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(meteorobs) Radio Meteor Obs. Bull. Jan 2000
Radio Meteor Observation Bulletin No. 78 February 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, Azimut 90 +/-65
Antenna: 6-element Yagi 617-6B, 14 dBd gain.
astronomical azimuth 215 deg (=NE), elevation 0 deg.
Antenna: Six element Yagi 617-6B, 14 dBi gain, horizontal polariz.
Azimuth 200 deg (NE), elevation 20 deg
Receiver: home made converter 20 dB gain, 1 dB noise and Kenwood TS-830S.
10 dB attenuator in the receiver to reduce direct reception
Sensitivity: 0.25 uV for 10 dB S/N
Observing method: the audio signal of the video carrier is received using
a narrow CW filter (500 Hz) and fed into the PC in real time.
Data sampling system: using a super 14 bits A/D card to PC/XT
and "Data Capture" software with 1 second/18 sampling interval
to store all the > 0.5 s reflections.
| Jan 2000
UT | 17 18 20 21 22 23 24 25 26 27 28 29 30 31
----+-------------------------------------------------------
0h| 0 0 0 0 2 7 2 4 8 3 0 0 0 1
1 | 0 0 1 2 3 4 4 4 7 3 0 0 0 0
2 | 0 2 0 2 7 0 1 0 6 1 0 1 1 0
B 3 | 0 7 1 1 1 1 * 5 8 0 0 0 0 0
4 | 0 0 3 4 0 3 5 4 * 4 1 0 0 0
5 | 0 0 1 1 1 13 7 * * 4 0 0 0 0
6 | 0 2 2 3 3 3 6 * 5 * 0 0 0 0
7 | 0 2 1 8 * 4 2 13 5 * 0 0 0 0
8 | 0 0 1 5 * 9 8 21 6 * 5 1 0 1
9 | 0 0 2 12 * 4 4 7 14 23* 2 4 1 0
10 | 0 0 3 2 2 4 2 9 8 5 0 1 0 0
11 | 0 0 1 0 10 0 5 20 1 3 0 0 0 0
12 | 0 0 0 0 0 0 0 8 2 4 0 0 0 0
13 | 0 0 2 1 3 0 3 23 6 1 0 0 0 0
14 | 0 0 2 1 7 1 3 6 27* 2 0 0 0 0
15 | 3 0 0 1 3 0 3 11 13 0 0 0 1 0
16 | 0 0 1 0 3 1 1 8 * 6 0 0 0 0
17 | 0 0 0 0 7 1 3 7 * 9 0 0 0 0
18 | 0 0 1 0 4 9 1 19 * - 0 0 0 0
19 | 0 0 1 5 1 5 5 10 3 2 0 0 1 0
20 | 0 0 7 1 6 11 5 8 2 0 0 0 1 1
21 | 2 0 0 4 9 3 3 13 5 0 1 0 0 0
22 | 0 0 2 4 24 3 5 14 6 0 0 1 0 0
23 | 2 0 1 2 2 4 3 11 0 0 1 0 0
----+-------------------------------------------------------
UT | 17 18 20 21 22 23 24 25 26 27 28 29 30 31
| Jan 2000
Note:
. * local C2 interference or propagation opening
. I am working now with some university students to develop a stable software
using Global MS Network, similar to MCT5.
This software has been written to run in a PC under MS-Dos, Win 3.x or Win
9x (not recommended), with a CGA display, video card or better.
The program is based on the reading of the PARALLEL port, connected to a
hardware which connects Pin 12 and 23 when a reflection occurred and
disconnect when the reflection ends. The program counts number of seconds
that the pins are connected.
The program shows through display BIOS date and time, remaining time to
save data, number of meteors counted in last 10 minutes, a menu and
duration of a meteor.
Data are saved to a text file (dd#mm#yy.min) on hard disk, every 10 minutes,
creating a new file every day. File could be read from any text editor.
The structure of the file is:
Date | Hour_init | Hourr_end | Num_Meteor | Sec_Max_duration
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
January 2000
Number of meteors heard in one hour interval
| UT
Jan | 09h 10 11 12 13 14 15 16 17 18 19 20 21 22 23
----+-----------------------------------------------------------
1 | - - 2 2 - 3 3 - - - - - - - -
2 | - - - - 6 11 9 11 - - - - - - -
3 | - - - - 5 12 22 8 10 16 17 - - - -
4 | - - - 6 5 - - - - - - - - - -
5 | - - - 13 13 11 14 - - - - - - - -
14 | - - - 33 18 15 22 - - - - - - - -
18 | - - 6 9 5 19 8 - - - - - - - -
27 | - - - - - 5 4 - - - - - - - -
----+-----------------------------------------------------------
| 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
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 University of Ghent format (Prometeos), and are
available for further analysis. Reduction software for DOS and
Windows available].
January 2000
Raw counts of reflections with a duration of at least 0.027 s
during one hour interval starting at UT:
Jan | UT
2000 | 21h 22 23 00 01 02 03 04 05 06 07
------+------------------------------------------------------
1- 2 | 91 81 84 114 90 105 109 168 150 101 124
2- 3 | 99 125 153 157 132 107 112 119 96 106 55
3- 4 | 145 190 50 81 52 77 300 133 72 23 134
4- 5 | 55 47 19 12 11 35 75 113 55 44 46
5- 6 | 35 31 21 39 7 16 80 67 38 60 -
6- 7 | 37 39 22 18 11 16 43 55 42 68? 31
7- 8 | 67? 31 17 15 19 18 35 69 43 30 28
8- 9 | 28 26 27 25 18 10 40 67 64 87? 43
9-10 | 25 33 22 26 20 18 49 65 44 47 42
10-11 | 44 31 47 23 16 32 53 51 49 54 56
11-12 | ? ? 54? ? 28 22 54 61 46 40 34
12-13 | 55? 23 16 16 21 28 68 76 46 47 51
13-14 | 14 27 15 12 18 19 67 61 54 65 36
14-15 | ? 45 25 ? 19 38 49 54 51 ? ?
15-16 | 17 25 15 15 19 23 29 48 71 55 73?
16-17 | ? ? ? 53 19 28 60 49 37 54 ?
17-18 | 36 24 12 22 10 19 60 61 41 48 38
18-19 | 44 17 27 31 16 26 49 50 42 38 33
19-20 | 23 21 22 22 13 24 47 51 51 59 47
20-21 | 15 18 8 23 14 11 28 29 39 ? 41
21-22 | 37 24 14 20 15 25 59 48 50 66 58
22-23 |
23-24 | 16 12 21 ? 28 27 48 40 ? ? ?
24-25 | 43 46 ? ? 17 39 45 40 47 72? 39
25-26 | 6 10 13 20 21 18 50 70 38 44 35
26-27 | ? 33 11 25 19 29 44 55 37 44 50
27-28 | 15 24 24 ? 26 19 61 50 41 49 35
28-29 | 19 14 8 20 24 15 25 29 41 38 44
29-30 | 19 17 18 20 6 9 7 61 41 35 ?
30-31 | 16 27 26 9 8 13 38 40 59 28 32
31-01 | 52? 26 12 35 10 12 32 63 39 ? ?
------+------------------------------------------------------
2000 | 21h 22 23 00 01 02 03 04 05 06 07
Jan | UT
Raw counts of reflections with a duration of at least 1.000 s
during one hour interval starting at UT:
Jan | UT
2000 | 21h 22 23 00 01 02 03 04 05 06 07
------+-------------------------------------------------------
1- 2 | 10 11 12 17 4 15 14 21 15 10 16
2- 3 | 14 24 61* 68* 36* 5 9 12 11 25* 4
3- 4 | 32* 34 6 17* 15* 19* 91* 15 11 3 18
4- 5 | 7 5 1 4* 0 5 9 ? 7 6 6
5- 6 | 6 3 3 16* 1 3 ? 4 2 ? -
6- 7 | 7 12* 3 3 1 0 8 7 2 14* 2
7- 8 | 13 8* 5* 3 4* 0 7 6 2 6 5
8- 9 | 3 3 6* 3 2 1 3 2 9 18* 3
9-10 | 3 5 3 8* 2 0 1 5 5 5 21*
10-11 | 8 2 3 1 2 1 6 2 2 11* 5
B11-12 | ? ? 12 ? 14? 1 12* 8 6 6 3
12-13 | 8 4 4* 2 1 4 12 9 2 8 10
13-14 | 2 6* 0 1 2 2 10 4 4 5 5
14-15 | ? 8 1 16* 1 5 8 4 4 ? ?
15-16 | 1 2 2 2 4* 4 3 1 4 8 10
16-17 | 2 ? ? 8 2 2 13* 6 1 10 ?
17-18 | 3 3 2 5* 0 4* 11 8 4 9 4
18-19 | 8 1 8* 5 4* 3 4 9 5 5 5
19-20 | 3 1 2 3 2 2 10* 4 9 5 4
20-21 | 5* 1 1 4 1 1 4 4 7 ? 6
21-22 | 3 3 1 2 3 3 6 4 12* 5 3
22-23 |
23-24 | 6* 1 4 12* 8* 4 4 3 ? ? ?
24-25 | 13* 12* ? ? 1 3 5 3 6 14 5
25-26 | 3* 1 1 3 4 3 3 6 3 14* 6
26-27 | 15* 10* 2 2 3 2 4 7 2 3 9
27-28 | 4* 1 3 ? 7* 1 11 2 8 10* 4
28-29 | 3 0 0 1 3 0 1 1 6 4 9*
29-30 | 4* 4* 0 3 2* 1 0 10 6 4 9
30-31 | 3 4 10* 2* 0 4* 3 5 8 7 7*
31-01 | 13* 8* 1 16* 2 1 5 6 2 14* ?
------+-------------------------------------------------------
2000 | 21h 22 23 00 01 02 03 04 05 06 07
Jan | UT
Notes:
. ? probably affected by sporadic-E, tropo, direct reception.
. * warning for relative high number of long duration reflections,
an indication for potential stream activity.
. local time = UT + 1 hour
Maurice De Meyere
----------------------------------------------------------------------
Location: Astronomical Observatory, University of Ghent, Belgium
(ED50 coordinates: 3 42' 32" E, 51 01' 25" N)
Antenna (2x): 4 elements horizontal Yagi, pointed East, elevation= 20 deg
Antenna amplifier: 10 dB gain
narrow band resonance lambda/4 antenna filter
Frequency: (1)=66.29 MHz (signal) and (2)=65.3 MHz (interference control)
BReceiver (2x): modified commercial FM receiver
Data acquisition: 12 bits PC-based A/D convertor, 250 Hz sampling rate
BInterference 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
B 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.
-------------------------------------------------------------
| Jan 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 | 35 23 32 25 14 11 4 9 6 4 3 5 4 6 2
1 | 28 39 39 41 15 9 16 30 13 16 12 27 10 7 5
2 | 33 43 44 54 18 15 27 28 10 11 15 20 13 10 26
3 | 35 47 69 95 26 19 30 16 25 26 52 13 40 7 13
4 | 67 50 77 133 73 35 25 24 34 34 23 19 53 20 21
5 | 53 58 77 114 36 25 23 47 24 14 28 17 35 34 20
6 | 56 37 52 60 37 13 47 29 18 37 25 15 30 29 20
7 | 54 73 74 153 40 27 43 36 19 50 43 23 27 32 44
8 | 54 111 83 255 17 24 35 22 29 17 21 6 50 20 33
9 | 63 65 49 416 16 32 56 26 24 29 14 4 30 13 36
10 | 51 55 54 429 13 19 24 64 31 22 24 11 20 10 28
11 | 48 49 68 243 29 45 25 23 27 20 15 13 20 21 18
12 | 44 34 53 197 35 24 21 19 90 21 8 10 12 15 13
13 | 49 31 60 134 16 17 26 26 11 10 4 7 10 8 13
14 | 32 41 43 72 22 13 10 10 30 4 4 1 5 9 11
15 | 26 21 35 43 12 13 12 9 15 3 1 7 9 3 15
16 | 15 11 28 28 5 9 8 12 11 3 4 5 7 8 8
17 | 12 21 43 21 16 13 11 17 11 9 2 5 13 8 4
18 | 14 17 28 31 9 10 7 9 16 12 3 7 11 8 6
19 | 14 22 47 23 9 7 8 9 22 6 9 6 11 6 3
20 | 12 29 55 30 10 16 9 15 13 12 8 5 13 6 6
21 | 20 28 106 22 13 13 14 10 14 15 11 17 9 8 11
22 | 31 43 129 17 18 14 14 15 27 8 7 35 11 11 5
23 | 18 24 25 4 6 2 6 6 11 7 5 8 2 2 3
---+------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
--------------------------------------------------------------
| Jan 2000 | 10x % reflec. time | horiz: day | vert: time UT |
--------------------------------------------------------------------
B | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---+----------------------------------------------------------------
0 | 4 3 1 3 5 8 1 9 3 1 15 4 2 3 8 3
1 | 16 12 9 3 20 9 4 8 22 15 4 4 10 9 6 6
2 | 14 8 9 7 7 7 18 9 7 7 5 9 8 5 4 10
3 | 19 9 15 12 15 12 25 9 13 8 9 11 18 10 10 15
B 4 | 27 18 38 12 23 23 23 24 16 13 14 14 38 12 30 25
5 | 23 11 25 10 24 12 22 37 11 4 21 16 30 12 14 16
6 | 16 15 15 25 34 50 13 11 33 15 16 20 14 19 23
7 | 35 26 22 25 33 37 20 27 15 40 26 26 32 16 40 30
8 | 28 20 30 27 23 9 25 19 10 10 29 13 18 23 25 59
9 | 32 7 13 13 9 25 15 21 10 2 11 9 11 25 44 96
B10 | 31 18 13 10 8 8 16 45 6 6 15 8 13 38 32 17
11 | 13 15 16 12 11 30 13 36 20 31 28 15 8 29 18 12
12 | 21 5 10 4 22 16 20 15 17 17 21 26 10 10 14 11
13 | 37 5 6 22 7 7 20 13 7 7 15 3 8 11 8 15
14 | 18 11 4 3 7 5 19 11 5 5 5 6 5 12 7 12
15 | 7 5 8 4 6 1 8 3 3 2 4 6 18 12 9 5
B16 | 5 18 2 2 3 2 6 9 5 12 3 3 3 3 40 4
17 | 4 7 2 4 4 4 5 6 6 6 4 3 3 5 5 3
18 | 4 5 4 3 5 14 5 6 3 5 3 7 8 3 7 5
19 | 10 5 6 6 4 3 2 4 11 9 4 5 3 11 6 12
20 | 8 6 13 7 6 10 11 11 3 4 3 4 4 16 11 6
21 | 6 8 9 10 8 4 11 10 2 9 11 5 4 13 7 11
B22 | 25 8 6 10 11 4 3 6 6 4 9 10 4 8 9 8
23 | 2 1 11 1 6 1 1 3 0 1 3 3 2 1 3 3
---+----------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Notes:
. good Quadrantids activity on Jan 4
. one or more transmitters have ceased broadcasting since early 2000.
The counts are considerably lower, and therefore interference has
a bigger impact.
Pierre De Groote
---------------------------------------------------------------------------
Observer: R.B. Minton
Location: Raton, NM (104 26' W, 36 54' N, 2000 m above sea level)
Frequency: 92.9 MHz
Transmitters: KTZA FM 100 kW, Artesia NM, dist 444 km, geogr azim 178 deg
KSPZ FM 53 kW, Color. Springs, dist 217 km, geogr azim 352 deg
KYBR FM ? kW, Espanola NM, dist 180 km, geogr azim 236 deg
???? FM ? kW, Juarez Mexico, dist 579 km, geogr azim 198 deg
KWFM FM 90 kW, Tucson AZ, dist 798 km, geogr azim 233 deg
Antenna: folded dipole, on 6.3 m high mast, oriented N-S
Receiver: Subaru 12 V DC car radio with digital tuning
Observing method: conditioned audio input in the game port of an IBM 386 SX-50
PC, 128 samples/second, DOS/Basic software, automatic
Total hourly counts
December 1999
Dec| UT
1999| 0h 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
----+------------------------------------------------------------------------
1 | 2 4 9 4 13 7 8 5 4 5 6 4 2 5 4 3 8 9 5 5 4 4 5 10
2 | 2 5 4 6 6 4 4 1 10 2 5 3 5 8 2 7 10 7 4 2 2 6 11 13
3 | 6 6 5 5 8 6 6 6 7 1 7 6 5 2 5 1 9 5 7 3 7 4 6 10
4 | 4 38? 5 2 6 5 3 1 6 5 1 3 4 5 3 5 11 11 6 4 6 9 4 7
5 | 4 4 3 3 1 2 1 4 2 5 3 9 2 3 6 6 2 15 5 2 3 0 1 5
6 | 5 3 5 2 2 1 2 5 1 2 2 5 3 2 4 3 3 4 7 2 2 3 4 12
7 | 6 4 3 3 7 7 0 7 5 6 7 4 6 7 4 6 8 5 2 4 2 2 5 6
8 | 3 6 4 4 6 3 3 3 1 2 6 5 3 3 3 6 13 11 14 2 2 9 5 8
9 | 6 4 2 2 13 2 1 1 3 5 3 4 3 2 6 6 11 8 11 10 8 5 4 14
10 | 10 2 6 3 4 7 3 4 5 3 1 5 2 3 6 1 7 16 14 9 3 6 4 9
11 | 4 7 4 5 16 12 4 4 1 4 3 3 4 9 4 6 10 7 6 13 4 4 3 8
12 | 7 4 5 5 3 5 3 0 0 3 1 3 4 5 5 9 3 4 7 6 4 4 5 4
13 | 1 5 8 7 14 13 19 4 3 2 1 4 5 10 10 16 11 7 1 3 1 2 2 2
14 | 3 6 12 13 9 14 16 3 4 3 3 7 5 5 11 21 14 7 8 3 11 3 4 5
15 | 11 5 11 9 14 13 9 5 2 3 3 4 4 4 6 8 17 10 10 6 6 6 4 4
16 | 1 6 5 3 7 7 6 3 3 4 3 6 4 3 4 6 10 10 8 3 7 6 2 5
17 | 2 3 4 6 4 4 5 4 4 3 5 5 0 2 7 2 9 4 11 8 7 2 8 8
18 | 6 9 7 11 6 4 14 3 5 4 4 5 3 4 3 8 21 6 2 5 8 2 6 9
19 | 6 6 1 0 8 4 3 7 4 6 2 2 5 2 2 1 7 4 7 7 8 3 3 6
20 | 5 5 8 2 2 2 1 9 1 3 2 2 3 4 8 3 14 10 13 9 4 9 11 13
21 | 14 7 8 5 8 12 8 5 5 1 1 5 4 2 3 2 18 1 0 1 2 6 4 8
22 | 10 6 11 2 5 8 4 4 7 7 3 4 3 7 3 4 17 4 8 0 2 3 6 8
23 | 10 1 3 1 6 2 2 1 2 2 1 5 0 0 5 6 8 8 11 10 3 2 7 9
B 24 | 6 7 4 5 7 6 1 3 3 5 1 2 0 4 4 10 8 21 7 2 0 2 1 12
25 | 7 3 2 2 4 4 5 5 6 0 5 3 2 2 0 7 17 15 4 1 2 6 4 4
26 | 1 1 4 4 2 2 6 2 8 3 0 1 2 1 8 8 16 9 25 9 3 10 4 6
27 | 6 6 6 12 3 5 8 3 5 5 5 6 5 2 5 4 6 5 9 9 7 1 6 8
28 | 2 2 5 1 8 6 3 1 1 5 4 2 6 6 5 5 13 11 11 3 4 1 4 10
29 | 4 2 4 1 2 0 2 1 0 0 0 0 0 0 1 1 2 1 1 0 3 8 5 11
30 | 6 0 2 8 11 2 0 6 2 4 5 4 7 4 8 8 7 2 12 3 4 0 2 4
31 | 0 0 1 0 1 1 0 3 2 4 6 0 3 2 2 4 9 1 14 11 4 4 5 4
----+------------------------------------------------------------------------
1999| 0h 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Dec| UT
Signal duration distribution for the above period
Duration (s) Number
< 0.1 1400
0.1 to 0.3 1058
0.3 to 1 752
1 to 3 485
3 to 10 170
10 to 30 3
> 30 0
R.B. Minton
---------------------------------------------------------------------------
Observer: Sadao Okamoto
Location: Damine Meteor Observatory, Japan (137.53 E, 35.07 N)
Transmitter: HAM beacon (JA9YDB) for RMO (50 W CW, 53.7500 MHz) by
JA9BOH Kimio Maegawa. No modulation except for identification.
Antenna: 2 element Cross Yagi 4 dBi aiming to Zenith. Omni-directional
in azimuth and elevation above 15 deg elevation.
Location: Fukui-NCT at Sabae city (136.2 E, 35.9 N)
At present time about 10 observers are listing for
Kimio Maegawa's 53.75 MHz beacon.
Receiver: IC575
Antenna: 2 element Yagi, pointed to the zenith.
Observing method: FFTDSP software, manual count.
Hourly echoes over 10 dB SNR
2000
Jan| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Jan| 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
--+--------------------------------------------------------------------------
1| 39 48 63 51 61 63 53@65@28 n n n n n n n n n n 9 19 37 -- --
2| -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --@41
3| -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- n n n n 9 19 31 37@51
4| 48 52 81 81104 93122114 87 67 48 n n n n n n n 10 9 15 34 42 --
5| 53 69 72 76 84 90 97 70 44 26 32 34 23 18 16 n 11 14 5 13 12 30 34@38
6| 27 50 45 59 62 59 64 47 30 42@43 40 20 26 16 13 e 9 10 7 19 30 33@39
7| 42 36 61 61 57 57 56 55@48@40 38 41 24 n n n 10 n @8 13 8 23 16@25
8| 26 39 57 69 50 50 63 42 35 42@24 23 17 20 10 @9 n n n 23 12 24 39 --
9| 26 49 36 58 62 66 57 60 46 37 23 17 20 13 14 8 5 16 11 12 21 30 42@35
10| 35 48 61 56 52 57 67 52 46 32 33 22 14 21 9 10 5 n n @9 15 10 18@25
11| 28 38 45 55 51 51 34 43 n@22 20@25 n n n n n n 5 10 27 33 21@36
12| 32 41 58 52 59 59 60 45 46 38 42 n 25 16 18 10 10 5 11 8 21 33 32@31
13| 36 43 53 51 59 58 56 39 36 43 40 31 26 29 13 5 14 5 7 10 21 33 32@37
14| 44 41 35 42 72 66 45 28 42 n n 12 n n n n 9 10 7 11 13 26 39@29
15| 32 43 58 47 58 65 47 44 41@26 n n n n n n n 8 5 5 24 24 27 31
16| 30 37 46 69 59 50 49 33@30 47 44 39 27 19 12 9 8 14 12 12 18 23 35 41
17| 44 45 52 62 56 57 49 45@36 47 34 37 24 n 12 6 13 14 9 10 16 21 30 37
18| 39 43 47 50 53 60 44 44@42 n@35 n n n n n n 6 13 17 14 31 39 47
19| 44 47 51 56 53 67 53 50@37 33 42 n n n n n n n 9 16 21 31 31 33
20| 34 42 56 61 73 45 61 39 n n n n n n n n n n 6 10 13 16 29 37
21| 34 28 41 48 58 58 62@33@24 n n n n n n n n 6 11 9 8 34 36 37
22| 42 56 59 50 58 15 53 58 n 26@20 n n n n n n 4 8 5 14 37 31 50
23| 47 46 51 56 45 52 42 48@37@49 42 25 21 16 11 9 5 8 6 10 12 31 36 40
24| 40 50 59 50 48 35 47 39@25 31 19 10 17 20 18 9 6 3 6 4 11 28 42 36
25| 37 24 50 43 41 31 32 33@38 27 32 17@12 n n n n 3 n n 9 11 15 19
26| 25 38 44 59 48 61 39 21 n n n n n n n n n n 3 8 16 25 19 15
27| 37 15 35 38 44 53 49 24@32@18 18 n n n n n n n n 12 21 26 49 38
28| 33 48 49 43 55 28 37 22@25@15 n n n n n n n 2 4 3 15 29 46 47
29| 47 45 45 40 53 41 34 35@32 12 36 28 10 n n n e e 13 8 18 28 31 45
30| 36 47 41 68 38 46 42 40 -- 33 22 22 18 23 11 10 10 1 8 10 19 33 35 39
31| 43 30 30 42 42 49 39 23@14 24 15 12 24 n n n n n @2 10 @6 14 17 20
---+--------------------------------------------------------------------------
Jan| 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Jan| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
2000
Echoes with duration > 5 s
2000
Jan| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Jan| 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
--+--------------------------------------------------------------------------
01| 3 4 2 3 3 3 2 2 1 1 -- --
02| -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
03| -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1 1
04| 1 3 9 9 18 24 21 33 25 24 13 1 1
05| 4 13 2 6 6 17 10 11 3 2 4 1 1 2 1 2
06| 1 3 4 3 6 6 2 5 3 1 2 1 2 1
07| 2 3 2 4 2 10 4 3 3 6 1 1 1 1 3
08| 2 1 6 9 4 5 3 4 10 6 3 1 2 1 1 1
09| 2 5 2 3 5 3 6 5 4 1 1 1 1
10| 7 3 10 4 4 4 3 7 1 2 2 1
11| 2 3 4 6 5 4 4 3 1 3 2
12| 1 3 4 2 2 5 4 1 2 7 3 2 2
13| 1 4 3 2 2 1 2 3 2 2 1 1 1
14| 1 2 1 1 2 4 2 2 3
15| 1 3 2 2 1 3 3 1 1 1 1 1
16| 2 5 2 3 3 4 5 3 3 3 1 1 1 1 1 2 3
17| 2 4 4 1 1 2 2 1 1 1 1 1 1 2 1 1
18| 1 3 2 6 2 2 2 1
19| 2 3 2 5 1 5 4 3 4 4 4 1 1
20| 2 3 1 5 2 1 3 1
21| 1 5 2 4 4 1
22| 3 1 5 4 6 2 4 1 2 5
23| 3 7 1 4 1 1 4 2 2 4 1 1 1 1 3
24| 4 1 4 3 4 1 1 1 1 1
25| 1 3 2 2 1 3 2 2 6 1
26| 2 1 1 2 4 5 1 1
27| 1 3 3 2 2 4 2 3 1 2 2
28| 2 2 3 4 3 1 1 1 2 2 1
29| 1 1 3 1 3 1 3 1 2 1 1
30| 1 8 1 2 5 2 1 1 1
31| 3 5 1 5 2 1 4 2 1 1
--+--------------------------------------------------------------------------
Jan| 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Jan| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
2000
Daily rate of long echoes (duration > 20 s)
2000
Jan 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
-------------------------------------------------------------------
Count 3 -- -- 13 5 2 4 5 1 5 2 3 0 1 1 3
Jan 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---------------------------------------------------------------
Count 0 0 1 1 0 3 1 0 1 0 3 0 0 3 1
Notes:
. the peak of Quadrantids activity was observed on Jan 3, 21h UT.
-: lost counts because of high noise level or machine failure.
@: hourly rate estimated by effective observation time less than 60 min.
n: contamination due to radio noise or interference.
e: contamination due to sporadic E opening.
f: no data available due to TX or RX failure.
LT = local time = JST = UT + 9 hours
Sadao Okamoto
---------------------------------------------------------------------------
Observer: Garfield Tsao (BM2EQB)
Location: LonTan Observatory
LonTan, TauYan, Taiwan R.O.C. (121 14'37" E, 24 52'54" N by GPS)
Frequency: 50.0169 MHz USB mode 3 kHz width.
Antenna: Comet made 50MHz Yagi HB 4 element (gain 10.3 dBi)
astronomical azimuth 225 deg (=NE), elevation 7 deg.
Transmitter: MIYAZAKI University Japan, USB mode, 50 W (24 hours),
distance about 1125 km from Lon Tan.
Receiver: Icon PCR-1000 computer controlled all band receiver
Sensitivity: 0.25 uV for 10 dB S/Ne D/A conveand 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.
December 1999
1999|00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Dec|16h17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
----+-------------------------------------------------------------------------
11 | * * * * * * * * * * * * * 8 5 6 6 7 7 6 13 8 16 8
12 |12 9 8 6 6 10 7 5 11 9 6 7 6 * * * * * * * * * * *
------------------------------------------------------------------------------
18 | * * * * * * * * * * * * * * * * * 46 30 35 32 35 32 36
19 |36 63 69 80 89 92 86 71 73 54 62 55 32 Es * * * * * * * * * *
25 | * * * * * * * * * * * * * * * 38 17 19 18 20 19 16 19 29
26 |27 23 29 37 26 28 42 37 36 41 30 38 24 23 18 * * * * * * * * *
B
Notes:
. "Es" mark= E layer propagation and E layer sporadic of reflection.
. many strong (> 20 dB) and long (> 60 s) meteor-like echoes on Dec 18-19.
Garfield Tsao
---------------------------------------------------------------------------
Observer: Ilkka Yrjola
Location: Finland (26 35' E, 60 54' N)
Frequency: 88.8o50.zip (754 K).
Quadrantids 2000
Meteor counts in one hour intervals starting at:
UT | 2 Jan 3 Jan 4 Jan 5 Jan
----+----------------------------------
0h | 21 76 569 146
1 | 88 63 413 159
2 | 36 0 292 161
3 | 102 129 400 150
4 | 59 132 374 167
5 | 255 65 26 133
6 | 55 170 155 137
7 | 85 132 350 191
8 | 24 47 345 174
9 | 86 148 920 149
10 | 76 143 2378 235
11 | 161 213 2220 173
12 | 63 178 1792 112
13 | 128 210 1265 181
14 | 137 238 876 31
15 | 126 210 564 121
16 | 88 198 334 104
17 | 47 115 231 128
18 | 73 57 24 47
19 | 89 170 24 99
20 | 143 144 119 23
21 | 102 312 122 49
22 | 107 340 161 40
23 | 89 86 126 29
----+----------------------------------
UT | 2 Jan 3 Jan 4 Jan 5 Jan
Note
. The time of the peak of the Quadrantids was interesting this year.
The normal +6 h shift from previous years to 2000 is not quite correct this
year?
Ilkka Yrjola
2. ABOUT THE RMOB
The RMOB is an independent initiative of some workers in the field of radio
Bmeteor 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.
BThose 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 6: 1*, E Barcelona
E-mail: Ea3btz@retemail.es
http://personal3.iddeo.es/ea3btz (in Spanish)
Michael Boschat
6306 Cork St., Apt.512, Halifax, Nova Scotia, Canada
E-mail: andromed@atm.daldot ca
Maurice De Meyere (ON4NU)
Hullekensstraat 24, B-9831 Deurle, Belgium
tel: +32 (9) 282 35 26
E-mail: mauricedot demeyere@planetinternetdot be
University of Ghent, Astronomical Observatory
Krijgslaan 281(S9), B-9000 Gent, Belgium
E-mail contact: Paul@izar.rug.acdot be, Pierredot deGroote@rug.acdot be
Werfried Kuneth
Ferndorf, Austria
E-mail: ku@aon.at
http://www.qsldot net/oe8fnk
Alastair McBeath
IMO: International Meteor Organization
12A Prior's Walk, Morpeth, Northumberland, NE61 2RF, England, U.K.
E-mail: vice_president@imodot net
R.B. Minton
Astrometric Observatory
568 North First Street, Raton, NM 87740, USA
tel: +001 (505) 445 7009
Chris Steyaert, VVS
Kruisven 66, B-2400 Mol, Belgium
tel: +32 (14) 31 51 04
E-mail: steyaert@vvsdot be
Compuserve: 72650,3513
Sadao Okamoto
E-mail: okamoto@jim.sugiyama-u.ac.jp
B
Garfield Tsao (BM2EQB)
LonTan Observatory, LonTan, TauYan, Taiwan
E-mail: tsao5916@ms17.hinetdot net
http://www.geocities.com/Eureka/Office/1528 (in Chinese)
Jeroen Van Wassenhove, VVS
's Gravenstraat 66, B-9810 Nazareth, Belgium
tel: +32 (9) 385 61 09
E-mail: 100101.734@compuserve.com
Ilkka Yrjola
Jukolantie 16, FIN-45740 Kuusankoski, Finland
E-mail home: oh5iy@sci.fi
http://www.sci.fi/~oh5iy/
Call: OH5IY, packet radio: OH5IY@OH5RBG.#KVL.FIN.EU
--
Christian Steyaert (RMOB0001) 8 February 2000
--
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