 11 7 12 2 15 13 2 2 4 7 0 15 14 6 2
10 | 11 4 7 5 6 9 1 8 0 2 3 0 16 12 12 4
11 | 15 12 6 2 7 5 2 6 8 2 9 0 5 5 7 3
12 | 13 5 11 11 3 5 13 9 10 3 10 0 8 12 11 5
13 | 15 10 9 9 9 6 3 11 3 10 17 0 5 15 17 6
14 | 16 12 13 5 8 2 7 11 9 0 9 1 20 27 3 7
15 | 9 10 9 7 3 17 5 18 10 2 12 3 17 9 16 8
16 | 12 2 7 0 0 5 9 9 17 7 9 0 20 10 9 5
17 | 16 2 10 2 0 1 0 2 8 2 10 0 8 15 10 9
18 | 2 0 11 1 0 2 1 1 9 0 4 0 19 2 5 10
19 | 0 0 8 3 4 2 0 2 4 5 9 0 4 5 0 0
20 | 5 0 11 0 7 0 0 2 4 3 0 0 2 3 0 0
21 | 0 0 10 0 0 0 0 4 4 1 8 0 4 0 0 7
22 | 0 0 4 0 1 2 0 7 0 0 1 0 6 0 0 0
23 | 0 2 0 0 0 0 0 0 1 0 0 0 3 0 0 0
---+---------------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
| Oct 2000
Jean-Louis Aillaud
---------------------------------------------------------------------------
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
October 2000
Number of meteors heard in one hour interval
2000| UT
Oct | 10 11 12 13 14 15 16 17
----+-------------------------------
4 | - - 20 18 20 21 14 13
5 | - - 4* 7* 3* - - -
6 | - 13 19 30 5* - - -
7 | - - 7 7 12 6 - -
8 | - - - 22 18 - - -
9 | - - 7 10 6 3 - -
10 | - - 2 11 5 - - -
11 | - - - - - - - -
12 | - - 6 13 7 9 - -
13 | - 8 6 17 13 23 8 -
14 | 4 6 19 21 24 34 10 9
15 | - 12 8 14 12 - - -
16 | - 20 12 21 14 15 11 -
17 | - 8 23 12 15 9 - -
18 | - 8 27 16 20 11 - -
19 | - 18 20 17 17 - - -
20 | - 21 19 21 11 - - -
21 | - 8 7 7 - - - -
22 | - - 6 9 13 10 - -
23 | - 32 21 22 25 23 21 8
24 | - - - - - - - -
25 | - 4 6 22 13 - - -
26 | 7 9 11 20 14 15 - -
27 | - - - - - - - -
28 | - - - 13 8 12 11 -
29 | - - - 8 9 11 19 -
----+-------------------------------
Oct | 10 11 12 13 14 15 16 17
2000| UT
Notes:
. no corrections for radiant position made to the counts
. - = 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 Ghent University format (Prometeos), and are
available for further analysis. Reduction software for DOS and
Windows available].
October 2000
Raw counts of reflections with a duration of at least 0.027 s
during one hour interval starting at UT:
Oct | UT
2000 | 20h 21 22 23 00 01 02 03 04 05 06 07
------+-----------------------------------------------------------
1- 2 | 44 48 13 26 17 25 119 137 112 130 129
2- 3 | 50 41 25 33 21 35 98 103 135 ? 109
3- 4 | 35 53 35 40 26 25 79 83 171 138 124
4- 5 | 40 37 30 41 20 40 87 107 119 ? 110
5- 6 |
6- 7 | 20 32 44 37 37 46 96 86 100 144 62
7- 8 | 21 31 25 27 30 33 64 171 128 118 99
8- 9 | 36 33 23 34 38 54 116 122 164 180 156
9-10 | 49 37 31 28 23 42 88 138 133 129 116
10-11 | 44 40 42 41 29 48 88 102 141 128 55
11-12 | 37 27 17 44 38 49 132 117 111 144 137
12-13 | 27 30 25 21 24 36 73 91 115 175 116
13-14 | 33 36 32 36 23 58 114 130 151 113 115
14-15 | 48 27 39 32 21 62 145 140 113 73
15-16 | 41 59 27 27 27 24 146 153 129 166 79
16-17 | 50 49 43 74 84 68 124 162 ? 206? 124
17-18 | 69? 44 24 16 26 44 136 191 175 ? 171
18-19 | 41 67 41 57 18 30 141 156 186 154 120
19-20 | 47 49 25 34 27 64 150 192 181 202 136
20-21 | 43 46 21 24 26 36 127 290 203 178 199
21-22 | 63 53 29 22 25 23 66 158 208 112 105
22-23 | 38 80 13 15 21 92 156 153 260 205 125
23-24 | 36 55 23 19 31 72 136 185 235 ? 153
24-25 |
25-26 | 12 34 40 21 34 47 109 119 121 112 78
26-27 | 17 26 14 18 44 42 99 143 114 ? 156
27-28 | 21 33 22 23 23 34 65 83 108 91 56
28-29 | 17 24 30 27 41 36 41 71 152 94 120 55
29-30 | 54 43 34 49 54 46 99 98 142 105 67
30-31 | 27 37 30 46 43 47 95 97 126 120 109
31-01 | 25 47 30 47 34 33 93 99 100 90 79
------+-----------------------------------------------------------
2000 | 20h 21 22 23 00 01 02 03 04 05 06 07
Oct | UT
Raw counts of reflections with a duration of at least 1.000 s
during one hour interval starting at UT:
Oct | UT
2000 | 20h 21 22 23 00 01 02 03 04 05 06 07
------+------------------------------------------------------------
1- 2 | 4 5 2 4 3 2 16 20 13 16 11
2- 3 | 6 3 2 5 1 4 12 10 19 ? 13
3- 4 | 4 6 7 10* 4 6* 9 9 30 26 31*
4- 5 | 3 0 9* 10* 1 4 8 14 28* ? 39*
5- 6 |
6- 7 | 3 5 3 4 9* 5 18 14 16 26 13*
7- 8 | 2 1 0 5 2 3 12 28 16 15 12
8- 9 | 5 8* 3 7* 2 5 15 19 32 33 31
9-10 | 10* 3 8* 5 8* 6 10 19 20 15 22
10-11 | 3 3 4 6 4 5 9 10 22 20 5
11-12 | 3 2 2 8 6 11* 30? 15 9 24 19
12-13 | 1 4 5 2 3 3 5 12 26* 56* 26*
13-14 | 2 5 8* 4 5* 10 19 22 18 13 29*
14-15 | 15? 2 2 2 3 12 15 21 19 14
15-16 | 12? 7 5 5 1 3 18 9 18 33 16*
16-17 | 5 6 10* 9 11 16* 22 20 50 36 19
17-18 | 6 6 3 5* 5 8 17 27 32 ? 41*
18-19 | 6 8 4 11 1 3 14 30 31 23 20
19-20 | 9 9 2 10* 4 10 22 36 25 40* 25
20-21 | 5 7 1 5* 4 7 12 51 29 37* 49*
21-22 | 9 6 8* 4 3 2 11 30 37 13 8
22-23 | 4 20* 1 1 5* 18 23 20 68* 59* 40*
23-24 | 3 9 1 3 5 10 27 19 42 42 25
24-25 |
25-26 | 3* 7* 6 4 6 6 17 12 11 19 10
26-27 | 1 3 2 3 9* 9* 13 18 16 29 38*
27-28 | 1 1 3 1 3 4 7 14 17 12 9
28-29 | 3 6* 4 3 6 4 4 16* 24 9 15 6
29-30 | 15? 6 5 10* 9 4 13 14 28 12 12
30-31 | 2 3 2 10* 11* 9 12 14 14 10 23*
31-01 | 1 7 2 9 3 5 15 13 11 19* 22*
------+------------------------------------------------------------
2000 | 20h 21 22 23 00 01 02 03 04 05 06 07
Oct | 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 + 2 hours
change to winter hour on Oct 29, 2h UT (local time = UT + 1 hour)
. changed trigger level to 20 AD counts starting Oct 2000 (previously
6 AD counts since the start of the observations in 1993).
As expected this setup is less sensitive to (low volume) interference.
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.
-------------------------------------------------------------
| Oct 2000 | 10x % reflec. time | horiz: day | vert: time UT|
----------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+------------------------------------------------------------
0 | 14 21 17 6 8 16 18 13 20 12 9 7 35 21 17
1 | 13 18 16 11 12 18 26 20 16 24 15 19 19 18 31
2 | 17 40 41 26 22 37 32 33 37 26 17 18 22 44 50
3 | 32 45 57 30 24 48 55 66 41 50 50 25 37 44 42
4 | 68 57 54 25 21 77 49 45 52 46 62 26 38 40 62
5 | 61 58 63 87 46 49 68 50 48 53 42 42 40 28 24
6 | 50 60 59 104 42 35 55 55 96 88 41 38 56 44 29
7 | 63 90 37 36 24 32 38 48 38 53 31 31 94 39 51
8 | 63 69 36 38 40 32 45 65 52 15 45 20 51 60 29
9 | 49 62 39 29 72 18 39 61 60 15 22 26 43 47 43
10 | 44 62 37 13 55 36 35 29 38 20 21 33 54 45 64
11 | 26 58 39 17 45 15 22 17 33 14 18 27 22 52 74
12 | 22 30 11 49 11 27 43 32 13 8 8 37 21 22
13 | 27 24 22 15 15 17 18 21 10 15 9 20 23 18
14 | 12 11 11 10 27 23 31 21 13 6 10 21 11 6 13
15 | 9 17 10 8 22 9 14 12 7 3 6 9 11 14 8
16 | 13 7 5 4 17 13 18 35 8 7 8 10 23 9 19
17 | 11 5 8 73 9 10 15 10 12 7 3 11 15 5 11
18 | 10 12 14 7 21 20 15 10 13 14 5 10 24 13 18
19 | 17 10 12 12 12 22 18 18 18 15 12 13 22 17 20
20 | 25 27 42 39 15 32 27 27 18 17 18 16 29 31 40
21 | 19 15 13 13 13 21 23 21 25 18 20 26 20 20 49
22 | 11 9 5 6 10 10 4 12 10 15 7 8 18 5 17
23 | 10 13 11 13 7 12 9 13 10 14 3 17 8 16 9
---+------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
----------------------------------------------------------------
| Oct 2000 | 10x % reflec. time | horiz: day | vert: time in UT|
--------------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---+----------------------------------------------------------------
0 | 24 32 15 26 20 37 24 47 15 12 16 21 8 10 14
1 | 14 33 18 36 26 43 45 44 26 29 24 17 15 17 19
2 | 38 75 20 46 28 64 79 46 27 43 31 32 37 23 26
3 | 46 70 38 115 61 119 82 72 45 40 54 39 43 33 22
4 | 25 79 35 75 35 93 84 61 59 36 46 34 66 49 39
5 | 70 67 60 84 56 79 52 85 79 38 56 62 50 34 59
6 | 54 48 46 54 41 61 44 36 61 25 55 45 52 19 17
7 | 38 21 55 15 40 43 10 74 45 59 54 51
8 | 61 17 41 16 40 44 25 24 32 71 29 25 55
9 | 19 46 6 50 23 90 37 24 28 21 21 19 20 59
10 | 31 25 13 23 15 43 26 12 22 18 16 13 27 36
11 | 32 70 28 11 19 14 45 24 13 14 15 21 28 25
12 | 21 13 8 13 11 80 19 15 30 12 16 13 17 12
13 | 19 7 33 7 11 12 23 11 27 40 28 42 19 27
14 | 9 4 10 10 10 16 14 6 11 11 10 11 16 17
15 | 8 6 13 5 7 20 17 8 23 6 14 11 15 21
16 | 14 5 14 5 12 9 11 6 9 11 7 6 6 13
17 | 15 6 7 4 9 11 11 7 8 10 12 5 23 6
18 | 13 3 11 9 9 10 19 4 12 8 6 5 10 9
19 | 18 17 13 7 21 14 15 9 14 24 9 10 21 18
20 | 30 17 40 28 27 26 15 11 21 13 14 12 21 17
21 | 17 15 22 13 67 22 26 16 16 11 19 10 21 18
22 | 16 10 10 7 9 11 10 4 7 15 4 13 10 13
23 | 32 7 28 20 16 14 20 12 12 9 10 10 17 18
---+----------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Note:
. nothing special to mention, besides the fact that the first autumn
storm downed the antenna on the roof of university building S9
on Oct 30 between 7 and 8 h UT.
Pierre De Groote
---------------------------------------------------------------------------
Observer: Rafael Haag
Location: Porto Alegre - Brazil (51 15' W, 30 10' S)
Frequency: 89.9 MHz
Receiver: Home made transverter plus narrow band FM(ICV-68) (B=15 kHz)
detected signal level >-125 dBm.
FM detection, no pulse noise rejection required.
Antenna: 2-el. Yagi, 6 meters high, azimuth 200 deg, polarisation V,
elevation: 30 deg
Data sampling system: PC 286. Software same Ilkka Yrjola, threshold
triggering.
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.
Oct 2000 horiz: day vert: local time (LT) (UT=LT+2)
------------------------------------------------------------------
LT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
-----+------------------------------------------------------------
0h | 56 32 42 79 71 58 52 57 59 44 77 PP 49 70 ??
1 | 71 42 49 67 63 73 67 59 69 52 73 PP 62 71 52
2 | 79 64 121 73 63 89 73 63 94 71 84 PP 69 83 68
3 | 91 99 98 95 99 95 88 68 109 92 111 103 66 123 79
4 | 87 121 111 84 92 139 92 82 115 89 121 117 69 102 42
5 | 99 124 125 146 100 124 74 79 127 78 139 141 72 121 53
6 | 113 134 129 127 105 123 89 72 123 95 101 99 70 84 71
7 | 88 122 131 92 130 99 71 89 123 99 85 94 54 68 57
8 | 99 112 138 86 70 82 49 74 53 93 67 79 51 53 59
9 | 68 95 127 67 74 79 56 71 91 67 51 56 49 61 75
10 | 62 88 100 86 72 62 63 52 62 41 50 44 34 47 48
11 | 72 72 82 68 50 51 70 55 48 30 39 39 36 39 49
12 | 55 61 72 32 39 59 33 53 35 45 27 37 20 32 33
13 | 49 44 62 39 49 40 19 26 37 35 30 41 24 19 28
14 | 34 39 55 24 32 18 39 28 44 57 19 27 16 36 33
15 | 29 30 39 21 27 22 30 17 23 27 32 19 19 29 25
16 | 35 31 31 13 23 19 23 15 19 19 34 20 17 30 21
17 | 24 29 30 18 31 30 18 29 24 27 23 19 20 15 26
18 | 24 27 26 16 33 28 29 32 37 31 29 31 29 28 21
19 | 49 30 29 31 40 29 27 40 42 39 32 42 33 29 39
20 | 41 ?? 31 41 39 48 38 41 32 ?? PP 49 51 ?? 48
21 | 31 ?? 42 55 36 40 40 38 27 ?? PP ?? 59 ?? ??
22 | 19 35 48 76 39 38 44 42 33 ?? PP ?? 33 ?? ??
23 | 32 44 42 43 49 43 54 43 39 ?? PP 39 46 ?? 42
-----+------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Oct 2000 horiz: day vert: local time (LT) (UT=LT+2)
------------------------------------------------------------------
LT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
-----+------------------------------------------------------------
0h | 59 57 49 53 56 54 48 52 79 72 ?? 47 40 76 57
1 | 65 52 57 66 67 64 62 67 73 73 76 55 72 82 69
2 | 54 64 71 97 80 92 79 86 120 97 89 86 84 88 91
3 | 66 76 99 110 86 107 129 128 137 114 104 116 70 110 100
4 | 78 83 86 95 78 131 132 118 159 132 112 97 89 119 84
5 | 93 65 90 94 79 149 138 133 129 162 121 84 98 85 63
6 | 76 49 84 88 58 169 59 102 132 148 98 71 103 104 61
7 | 77 53 56 75 44 133 87 97 88 126 105 70 75 94 70
8 | 69 58 34 58 65 121 67 85 91 79 56 49 58 75 59
9 | 57 78 23 48 40 77 75 90 77 66 61 42 70 47 57
10 | 48 63 20 42 41 42 44 79 69 57 43 38 63 51 42
11 | 37 52 30 39 33 34 47 65 57 41 39 42 37 37 43
12 | 34 54 32 40 27 26 37 40 43 30 37 30 39 22 51
13 | 27 39 29 28 42 26 29 42 57 33 35 29 33 29 47
14 | 23 44 29 19 25 19 27 35 39 33 29 32 26 21 32
15 | 20 24 27 16 19 15 25 29 40 21 27 25 33 39 36
16 | 19 29 24 19 15 18 20 24 27 27 24 20 23 27 27
17 | 24 28 26 17 14 14 22 26 30 28 18 22 22 24 26
18 | 21 31 30 21 20 15 24 17 19 29 21 19 26 27 28
19 | 30 28 39 25 24 18 32 31 28 ?? 15 21 30 29 19
20 | 35 ?? 37 ?? 29 22 36 25 39 ?? 26 34 41 38 32
21 | 34 ?? 48 ?? ?? ?? 24 32 44 ?? 32 27 44 33 43
22 | 41 ?? 32 67 ?? ?? 51 45 40 ?? 39 21 38 42 47
23 | 45 47 51 70 47 36 39 63 58 ?? 43 29 49 48 46
-----+------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Notes:
. PP = power failure
. ?? = transequatorial propagation, interference from Caribbean and
Peru stations.
Rafael Haag
---------------------------------------------------------------------------
Observer: H. W. Kelsey
Location: Conway, Arkansas USA (92 25' W, 35 02' N)
Frequency: 89.5 MHz
Transmitter: Tulsa OK & Salina/Manhattan KS
Receiver: Sangean 803A
Antenna: Yagi Heading: SNW
Observing Method: Recorded on Audio Tape
Underdense/Overdense Scale:
Overdense: 0.5 second or more duration
Underdense: less than 0.5 second duration
Each observed hour is 60 minutes, exactly
Oct Over- Under-
2000 Hr-UT dense dense Total
_______________________________________________
01 0730-0830 8 15 23
02 1330-1430 Lost to Tropo Ducting (TD) Daylight (DL)
03 0730-0830 9 19 28
04 0800-0900 10 17 27
05 0700-0800 8 11 19
06 0730-0830 14 19 33
07 0730-0830 5 26 31
08 0730-0830 20 30 50
09 0730-0830 9 18 27
10 0730-0830 6 7 13
11 0715-0815 7 15 22
12 0715-0815 Lost to Tropo Ducting (TD)
13 1000-1100 3 18 21
14 0900-1000 11 16 27
15 0900-1000 21 39 60
16 0900-1000 31 48 79
17 0900-1000 14 19 33
18 0845-0945 7 18 25
19 0700-0800 5 12 17
20 0700-0800 18 14 32
21 0700-0800 21 38 59
1245-1345 7 23 30
22 0645-0745 15 27 42
23 0645-0745 8 10 18
24 0645-0745 3 16 19
25 0645-0745 24 15 39
27 0800-0900 8 9 17
28 0830-0930 5 12 17
29 0930-1030 5 13 18
30 0930-1030 15 22 35
31 0930-1030 8 17 25
Will Kelsey
---------------------------------------------------------------------------
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
2000
Sep|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
Sep|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 |28 60 65 65 61@51@55@37@48@31@29@34 29 23 16 19 18 15 18 26 39 33 47 43
2 |50 46 48 65 42 49 44 44@55 25 13 25 28 23 26 21 18@15@12 12 29 39 47 37
3 |36 60 62 59 56@54@48 41 -- 9 18 21 21@21 n n 5 11 22 16 22 42 42 37
4 |53 63 58 78 75 65 75 80@51 38 30 14 44 33 14 25 22 19 20 19 23 42 58 55
5 |54 58 72 69 68 67 61@68@42 36 25 24 30 24 29 29 28 18 21 13 24 50 52 60
6 |53 57 55 63 47 66 57 60@45 42 35 14 20 19 29 32 15 24 14 17 22 30 45 45
7 |42 43 52 49 46 51 61 46@32 26 17 29 24 20 18 8 11 13 8 21 29 36 34 42
8 |34 43 51 65 71 48 41 44@28 25 19 20 22 28 13 9 13 9 11 20 16 35 37 29
9 |35 44 52 47 43 49 38 36@28 25 19 19 21 15 15 n n@13 21 17 18 35 30 36
10 |36 51 47 49 37 49 45@28@23 26 16 17 14 19 18 24 16 7 12 16 11 25 31 43
11 |25 50 59 42 26 23 25 25@54 41 23 31 23 29 25 20 e e 29 29 26 39 51 32
12 |47 51 49 73 56 62 52 64@48 48 32 21 35 27 19 29 n@18 21 15 23 33 36 44
13 |36 36 48 65 63 37 58 39@40 24 21 23 21 28 19 25@13 e@13 22 10 32 36 32
14 |51 51 51 62 49 46 59 60@40 32 23 20 23 15@28 n n n 16 8 15 26 36 26
15 |33 42 58 59 51 51 53 54@55 20 @7 14 18 16 14 14 n 9 16 10 25 34 26 28
16 |32 38 57 38 46 52@33@27@24 23 23 28 28 16 6 23 9 19 18 18 25 37 46 42
17 |33 46 55 51 60 55@34 30@32 30 19 26 26 19 22 29 9 17 14 12 21 34 45 43
18 |37 52 59 67 62 51 70 36@27 16 16 7 10 14 8 10 6 17 13 15 23 41 44 40
19 |44 51 77 87 55 59 53 56@30 24 14@14 n 14 6 9@24 9 15 17 20 40 42 39
20 |30 62 76 46 54 56 57 53@20 21 13 10 13 12 21 10 e e 11 9 13 n n n
21 |23 n 61 66 47 63 55 59@21 16 12 6 13 19 e e@14 n 24 13 21 30 50 43
22 |33 35 42 60 e@42@43 38@21 13 10 11 14 16 9 11 n 7 11 20 16 53 49 40
23 |40 41 72 59 62 64 55 52@38 25 23 29 41 29 24 28 23 15 24 16 19 39 37 48
24 |47 40 43 51 67 65 71 47@30 36 20 15 7 13 16@14 18 17 26 17 25 35 22 36
25 |28 61 84 78 79 52 70@24@23 n @9 14 10 11 5 14 16@24 21 23 26 36 30 37
26 |53 68 56 52 82 56 48 34@27 13 10 15 10 7 6 5 9 15 14 11 25 45 40 42
27 |50 53 79 67 66 83 65 37 n n n 12 15 7 1 2 6 14 13 10 16 28 44 49
28 |54 57 74 60 79 73 83 30@34 11 n@19 9 8 6 8@13 19 n@19 15 26 57 37
29 |46 42 67 68 53 67 88 62@36 36 17 20 22 21 14 n n 20 14@18@25 n n n
30 | e@47@40 46 55 66 69 60 n 14 17 27 38 22 26@16 n 15 9 11 25 47 42 45
---+--------------------------------------------------------------------------
Sep|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
Sep|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
2000
Echoes with duration > 5 s
2000
Sep|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
Sep|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 2 3 3 8 4 3 2 1 2 1 1 2 1 2 2 1 1 2
2 | 3 1 3 2 1 3 6 3 4 2 1 1 1 1 1 1 2 2 1 3
3 | 3 3 7 3 3 1 4 3 1 2 5 3 2 2 1 1
4 | 2 2 6 4 4 2 5 2 7 4 4 1 2 3 1 1 1 1
5 | 2 2 6 6 2 7 2 1 3 1 1 3 3 1
6 | 2 2 6 4 2 2 3 7 3 2 2 2 1 2 1 1 3 1
7 | 2 2 4 2 1 9 4 2 1 1 1 2 2 1 1 1 2
8 | 2 3 4 3 3 6 3 4 5 2 1 1 2 1 1
9 | 5 2 3 2 1 2 3 2 5 3 2 1 2 1 2 2 1
10 | 2 1 3 2 5 5 1 1 1 1 2 1 1 1
11 | 4 1 1 1 3 3 2 2 2 2 1 3 1 1
12 | 1 3 3 3 10 7 5 8 5 3 2 2 3 1 1 1 1 1 1
13 | 1 2 2 2 5 4 4 2 1 2 1 1 1 3 1 1 1
14 | 1 5 3 3 2 2 6 3 1 2 1 1 3 3
15 | 1 4 2 2 1 4 1 1 1 3 1 1
16 | 1 1 2 5 2 2 3 1 2 1 1 1 2 1 1 1 2 1
17 | 1 1 4 2 4 6 2 1 2 1 1 1 1 1 3
18 | 1 2 5 3 1 4 2 3 2 1 1 1 1 1 1
19 | 3 1 7 5 6 4 6 8 1 1 2 2 1 3 1
20 | 1 6 3 1 3 6 1 4 2 1 1 1
21 | 2 2 6 4 5 1 6 3 1 2 2
22 | 3 2 2 2 2 1 1 3 1 1 1 1 1 2
23 | 1 1 3 3 3 5 1 3 3 1 1 1 2 2
24 | 1 1 2 4 1 3 5 1 1 1 1 2 1
25 | 1 2 3 2 2 3 3 2 1 2
26 | 3 2 1 2 4 2 3 1 1
27 | 2 4 4 1 1 4 4 2 1 1 1 1 2 2
28 | 3 2 2 4 3 4 5 2 2 2 3
29 | 1 6 2 4 6 3 3 1 2 2 2 2 1
30 | 2 2 4 8 4 1 1 1 2 1 1 1 1 2 1 1
---+--------------------------------------------------------------------------
Sep|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
Sep|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
2000
Daily rate of long echoes (T > 20 s)
2000
Sep 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
----------------------------------------------------------------
Count 6 4 3 1 4 4 3 4 2 0 2 5 2 4 0
Sep 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
----------------------------------------------------------------
Count 3 5 0 6 4 0 4 1 2 1 2 2 3 4 2
Hourly echoes over 10 dB SNR
2000
Oct|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
Oct|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|43 41 59 80 44 38 44 56 n@39@28 17 9 n n n n n 21 21 16 n n 23
2|51 50 63 67 57 54@76@60@44 39 36 29 27 27 21 n n n n n 20 e e 24
3|42 49 75 65 52 49 86 61 55 32 35 16 14 15 9 n n 12@23 20 17 48 49 57
4|75 61 92 92 49 66 67 68@38 20 16 18 25 17 11 11 9 17 11 10 23 45 46 48
5|62 67 89 86 58 52 74 83@35 29 24 n 13 13 14 16 27 20 17 21 28 60 55 48
6|61 65 79 88 66 77 81 56@24@24 n e n 20 14 e e e n@19@12 14 e n
7| n 45 86 78 71 56 69 44@24 n n 22 28 20 14 22 n n 11 14 29 46 27 40
8|55 53 91 59 48 70 53 55@47 19 19 19 25@12 e n n n@21 14 32 n 23 31
9|35 69 70 81 58 61 61 67@48 29 33 39 21 18 15 20 15 15 16 20 43 33 33 28
10|63 63 57 75 72 63 92 54@32 25 18 24 15 18 28 n n 18 16 20 33@32 31 41
11|41 67 75 77 67 49 60 41@39 32 24 16 n 16 19 n n@16 16 7 12 48 n n
12| e e 63 64 67 58 53 48@28 11 12 10 e e e n@12 13 12 n n n e e
13| e 70 69 86 83 44 48 53@31 33 24 6@12 e n n n n 10 12 29 46 57 52
14|44 71 82 67 75 75 70 44@30 14 n n 8 10 n 6@13 21 14@14 18 38 43 35
15|47 65 81 79 53 51 60 48@36 n n e e n n n n@13 19 14 25 25 43 35
16|47 53 74 71 77 52 72 62@36 34 25 13 20 n n n n n n@11 23 40 37 47
17|38 58 97 68 76 73 63 58@51 43 17 15 17 27 n n n n n n 26 48 37 24
18|23 68 73 96 57 42 48 54@27 42 23 29 26 18 17 n n n n@19 16 n n n
19|27 58 73 78 72 72 61 49@39 29 24 20 20 13 12 23 19 15 16 26 28 53 45 37
20|44 56 73 73 81 68 61 63@43 24 30 23 26 20 27 n n n n 18@19 n 31 44
21|45 64 84 81 79 74 55 58@48 25 30@20 24 6 @9 e n 21 15 18 14 40 43 32
22|46 80 78 75 71 71 78 69@51 39 35 26 23 27 17 e 20 20 22 12 21 41 44 53
23|41 59 66 64 62 72 66 65@32 32 n 29 36 30 23 18 16 7 15 13 28 19 37 28
24|37 52 61 63 51 59 58 61@45 33 19 19 25 28 15 13 e @9 18 15 20 37 41 40
25|44 65 77 60 58 64 63 49@49 44 30 22 e 29 n n n n n@15 26 35 55 26
26|38 58 65 52 64 81 70 66@39 42 26 24 16 17 n n n n 20 30 31@40 25@26
27|48 52 60 53 69 51 58 51@33 20 18 17 12@25 n n n n n e e n 34 35
28|37 47 83 75 63 60 54 63@42 25 40 30@29 n n@16 21 19 22 16 23 17 37 29
29|34 56 61 70 58 57 70 52@50 47 37 25 27 20 22 18 22 13 18 16 19 32 47 41
30|37 40 60 47 60 45 55@64@48 38 17 24 n n n @5 18 n n 17 24 33 44 44
31|42 58 60 62 64 71 60 55@61 21 20 n n n n n n n n n n n 29 41
---+--------------------------------------------------------------------------
Oct|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
Oct|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
2000
Echoes with duration > 5 s
2000
Oct|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
Oct|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| 1 1 3 4 3 1 3 3 1 2 1 1
2| 1 3 4 5 5 1 3 6 3 3 3 1 1
3| 1 1 3 1 2 3 6 4 3 3 2 2 2 1 1 1 4 1
4| 5 1 1 4 2 7 3 1 1 2 1 1 1 1 1
5| 1 2 1 3 6 2 6 2 1 2 4 1 1 1 5 4 4
6| 1 2 3 3 2 3 7 5 1 1 1 1 2
7| 3 2 4 3 1 1 3 1 2 1 1 1
8| 1 3 1 5 5 5 5 3 2 2 1 1
9| 1 1 1 7 5 5 7 2 1 1 1 1
10| 3 2 1 6 6 4 3 3 2 1 1 1 1 1 1
11| 1 1 3 1 2 5 5 1 1 1 1 2
12| 2 2 4 5 2 1
13| 3 4 3 1 3 2 2 2 3 2 1 1 1 1
14| 2 6 2 1 2 2 1 1 1 1 2 1 1 3 2
15| 3 1 3 2 2 3 2 4 1 1 1 2 2 3
16| 3 2 6 4 3 2 8 1 1 2 3 2 2
17| 1 4 5 10 6 9 2 1 2 2 2 3 2
18| 5 1 7 4 2 3 3 4 3 1 1
19| 1 2 11 7 6 5 3 5 1 3 1 4 1 3 1 3
20| 5 3 3 4 2 6 3 5 1 1 1 1 2 1
21| 4 4 2 6 5 3 4 3 1 5 2 1 1 1 1 3 2
22| 2 4 5 6 3 6 6 4 2 1 1 1 1 1 2 1
23| 2 8 2 5 4 8 4 3 2 1 4 2 3 1 3 1
24| 5 3 2 3 2 4 3 3 3 1 1 1 2 1 1 1
25| 3 6 4 1 4 2 8 2 1 1 2 1 1
26| 3 7 5 3 2 3 3 2 2 2 1 1 2
27| 1 4 1 4 3 3 7 4 1 1
28| 2 7 3 3 1 7 2 1 3 2 2 1 1
29| 1 3 3 3 3 4 3 3 1 2 2 1 3 1 1 1 1 1
30| 2 1 1 5 2 4 5 2 1 4 2 1 1
31| 2 2 1 2 3 4 2 4 3
---+--------------------------------------------------------------------------
Oct|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
Oct|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
2000
Daily rate of long echoes (T > 20 s)
2000
Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---------------------------------------------------------------------
Count 0 2 2 4 6 1 2 1 2 1 0 6 2 0 1
Oct 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---------------------------------------------------------------------
Count 0 1 6 4 1 3 12 7 0 4 7 3 4 4 2 3
Notes:
. Giacobinids activity could not clearly be observed.
. The maximum of the Orionids activity was best observed in the long echoes
on 22th October.
-: 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 h
Sadao Okamoto
---------------------------------------------------------------------------
Observer: Ton Schoenmaker
Location: Roden, Netherlands (06 26' E, 53 08' N)
Frequency: 55.275 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 ~ 1500 km
Antenna: 3-elements horizontal Cushcraft 50 MHz Yagi tuned to 55.3 MHz;
geographical azimuth 210 degrees (SW)
Receiver: Yupiteru MVT-9000 in USB mode; sensitivity 0.5 uV at 12 dB S/N
Observing: 800 Hz audio signal from ear-phone socket was rectified,
digitised
and fed into a PC via the parallel computer port. HP VEE was
used
to process the digitised signal and to store 15-minutes counts of
reflections stronger than 0.22 uV (-120 dBm). Also for all
individual meteors date, time, duration (dead time) and maximum
signal are stored.
Uncorrected hourly counts for signals stronger than 0.22 uV
| October 2000
UT | 04 05 06 07 08 09 10 16 17 18 19 20 21 22 23 24
----+-<--------DRACONIDS------->----<--------------ORIONIDS---------->
00h| - 298 375 370 316 396 336 - 249 314 323 344 353 345 355 267
01 | - 304 387 372 363 451 336 - 278 344 389 351 422 425 367 372
02 | - 405 459 429 452 * 397 - 344 446 * 449 462 457 424 394
03 | - 427 474 438 493 441 451 - 299 423 * 440 459 556 449 401
04 | - 355 421 435 489 417 469 - 283 383 * 435 359 467 386 354
05 | - * 440 351 389 417 411 - 311 341 346 389 352 346 358 356
06 | - * 453 333 372 363 407 - 350 342 397 375 328 421 390 *
07 | - * 428 343 384 415 383 - 320 340 407 * 364 411 469 383
08 | - * 465 408 451 468 267 - 394 375 454 367 383 331 454 418
09 | - * 409 437 456 419 468 - 348 322 377 359 449 288 438 345
10 | - * 440 458 383 357 408 - * 328 343 285 314 193 * 340
11 | - 402 * 401 382 323 310 - 274 248 244 250 266 202 328 250
12 | - 323 312 331 366 314 335 - 235 278 186 258 256 196 236 270
13 | - 369 312 285 296 258 301 - 184 229 182 249 266 176 226 263
14 | - 346 221 282 257 228 251 - 179 203 232 * 251 256 236 254
15 | - 313 248 230 214 202 238 - 199 183 194 129 192 209 211 208
16 | - 237 165 193 189 165 190 - 140 124 191 174 171 208 168 160
17 | - 177 154 152 150 160 143 - 136 142 161 143 143 155 * 136
18 | - 179 145 169 127 131 122 - 153 143 166 186 153 157 150 -
19 | - 146 237 156 169 230 - - 168 175 * 188 204 195 197 -
20 | - 231 235 214 250 238 - 175 191 243 193 191 235 260 * -
21 |279 286 329 * 338 255 - 235 235 244 215 241 267 277 253 -
22 |285 326 345 313 364 317 - 235 273 312 256 259 337 306 269 -
23 |320 384 355 321 354 356 - 237 293 319 328 321 345 308 282 -
----+-<--------DRACONIDS------->----<--------------ORIONIDS---------->
UT | 04 05 06 07 08 09 10 16 17 18 19 20 21 22 23 24
| October 2000
Notes:
. - no observations
. * affected by ionospheric or tropospheric propagation
Ton Schoenmaker
---------------------------------------------------------------------------
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).
Sensitivity NFM: 0.5 uV (S+N)/N = 20 dB Dev: 3 kHz
at 1 kHz BW 9 kHz. Calibrated: 1/05/00
Antenna: 4 element Yagi broadband design for 50-70 MHz Gain 9.2 dBi.
Azimuth 95deg elevation 8 deg. Two 3 stage constant K
filters fitted after the antenna, (High and Low pass)
to reduce out of band interference and
intermodulation products causing spurious meteor counts.
Frequency: 66.62 MHz
Transmitter: Budapest 100 kW 24 hrs
Computer: Olivetti 386 Notebook with Meteor v 4.0 software
| October 2000
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
00 | 9 16 9 5 14 16 8 6 8 14 13 11 7 15 5
01 | 4 9 5 13 14 12 11 19 12 7 10 10 11 8 10
02 | 12 12 10 7 2 6 9 7 12 15 14 13 14 14 18
03 | 19 14 13 6 8 8 12 12 13 18 10 3 5 10 18
04 | 10 4 6 12 10 14 17 10 16 11 15 18 20 16 9
05 | 13 8 10 18 11 15 13 17 16 12 12 14 12 20 12
06 | 8 9 4 10 20 9 10 14 10 10 9 17 22 11 11
07 | 11 11 11 7 12 10 10 18 5 14 11 8 12 16 10
08 | 11 11 13 15 14 10 14 14 6 12 18 11 5 14 7
09 | 6 7 12 14 16 14 7 19 6 7 7 15 12 20 7
10 | 7 18 14 7 10 14 7 11 13 14 9 17 13 18 14
11 | 13 13 9 9 6 11 11 9 12 18 11 11 8 19 11
12 | 12 16 9 10 13 14 11 12 13 9 14 13 14 15 10
13 | 13 9 16 14 11 8 9 12 10 13 13 14 15 7 7
14 | 9 9 6 7 7 12 12 3 11 14 11 15 17 8 13
15 | 15 13 15 9 15 9 8 14 6 8 13 9 10 13 13
16 | 7 10 4 16 11 15 19 1 17 10 10 8 13 10 13
17 | 12 12 12 17 8 10 13 14 12 15 11 9 11 12 14
18 | 11 9 9 9 15 8 9 8 3 14 8 10 14 16 3
19 | 15 13 15 16 12 9 16 10 13 10 10 15 12 9 15
20 | 10 10 9 14 4 8 10 13 13 12 13 10 7 20 12
21 | 17 11 13 12 12 13 11 5 7 10 17 10 7 12 9
22 | 9 22 8 12 10 15 15 14 16 8 8 13 9 14 13
23 | 3 9 12 11 15 9 9 15 9 12 19 10 11 14 12
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| October 2000
| October 2000
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---+---------------------------------------------------------------
00 | 5 15 10 9 F 17 16 22 10 11 F 13 13 14 6 13
01 | 14 14 13 10 F 16 13 8 14 16 F 16 10 13 15 9
02 | 14 8 15 10 F 15 13 13 10 10 F 14 19 9 12 6
03 | 14 6 21 14 F 10 18 15 8 16 F 15 23 14 10 6
04 | 9 17 3 11 F 16 11 18 6 0 F 16 17 11 15 4
05 | 18 12 15 10 F 8 21 11 4 14 F 6 14 12 13 4
06 | 13 6 16 19 F 13 12 13 15 20 F 21 19 17 12 6
07 | 13 13 7 13 2 20 23 13 19 11 F 19 11 8 7 1
08 | 10 14 7 17 12 15 15 13 8 19 F 9 14 10 14 3
09 | 9 7 16 4 10 15 12 24 13 14 F 11 15 8 25 7
10 | 9 12 12 3 20 15 4 11 12 13 8 6 11 10 14 3
11 | 15 12 13 15 14 17 11 10 11 13 16 14 12 18 21 12
12 | 9 5 12 13 12 16 8 10 10 16 5 18 15 12 19 8
13 | 10 6 13 16 9 14 4 3 15 16 1 25 12 12 15 7
14 | 18 9 12 13 17 21 15 10 15 15 5 12 12 21 8 5
15 | 8 11 9 15 12 18 10 11 8 F 5 11 11 10 4 5
16 | 10 16 12 11 13 9 11 8 14 F 9 17 12 11 2 3
17 | 10 11 11 9 10 17 13 10 12 F 7 17 10 18 10 4
18 | 14 4 13 7 18 22 30 6 22 F 13 13 15 15 12 2
19 | 13 9 8 12 12 19 22 14 22 F 10 13 27 20 7 10
20 | 9 12 10 12 11 14 11 8 7 F 9 10 20 20 4 5
21 | 8 11 9 10 9 18 10 7 16 F 15 21 18 11 2 12
22 | 7 8 11 F 19 14 12 10 12 F 11 14 9 19 8 6
23 | 16 14 13 F 13 10 7 8 18 F 12 10 8 22 5 4
---+---------------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
| October 2000
Note:
. computer failure (F) resulted in loss of data 19/20 and 25/26 Oct.
Back up system has been in operation from the 20 October: Rx AOR 3000A,
5 element Yagi Az 95 deg El 10 deg, 486 and Meteorv4.
Dave Swan
---------------------------------------------------------------------------
Observer: Pierre Terrier
Location: Canet, France (3 36'E, 43 41' N)
Frequencies: 96.8 MHz (changed since previous report)
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 IBM 386 25 MHz.
METEOR v 4.0 version processes the signal and records on
hard disk the time of the events.
METEOR parameters: THRESHOLD = 16
COLORGRAMME v 1.5 generates RMOB bulletin automatically
| October 2000
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 6 15 8 21 27 18 16 17 9 22 18 10 9 10 27
1 | 11 16 8 16 16 18 12 26 17 18 22 16 12 11 19
2 | 21 24 4 26 22 27 12 25 23 28 18 12 6 12 18
3 | 25 36 15 23 23 20 19 20 15 25 15 8 12 12 20
4 | 18 40 16 17 35 30 19 26 14 11 10 10 18 21 21
5 | 20 28 15 29 27 33 14 26 15 12 13 14 7 14 33
6 | 13 12 13 19 25 28 18 20 19 13 18 21 8 10 35
7 | 24 11 11 26 23 25 18 12 15 10 10 12 8 14 16
8 | 14 9 16 24 25 23 14 17 22 5 10 11 7 9 21
9 | 13 13 13 16 22 15 15 11 19 14 13 13 4 13 20
10 | 10 11 19 15 27 15 11 10 12 10 15 19 7 9 11
11 | 9 10 11 21 16 16 6 4 9 8 7 7 8 10 11
12 | 16 10 13 14 18 13 12 9 14 5 13 9 5 8 9
13 | 12 9 10 8 6 8 7 10 3 3 6 11 7 10 9
14 | 7 2 7 10 11 8 9 6 8 7 5 12 1 7 7
15 | 7 7 2 7 14 9 7 3 3 3 7 2 3 2 4
16 | 5 6 5 6 6 12 7 7 5 7 4 3 8 5 6
17 | 5 8 5 2 8 8 6 3 4 1 2 2 6 7 6
18 | 9 4 9 11 8 12 6 8 4 4 4 5 7 7 5
19 | 11 12 12 6 12 13 7 10 2 6 8 5 8 6 5
20 | 16 12 16 10 13 12 7 8 14 8 7 6 7 9 5
21 | 11 12 16 13 22 16 14 10 9 3 6 8 13 15 8
22 | 9 4 13 17 17 19 10 14 18 9 5 13 11 18 9
23 | 25 7 12 17 23 11 17 6 10 14 10 6 9 18 14
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| October 2000
| October 2000
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 11 22 19 17 18 23 18 19 11 16 11 16 12 22 22
1 | 16 20 14 17 33 33 14 30 15 18 20 11 13 22 18
2 | 20 11 19 25 34 36 23 18 13 17 17 8 17 34 11
3 | 24 14 20 18 27 20 14 20 5 14 16 19 18 27 18
4 | 17 17 10 20 28 29 14 23 12 29 13 15 9 32 19
5 | 16 17 14 12 21 23 18 16 9 30 10 14 10 31 14
6 | 9 15 17 19 18 14 11 25 14 15 17 12 14 25 21
7 | 16 7 15 16 16 7 10 12 14 12 12 9 15 25 12
8 | 12 9 15 18 19 17 11 17 11 14 15 11 13 14 4
9 | 14 9 13 16 18 9 16 12 6 12 11 10 20 12 17
10 | 13 15 11 14 23 6 8 17 11 7 16 13 12 14 16
11 | 9 8 13 11 13 9 7 12 7 5 13 8 7 9 16
12 | 11 15 6 8 10 8 2 7 6 10 1 6 12 8 13
13 | 6 9 7 9 6 4 8 7 7 10 4 7 7 12 5
14 | 8 6 10 7 9 3 8 4 7 6 13 5 13 5 6
15 | 6 7 6 8 3 6 4 3 5 9 6 10 8 7 5
16 | 3 6 5 4 6 5 7 2 6 3 4 6 8 6 1
17 | 1 7 6 3 5 1 7 3 2 2 4 11 2 3 6
18 | 4 6 5 7 12 9 4 1 9 6 5 17 11 5 6
19 | 14 6 14 2 8 6 8 4 5 5 6 10 7 7 8
20 | 7 11 10 10 7 5 7 9 12 6 9 12 10 8 11
21 | 15 14 10 7 17 7 6 1 18 7 18 13 21 14 5
22 | 9 12 11 10 17 8 11 12 18 13 11 17 26 9 6
23 | 13 18 13 10 18 6 12 7 18 16 7 10 20 12 12
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| October 2000
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 1225 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 920 Hz voice signal (by FFTDSP) is
received by a low frequency filter (900 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.
October 2000
2000|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Oct|16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
----+-------------------------------------------------------------------------
2 | - 6 7 6 8 8 6 - - 5 5 6 8 5 - - - - - - - - - -
7 | - - - - - - - - - - - - - - - - - E 6 5 3 3 6 4
8 | 3 6 8 6 7 6 6 4 12 5 4 5 4 5 6 - - - - - - - - -
14 | - - - - - - - - - - - - - - - - - - - - - 4 3 5
15 | 5 5 6 6 5 5 3 3 4 7 6 E - - - - - - - - - - -
-
21 | - - - - - - - - - - - - - - - E 8 E E E 10 11 12 13
22 | - 8 18 14 16 9 14 13 12 11 6 6 7 12 7 - - - - - - - -
-
27 | - - - - - - - - - - - - - - - - - - - 3 8 6 5
5
28 | 7 8 10 12 11 10 9 10 10 8 6 7 6 7 8 6 10 7 6 5 5 5 8 11
29 |12 16 17 26 15 18 10 12 8 13 9 8 11 12 7 - - - - - - - -
-
----+-------------------------------------------------------------------------
Oct|16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
2000|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
October strong and long lasting echoes list
LT strength duration
dBi s
Oct 21 02h40m > 120
07h15m > 60
29 00h11m > 20
03h07m > 20
03h27m > 20
03h38m > 20
05h00m > 20
Notes:
. "E" = weak E layer
. "I" = background noise interference affected the normal echoes
. this month, there were less total echoes and long lasting echoes
than during the same month of last year.
Garfield Tsao
---------------------------------------------------------------------------
Observer: Ilkka Yrjölä
Location: Finland (26 35' E, 60 54' N)
Frequency: 88.7 + 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).
Orionids 2000
UT | 18 Oct 19 Oct 20 Oct 21 Oct
----+-------------------------------
0 | 205 150
1 | 153 130 211 144
2 | 144 168 163 152
3 | 100 175 161 205
4 | 120 124 120 132
5 | 237 120
6 | 186 148
7 | 139 163 153
8 | 214 120 242 163
9 | 321 161 109 88
10 | 152 152 128
11 | 305 281 98
12 | 103 100 152
13 | 98 122 124 105
14 | 131 137 113 98
15 | 80 98 115 96
16 | 82 92 105 100
17 | 279 122 334 113
18 | 117 111 124 65
19 | 132 132 36
20 | 328 115 172
21 | 338 86 40
22 | 119 168 173
23 | 107 148 182 144
----+-------------------------------
UT | 18 Oct 19 Oct 20 Oct 21 Oct
Note:
. Since an Estonian local radio came on the air just before the Orionids peak
(Oct 16) on the better FM band frequency wiping out the channel with strong
signals (88.8 MHz), the data is taken only from the weaker channel and
seems to be not
scaled too well (loo low), and it suffered from short periods of tropo.
Since I have been forced to change the setup again, I do not have much
motivation
to re-scaling just Orionids data, because of the temporary nature of the
situation
during Orionids. I do not know on any outburst from this year's Orionids and
suspect it behaved in normal fashion.
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 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. 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)
Jean-Louis Aillaud
Sainte Clotilde, Réunion Island
E-mail: jean-louis.aillaud@wanadoo.fr
Michael Boschat
6306 Cork St., Apt.512, Halifax, Nova Scotia, Canada
mailto:andromed@atm.daldot ca
Maurice De Meyere (ON4NU)
Hullekensstraat 24, B-9831 Deurle, Belgium
tel: +32 (9) 282 35 26
mailto:mauricedot de.meyere@econophonedot be
Ghent University, Astronomical Observatory
Krijgslaan 281(S9), B-9000 Gent, Belgium
mailto:Pierredot deGroote@rug.acdot be
Rafael Haag
Porto Alegre, Brazil
mailto:haag@portoweb.com.br
H. W. Kelsey, A.L.P.O.
Conway, Arkansas, USA
mailto:wkelsey@conwaycorpdot net
Alastair McBeath
IMO: International Meteor Organization
12A Prior's Walk, Morpeth, Northumberland, NE61 2RF, England, U.K.
mailto: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
Ton Schoenmaker, Dutch Meteor Society
Meester Homanstraat 8, NL-9301 HP Roden, Netherlands
mailto:schoenmaker@NFRAdot nl
Call: PA0EFA
Chris Steyaert, VVS
Kruisven 66, B-2400 Mol, Belgium
tel: +32 (14) 31 51 04
mailto:steyaert@vvsdot be
Compuserve: 72650,3513
Dave Swan
Christchurch, UK
mailto:daveswan@dorsetpubs.com
Pierre Terrier
Canet (close to Montpellier), France
mailto:pierre.terrier@wanadoo.fr
http://members.tripod.com/~astro_electronic/index.html
Meteor & Colorgramme web site: http://page.to/meteor/
Visual RMOB web site : http://page.to/rmob/
Garfield Tsao (BM2EQB)
LonTan Observatory, LonTan, TauYan, Taiwan
mailto:tsao5916@ms17.hinetdot net
http://www.geocities.com/Eureka/Office/1528 (in Chinese)
Jeroen Van Wassenhove, VVS
Kouterstraat 25, B-9750 Zingem, Belgium
tel: +32 (9) 384 04 12
mailto:100101.734@compuserve.com
Ilkka Yrjölä
Jukolantie 16, FIN-45740 Kuusankoski, Finland
mailto:oh5iy@sci.fi
http://www.sci.fi/~oh5iy/
Call: OH5IY, packet radio: OH5IY@OH5RBG.#KVL.FIN.EU
--
Christian Steyaert (RMOB0010) 8 November 2000
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