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(meteorobs) Radio Meteor Obs. Bull. April 2001
Radio Meteor Observation Bulletin No. 93 April 2001
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.
| Apr 2001
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 10 16 41 12 18 24 10 17 21 9 12 9
1 | 14 17 23 24 22 29 13 10 19 12 16 8
2 | 26 18 27 11 28 31 23 14 12 19 14 7
3 | 23 41 38 22 36 32 23 16 24 18 20 13
4 | 47 47 43 30 27 39 39 38 28 17 28 23
5 | 32 57 42 24 64 42 31 42 43 17 29 42
6 | 32 25 38 33 58 52 39 44 50 32 26 23
7 | 35 34 24 26 45 40 40 39 36 37 32 32
8 | 21 23 25 32 49 37 30 39 42 37 31 21
9 | 34 12 31 38 49 36 24 35 38 36 36 16
10 | 24 26 45 26 66 36 34 36 4 36 29 22
11 | 18 26 31 26 52 22 28 21 19 25 35 17
12 | 22 29 39 32 37 26 36 35 26 40 47 26
13 | 26 33 41 40 40 47 26 24 34 69 42 24
14 | 39 26 32 44 54 32 26 29 32 57 33 12
15 | 33 30 19 24 41 22 18 29 16 29 35 29
16 | 19 27 5 22 31 25 21 20 23 16 22 11
17 | 5 20 16 6 12 18 11 15 21 11 19 15 10
18 | 29 13 18 9 14 21 17 14 16 8 13 18 11
19 | 23 10 18 8 17 26 13 13 22 13 10 10 10
20 | 8 13 19 14 17 22 14 19 22 11 20 16 7
21 | 11 21 24 10 27 18 15 24 32 23 18 20 11
22 | 16 11 14 20 21 24 13 29 17 13 14 23 10
23 | 22 17 29 13 22 17 23 27 12 10 12 16 15
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| Apr 2001
| Apr 2001
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 10 10 8 21 10 9 15 31 9 19 5 28
1 | 14 10 6 15 18 10 14 21 6 10 10 13
2 | 13 7 14 19 20 23 11 18 16 20 9 24
3 | 19 16 18 13 22 26 15 20 27 25 15 41
4 | 30 11 20 21 21 30 46 28 18 29 37 60
5 | 49 25 17 18 54 57 50 40 32 26 18 44
6 | 42 35 41 31 27 76 49 64 15 50 22 33
7 | 47 21 21 19 40 56 74 59 22 38 40 40
8 | 40 31 19 27 27 32 59 40 42 45 16 28
9 | 38 32 23 23 25 38 39 29 20 34 13 21 20
10 | 35 28 17 15 35 21 29 15 9 18 5 16
11 | 20 24 14 20 23 30 30 23 26 18 20 30
12 | 32 25 14 25 41 29 23 30 31 31 17 30
13 | 44 42 14 43 25 44 40 33 29 29 26 71
14 | 38 31 15 23 31 30 43 30 25 33 32 37
15 | 25 15 19 18 32 10 29 24 23 13 16 27
16 | 47 13 10 19 24 21 13 9 16 16 20 9
17 | 26 5 14 17 9 8 12 16 7 14 12 5
18 | 67 13 10 16 10 9 15 10 0 9 12 12
19 | 18 9 9 13 14 8 23 20 6 6 12 6
20 | 5 25 8 11 25 21 20 12 14 15 13 7
21 | 2 24 11 13 27 26 16 15 17 15 35 9
22 | 11 14 19 19 40 15 32 16 13 12 32 10
23 | 11 18 14 17 29 13 21 19 7 9 16 8
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| Apr 2001
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 2001
Number of meteors heard in one hour interval
| UT
Apr | 09h 10 11 12 13 14 15 16
----+--------------------------------
1 | - - 18 19 31 37 40 18*
7 | - 21 22 27 26 - - -
8 | - 17 - 36 46 33 20 12
15 | - - 10 15 21 18 9 -
22 | - 17 14 24 33 34 34 21
27 | - 38 28 34 35 32 41 20
28 | 17* 13* * * - - - -
----+--------------------------------
| 09 10 11 12 13 14 15 16
Notes:
. no corrections for radiant position made to the counts
. - = no observations made
. * = Interference
Mike Boschat
---------------------------------------------------------------------------
Observer: Gabor Bucsi
Location: Bekes, Hungary (46 46' N, 21 08' E)
Frequency: 91.8 MHz
Antenna : 5 element Yagi, azimuth SW
Receiver: Videoton RA-6363S
Observing method: Electronic interface on LINE output audio signal are fed
in COM port of a PC. METEOR v 4.0 version processes the signal
and records on hard disk the time of the events.
Number of meteors in one hour intervals
| April 2001
UT | 18 19 20 21 22 23 24
---+----------------------------
0h| 2 1 7 11 4 5
1 | 3 3 5 3 3 2
2 | 3 1 5 4 5 1
3 | 6 3 4 2 9 1
4 | 2 1 4 3 7 2
5 | 4 3 9 5 6 0
6 | 5 7 3 7 5
7 | 3 3 5 6 6
8 | 2 2 4 5 7
9 | 2 7 4 7 0
10 | 6 4 5 2 6
11 | 3 5 0 5 4
12 | 3 2 1 2 6
13 | 1 4 2 0 4
14 | 1 3 2 1 4
15 | 4 3 1 0 1
16 | 0 1 2 3
17 | 1 2 2
18 | 1 1 2 1
19 | 5 3 2 1
20 | 5 6 3 2 7
21 | 3 6 4 3 2
22 | 3 4 7 3 3 3
23 | 3 1 7 2 3 5
---+----------------------------
UT | 18 19 20 21 22 23 24
| April 2001
Gabor Bucsi
---------------------------------------------------------------------
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].
Raw counts of reflections with a duration of at least 0.027 s
during one hour interval starting at UT:
Apr |
2001| 0h 1 2 3 4 5 6 7 20 21 22 23
-----+--------------------------------------------------------------
7 | 6 2 3
8 | 6 10 38 65 49 12 22 10 15
9 | 14 11 44 42 29 21 3 18 9 12
10 | 4 1 7 9 31 35 4 16 11 9
11 | 9 11 36 41 52 58 52 17 44 6 5
12 | 5 8 25 42 48 54 42 17 21 6 2
13 | 4 5 41 42 56 71 7 14 8 9
14 | 9 9 24 35 37 16 7 25 7 6
15 | 4 2 18 29 53 52 33 14 26 10 7
16 | 6 10 21 36 49 50 8/ 17 14 6 5
17 | 8 6 39 40 62 35 15 25 2 1
18 | 2 6 33 52 38 58 24 23 7 7
19 | 5 6 31 36 52 57 24 12 4 2
20 | 4 17 78 50 44 47 27 26 10 2
21 | 5 9 38 47 52 45 40 36 34 4 9
22 | 1 1 1 13 8 42 33 28 38 9 2
23 | 1 16 39 55 14 25 15 6 6
24 | 4 18 29 41 25 20 14
25 | 2 15 21 2
26 | 2 12 58 52 65 55 6 31
27 | 36 51 50 50 7 23
28 | 3 15 53 55 68 49 3 27 16 1
29 | 2 3 20
-----+--------------------------------------------------------------
2001| 0h 1 2 3 4 5 6 7 20 21 22 23
Apr |
Raw counts of reflections with a duration of at least 1.000 s
during one hour interval starting at UT:
Apr |
2001| 0h 1 2 3 4 5 6 7 20 21 22 23
-----+--------------------------------------------------------------
7 | 1
8 | 2 2 7 7 7 1 6 2 6
9 | 2 0 1 3 2 7 1 5 0 8
10 | 0 1 1 1 3 6 0 0 2 0
11 | 0 3 7 3 8 6 4 2 15 0 2
12 | 0 0 2 3 7 6 3 5 2 0 1
13 | 0 1 4 8 11 16 12 1 3 3 2
14 | 0 3 2 3 2 13 1 3 6 2 1
15 | 0 0 1 1 7 4 5 2 6 1 2
16 | 0 3 3 6 8 6 5 2 1 0
17 | 1 0 6 2 7 2 13 3 4 1 1
18 | 0 0 3 5 2 12 6 5 2 1 1
19 | 2 0 3 2 10 11 8 6 4 2 0
20 | 1 4 4 6 7 2 7 9 0 1
21 | 0 2 5 7 7 11 3 7 6 0 2
22 | 0 0 0 2 2 3 7 2 6 1 0
23 | 1 7 10 4 3 5 3 1 1
24 | 0 1 7 5 0 7 5 3 0
25 | 0 1 0 1 0 0 2 9 0
26 | 1 2 8 9 12 10 1 0 7 1
27 | 0 1 4 10 9 8 2 4 0 1
28 | 0 4 5 8 5 1 4 2 0
29 | 0 0 6
-----+--------------------------------------------------------------
2001| 0h 1 2 3 4 5 6 7 20 21 22 23
Apr |
Notes:
. - = no observation
. blank = possibly affected by Es, interference
. / = half an hour only
. local time = UT + 2 hours
. periods with very low counts (beginning and the end of the month) for
still unknown reasons.
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 2001 | 10x % reflec. time | horiz: day | vert: time UT|
----------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+------------------------------------------------------------
0 | 5 4 10 5 5 8 5 26 6 7 15 7 6 5 4
1 | 8 5 9 11 8 3 7 6 11 13 11 10 5 4
2 | 9 9 38 32 19 23 23 16 9 14 26 10 16 5 8
3 | 19 20 35 30 23 33 35 23 15 20 22 11 27 19 18
4 | 18 9 26 12 16 17 35 26 35 24 23 15 42 9 28
5 | 41 23 58 23 43 38 19 18 12 18 21 33 21 34 24
6 | 29 48 76 29 19 25 26 21 14 17 22 17 41 22 37
7 | 32 24 21 29 28 37 51 38 13 40 30 15 40 22 33
8 | 42 12 23 49 20 35 72 55 21 30 39 30 32 33 36
9 | 29 13 23 23 15 30 43 23 48 23 21 26 31 33 26
10 | 25 25 23 25 18 26 20 28 30 21 34 15 28 23 27
11 | 24 10 34 39 22 20 23 25 16 12 32 21 28 11
12 | 22 20 11 16 14 17 9 33 28 12 24 10 23 26
13 | 13 20 17 11 13 8 14 15 15 17 10 16 16 10
14 | 11 9 10 5 10 12 8 12 18 19 9 6 7 8 9
15 | 5 5 5 13 2 12 5 4 3 4 6 5 16 6 24
16 | 4 5 4 8 2 5 6 5 10 4 3 2 9 2 1
17 | 5 6 4 5 3 7 5 2 4 3 2 4 3 3 4
18 | 8 3 2 4 6 4 9 2 1 5 2 9 3 2 14
19 | 4 4 9 4 4 9 8 3 7 13 4 9 3 5 3
20 | 9 10 7 11 6 11 16 11 6 9 5 11 5 4 4
21 | 5 17 7 7 9 6 7 6 14 6 8 10 5 9 9
22 | 5 4 3 3 4 4 6 4 5 3 4 3 5 4 3
23 | 5 3 1 3 5 7 26 4 5 6 4 16 2 4 11
---+------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
-------------------------------------------------------------
| Apr 2001 | 10x % reflec. time | horiz: day | vert: time UT|
----------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+------------------------------------------------------------
0 | 5 8 3 10 7 4 20 8 8 2 7 3 9 10 5
1 | 6 7 6 10 5 13 19 11 11 14 14 11 8 11 9
2 | 7 14 14 11 31 33 35 32 19 7 27 16 32 19 27
3 | 12 18 31 26 30 31 106 43 35 26 43 48 28 51 28
4 | 23 14 25 26 26 51 114 28 33 27 54 27 50 52 48
5 | 18 34 32 29 27 35 117 41 39 20 20 33 20 40 31
6 | 28 21 35 39 30 31 66 23 18 29 25 28 38 52 40
7 | 22 54 21 27 55 90 23 35 21 33 38 41 79
8 | 20 28 35 38 29 23 70 22 25 28 37 55 104 60
9 | 24 24 37 36 27 31 42 11 21 32 25 29 53 70 83
10 | 31 15 25 15 22 29 42 19 15 38 36 38 58 43 72
11 | 30 16 24 22 24 18 17 12 17 27 32 55 36 76
12 | 22 14 9 25 22 14 15 36 27 17 34 51 35 33
13 | 17 13 12 43 12 11 11 13 11 18 11 14 38 41 23
14 | 8 4 9 6 5 4 6 32 10 6 6 6 30 8 13
15 | 9 2 6 5 6 5 5 16 5 16 4 17 16 8 4
16 | 3 3 2 4 2 5 2 2 4 62 7 10 6 6 4
17 | 2 2 2 6 2 2 4 4 1 3 4 20 5 8 2
18 | 3 3 3 5 6 9 3 4 6 5 4 4 2 1 10
19 | 3 4 4 4 2 15 6 4 4 5 4 9 4 8 11
20 | 3 4 5 6 6 11 11 15 8 12 9 10 4 4 7
21 | 5 9 5 9 6 8 8 5 6 5 2 5 5 5 6
22 | 2 2 3 4 2 2 6 7 5 4 2 2 2 6 4
23 | 3 4 4 6 3 8 7 4 3 2 6 7 3 8 3
---+------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Notes:
. the usual Lyrids, and increasing "summer" activity towards the end of
the month.
Pierre De Groote
---------------------------------------------------------------------------
Observer: TianJing Ouyang(TIAOU)
Location: Wuhan, Hubei Province, P. R. of China (114 17'E, 30 30' N)
Listening Frequency: 95.9MHz.
Transmitter Location: Seoul, Korea
Antenna : 5 element Yagi, azimuth NE, elevation 10 deg
Receiver: Dishang R-3000, sensitivity 0.1 uV
Recording method: listening by ear
Listening period: 19h30m - 20h30m UT
Duration I : <= 0.5 s
II : 0.6-2.9 s
III : >= 3 s
April Duration Intensity Counts of Total
2001 III II I Strong Moderate Weak reflections duration time (s)
--------------------------------------------------------------------------
3 0 1 5 0 3 3 6 2.4
5 0 1 3 2 2 0 4 1.8
7 0 0 4 0 3 1 4 1.4
8 0 1 6 2 2 3 7 1.8
10 1 1 5 2 2 3 7 5.4
11 0 2 6 3 4 1 8 2.8
12 1 0 4 2 2 1 5 16.2 see
note L
16 0 0 6 1 3 2 6 1.6
18 0 4 2 0 2 4 6 4.0
27 0 1 3 2 1 1 4 2.0
28 0 1 8 0 1 8 9 2.4
29 0 0 2 0 1 1 2 0.4
30 0 0 0 0 0 0 0 0
Notes:
L: long lasting echo of 15 s at 20h25m52s
Local time = UT + 8 hours
TianJing Ouyang
---------------------------------------------------------------------------
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
Apr Over- Under-
2001 UT dense dense Total
_______________________________________________
1 08h00-09h00 6 4 10
2 09h00-10h00 14 11 25
3 09h00-10h00 4 2 6
4 09h00-10h00 6 7 13
5 09h00-10h00 3 4 7 Major Interference
6 08h45-09h45 Lost to Interference 3
7 08h45-09h45 " " " 2
8 10h00-11h00 4 12 16
9 10h00-11h00 7 7 14
10 10h30-11h30 2 12 14
11 09h00-10h00 1 4 5 Major Interference
12 09h00-10h00 14 9 23
13 09h00-10h00 Lost to Interference 0
14 07h00-08h00 2 2 Major Interference
15 09h30-10h30 14 20 34
16 09h30-10h30 12 17 29
17 09h30-10h30 8 15 23
18 09h30-10h30 8 9 17
19 10h00-11h00 5 13 18
20 08h00-09h00 21 31 52
21 08h00-09h00 18 24 42 Minor Interference
21h45-22h45 5 16 21 " "
22 04h00-05h00 4 7 11 No Interference
08h00-09h00 12 11 23 Interference
23 09h00-10h00 15 13 28
24 10h00-11h00 15 30 45
25 10h00-11h00 15 19 34
26 10h00-11h00 12 27 39
27 10h00-11h00 21 37 58
28 10h00-11h00 11 24 35
29 10h00-11h00 18 32 50
30 11h00-12h00 11 18 29
Will Kelsey
---------------------------------------------------------------------------
Observer: Stan Nelson, KB5VL
Location: Roswell, NM 88201 (33 25' 38" N, 104 30'55 W, elev 1100 m)
Receiver: Radio Shack Scanner Wide Band FM 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/
Antenna: 6 element FM beam geogr 45 deg az (NE) elevated 15 deg above horizon
| April 2001
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 10 6 5 2 7 10 8 0 10 2 4 5 8 4 4
1 | 3 2 7 7 9 7 7 1 4 9 7 10 9 4 11
2 | 9 5 10 12 16 5 16 2 8 20 1 14 4 6 9
3 | 11 15 12 9 13 13 15 3 12 16 12 9 11 15 11
4 | 11 9 15 10 6 20 13 4 18 12 13 8 8 16 13
5 | 11 17 16 12 12 10 19 5 14 13 10 13 19 10 16
6 | 13 12 10 17 39 16 14 6 25 10 16 17 14 22 13
7 | 12 21 11 25 13 28 7 16 18 17 9 18 12 23
8 | 18 18 24 25 15 19 8 15 18 16 18 20 57 19
9 | 10 11 24 26 33 18 9 21 26 14 14 18 22
10 | 10 17 22 22 18 27 10 24 19 24 21 23 22
11 | 25 31 23 20 23 11 23 21 16 22 21 24
12 | 20 31 24 20 30 12 23 32 24 20 25 26
13 | 23 24 33 25 37 30 13 22 23 21 24 27 30
14 | 77 24 36 28 23 31 14 29 25 25 29 36 24
15 | 89 29 32 21 26 31 15 21 25 27 24 23 35
16 | 20 28 30 22 25 41 16 29 38 32 21 24 45 24
17 | 23 27 25 29 20 21 17 30 17 32 18 18 32 26
18 | 17 23 33 23 38 20 17 18 23 19 26 28 17 30 17
19 | 12 32 21 25 15 7 21 19 15 21 23 10 18 20 14
20 | 9 13 22 21 26 18 17 20 12 23 17 7 27 64 8
21 | 16 17 11 6 26 14 13 21 10 6 13 11 26 56 15
22 | 7 12 10 13 9 8 16 22 3 8 36 7 10 14 8
23 | 2 12 4 8 5 10 9 23 11 12 11 5 5 17 13
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2001
| April 2001
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 5 4 13 19 8 5 8 3 4 6 7 9 6 ?
1 | 5 5 7 10 7 6 5 2 4 4 6 7 ? ? 40
2 | 11 7 12 8 5 6 2 14 8 8 11 18 ? ? 30
3 | 1 8 9 22 13 8 1 12 16 11 5 12 ? ? 12
4 | 16 15 11 15 11 10 0 13 18 9 16 14 ? ? 13
5 | 13 19 14 19 16 17 0 15 14 7 15 16 ? ? 11
6 | 21 20 18 18 12 18 0 13 24 10 9 14 ? ? 17
7 | 16 16 19 21 11 19 0 11 22 16 16 26 ? ? 29
8 | 17 30 20 22 11 25 0 15 25 20 15 27 ? ? 20
9 | 23 23 27 21 12 26 1 20 29 16 27 32 ? ? 26
10 | 21 21 21 31 23 26 0 16 ? 20 21 38 ? ? 25
11 | 17 26 26 22 22 27 0 16 ? 27 17 30 ? ? 45
12 | 25 25 30 22 25 28 0 31 3 29 26 46 ? ? 43
13 | 22 29 39 35 69 20 0 25 30 34 27 46 ? ? 55
14 | 30 32 32 29 117 43 6 33 ? 32 22 52 ? ? 48
15 | 27 31 37 28 38 44 33 26 ? 31 ? 18 ? ? 45
16 | 26 29 42 29 30 38 36 28 ? 25 24 31 ? ? 45
17 | 30 30 27 28 25 38 31 22 ? 28 12 21 ? ? 57
18 | 19 23 21 24 23 22 25 17 ? 17 14 24 ? ? 41
19 | 9 25 23 35 21 26 22 25 ? 31 12 25 ? ? 26
20 | 29 20 10 61 18 23 25 17 ? 15 10 40 ? 7 23
21 | 11 19 11 12 17 15 15 16 ? 15 12 2 ? 3 22
22 | 11 19 13 14 18 18 11 14 ? 10 6 4 ? 6 21
23 | 9 16 5 7 7 6 8 8 1 4 9 11 ? 6 20
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2001
Antenna: 6 element FM beam geogr 270 deg az (W) elevated 15 deg above horizon
| April 2001
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 8 6 12 10 6 8 8 8 9 7 7 10 8 12 6
1 | 10 6 7 11 15 10 12 10 13 9 12 9 13 13 10
2 | 14 6 8 6 5 14 7 11 11 6 9 10 9 4 11
3 | 6 8 8 9 11 6 7 9 9 11 9 6 12 7 9
4 | 13 7 4 6 10 13 9 12 8 10 10 11 9 5 1
5 | 9 6 6 4 6 9 11 13 6 8 7 14 12 8 10
6 | 10 8 5 9 27 10 12 8 12 8 5 11 11 21 19
7 | 13 9 11 6 13 4 5 6 9 9 7 16 18 8
8 | 10 13 6 12 10 9 11 12 5 9 13 9 36 12
9 | 7 9 10 8 7 12 8 10 7 10 13 8 11
10 | 7 9 6 7 7 10 14 7 6 10 16 11 11
11 | 30 3 9 7 30 11 17 8 10 12 10 10 30 9
12 | 33 9 7 8 33 16 24 7 11 11 10 14 20 12
13 | 14 3 13 49 9 11 16 10 19 29 5 33 21
14 | 39 16 17 21 39 4 13 8 9 8 11 16 25
15 | 7 20 24 8 17 15 10 8 6 9 11
16 | 14 14 12 15 11 24 13 9 9 7 11
17 | 18 11 9 12 18 15 9 11 8 14 12 8 11 8
18 | 9 9 6 8 7 9 6 10 4 3 7 7 9 8 11
19 | 6 16 11 28 7 6 12 7 8 18 16 6 6 6 9
20 | 11 7 14 8 8 11 4 10 14 10 6 5 11 36 6
21 | 5 4 10 12 9 5 9 5 6 8 8 14 11 9 8
22 | 7 18 11 10 6 7 12 6 8 9 10 10 7 12 4
23 | 7 10 9 6 10 7 5 7 10 6 3 8 12 8 11
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2001
| April 2001
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 12 7 14 4 8 10 7 9 10 6 9 10 ? 6 9
1 | 12 8 8 12 9 10 9 10 3 4 7 3 ? 6 10
2 | 8 10 10 8 5 15 9 7 9 8 18 9 ? 10 11
3 | 10 9 9 6 9 10 8 10 11 11 12 11 ? 10 4
4 | 9 9 7 5 3 9 5 6 11 9 14 11 ? 3 5
5 | 6 10 5 15 7 11 5 9 11 7 16 11 ? 6 12
6 | 10 12 10 10 12 14 3 10 13 10 14 13 ? 6 4
7 | 10 7 8 11 12 11 29 8 12 16 26 12 ? 8 11
8 | 7 8 9 7 10 12 72 10 18 20 27 18 ? 10 11
9 | 13 15 9 10 9 6 4 10 10 16 32 10 ? 6 12
10 | 7 9 13 25 6 7 13 10 10 20 38 10 ? 9 9
11 | 14 6 15 51 11 6 8 25 27 30 25 ? 5 5
12 | 7 6 25 42 12 7 9 20 29 46 20 ? ? 7
13 | 6 11 13 18 7 7 14 23 34 46 23 ? ? 5
14 | 7 10 10 35 17 9 12 32 52 ? ? 10
15 | 13 6 12 20 9 11 9 31 18 ? ? 13
16 | 9 10 8 44 9 15 13 8 20 25 31 20 ? ? 10
17 | 15 10 6 6 6 6 6 8 23 28 21 23 ? ? 6
18 | 8 8 21 5 7 13 6 7 17 17 24 17 ? 1 17
19 | 12 6 9 14 14 15 16 8 12 31 25 12 ? 7 6
20 | 6 12 10 7 11 14 5 12 9 15 40 9 7 9 5
21 | 7 9 9 4 10 14 10 10 16 15 2 16 3 13 8
22 | 7 13 6 9 10 5 8 8 7 10 4 7 6 16 10
23 | 9 11 11 11 9 4 11 13 2 4 11 2 6 14 5
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2001
Note:
. ? probably power failure
Stan Nelson
---------------------------------------------------------------------------
Observer: Hiroshi Ogawa
Location: Misato Observatory (Wakayama-pref. Japan) 135.40 E, 34.13 N
Frequency: 53.750 MHz.
Transmitter Location: Fukui-NCT at Sabae city (136.2 E, 35.9 N)
HAM beacon (JA9YDB) for RMO (50 W CW, 53.7500 MHz)
by JA9BOH Kimio Maegawa. No modulation except for identification
Antenna: original dipole (height: 1 m, to level, element: west-east)
Receiver: AOR AR8000 USB-Mode
Observing method: HROFFT software (by K. Okawa)
Counting method: manual count (using HROview software by M. Yamamoto)
Total number of echoes
Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
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|11 17 17 20 20 10 10 12 22 21 16 9 8 6 9 6 4 2 1 3 4 8@12 IF
2|Es Es 14 13 14 22 14 14 11 20 16 10 4 8 5 8 9 5 8 3 6 8 13 IF
3|IF@16@14@13 14 19 18 14 21 20 18 10 6 13 8 7 4 12 7 5 9 IF IF IF
4@14 14 15 18 23 25 17 12 16 15 13 13 10 4 @8 6 4 3 7 4 4 9 IF IF
5|IF@12 19 14 16 20 18 10 14 10 14 2 4 3 13 8 5 5 4 5 3 10 12@13
6|Es IF 14 10 17 20 21 19 20 12 18 11 9 6 10 3 5 4 6 5 5 10 12 14
7|IF@16 17 24 14 17 15 18 20 18 15 15 9 14 10 9 5 5 4 8 3 9 13 15
8|13 18 12 20 15 18 24 19 17 18 9 8 7 11 7 12 5 3 2 4 9 6 6 9
9|IF@14 13 15 11 14 15 20@11 12 15 17 IF IF 10 7 10 3 1 4 7 9 14 12
10| 9 13 19 15 17 28 24 21 16 9 7 8 15 9 @6 3 1 3 3 5 7 12 8 15
11|11 13 17 12 13 13 12 14 10 12@12 13 5 6 9 10 6 IF IF 5 10 4 8 8
12|12 10 16 14 18@14@16 16 14 14 8 11 17 6 11 7 5 4 5 8 6 9 12 14
13|16 16 18 25 27 12 22 18 14 IF@14 @6 @4@10 IF IF Es Es 6 IF IF IF IF IF
14|IF 12 13 17 13 24 16 14 20 18 12 13 5 7 10 IF Es @6 Es 7 4 9 10 17
15| 7 15 15 19 22 23 16 13 11 16 17 8 6 @6 @8 8 IF IF IF Es 9 9 10 14
16|IF IF@10 14 14 21 9 24 16 18 IF 4 8 9 8 4 2 IF IF IF IF IF IF Es
17|Es 13 16 11 12 17 23 11 13 20 11 11 9 9 13 9 IF IF IF IF@10 13 7 16
18|Es IF 13 13 23 18 18 18 15 17 11 8 12 10 9 7 5 3 4 5 2 2 11 10
19|18 13 13 12 23 18 16 20 19 19 11 8 6 9 16 12 @3 IF IF IF @5 9 11@14
20|IF 8 11 16 23 17 29 24 13 10 16 9 10 14 13 14 6 IF IF IF 6 3 11 12
21@11 12 23 19 16 20 23@15 19 21 14 13 10 15 IF IF IF IF IF IF IF IF IF IF
22|IF Es IF@24 28 23 24 23 36 20@22 9 8 11 5 11 8 IF @3 3 6 15 14 12
23|22 16 24 25 25 26 23 25 24 12 12 15 13 8 13 13 7 8 @6 @3 9 13 9 11
24|11 22 23 16 12 14 9 21 14 10 15 13 15 12@10 @6 Es @6 3 IF @6 9 9 10
25|11 16 16 18 8 24 15 15 14 14 12 10 9 11 10 12 10 8 6 4 6 8 13 11
26|15 16 16 18 24 27 20 27 24 27 13 12 18 13 15@12 @2 @4 IF IF 5 7 10 Es
27|Es IF 14 23 29 17 24 17 17 13 14 6 8 12 14 17 9 4 3 6 7 IF IF@12
28|IF@13@14 24 21 22 29 15 21 18 14 10 10 9 14 12 6 5 5 2 11 7 11 11
29|15 11 12 16 22 26 28 22 8 19 20 19 7 10 13 7 10 3 7 3 9 5 9 15
30|15 15 15 18 17 15 21 15 24 11 12 10 7@12@15 IF IF IF IF @4 @7 IF IF IF
---+--------------------------------------------------------------------------
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 23JST
Echoes longer than 20 seconds
Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
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|
2|
3| 1
4|
5| 1 1
6|
7| 1 1
8| 1 1
9|
10|
11| 1
12|
13| 1
14|
15| 1
16|
17| 1
18|
19| 1
20| 2 1
21| 1 1 1
22| 1 1 1
23| 1 1
24| 2
25| 1
26| 1
27| 1 1
28|
29| 1
30| 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 23JST
Notes:
--: lost counts because of high noise level or machine failure.
@: Hourly rate estimated by effective observation time less than 60 min.
IF: Contamination due to radio noise or interference
Es: Contamination due to sporadic E opening
LT = JST = UT + 9 h
Hiroshi Ogawa
---------------------------------------------------------------------------
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
2001
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 |18 32 32 28 29 32 34 12@13 4 6 @6 3 8 7 3 2 6 4 6 9 21 12 e
2 | e e 28 30 36 31 30@26 @6 12 @5 n n 5 7 4 15 3 4 7 7 17@16 n
3 @34 21 35 53 29 28 40 33@28 25 22 16 15 22 22 11 6 6 9 5 10 23 25 e
4 |13 14 18 32 32 23 32 14 n n 8 7 8 n @4 1 3 4 6 10 10 21 25 18
5 |19 31 38 37 41 29 36 25 @7 8 4 1 4 5 14 8 5 6 11 6 @5 23@37@33
6 | e@42 44 25 32 39 30 29@30 16 7 5 7 6 3 2 3 9 11 12 18 18 22 27
7 |24 38 33 43 40 42 40@27@20 19 5 n @7 12 16 17 e e e e 19 23 27 27
8 |32 24 39 45 36 47 58 47@28 30 16 5 11 15 21 7 e e 14@12 20 22 25 38
9 |34 23 31 30 31 40 44 39@46 26 15 8 6 10 6 4 6 12 22 13 21 18 24 45
10 |40 44 38 34 56 37 47 48@25 20 13 n n 6 7 4 10 6 9 8 11 32 20 35
11 |45 36 40 31 45 48 27 22@15 15 17 12 9 17 19 4 1 2 12 7 11 25 35 39
12 |33 43 51 41 45 40 47 54@36 37 32 31 30 27 23 21 4 6 11 9 8 12 27 33
13 |32 26 26 9 16 25 22 13@14 7 n@12 3 5 e n e e 11 3@10 15 21 16
14 |31 38 37 27 45 38 39 8@16 n n 6 6 n n 2 n e 7 8 15 21 38 46
15 |28 27 42 28 34 26@51@26 @8 @4 n 2 n 3 4 n n n 3 5 8 25 20 40
16 |29 28 30 32 30 23 31 14@10 n n 4 3 2 1 3 n n 5 17 18@18 e e
17 @40 36 24 41 39 35 46 42@37 @9 3 5 3 9 5 3 @5 e@12 10 16 19 26@48
18 | e@36 49 55 40 39 49 54@39 31 19 10 13 17 5 4 2 5 7 5 18 23 31 32
19 |36 34 40 48 40 48 42 43@33 26 9 5 7 6 n 1 1 @6 e e 3 7 10 16
20 |@7 4 4 10 13 20 30 18@26 7 11 4 7 9 6 7 8 n 3 9 16 20 38 43
21 |36 41 48 35 50 35 49 40@46 38 31 27 34 26 n e n n n n@18 n n n
22 | e 46 45 56 59 57 63 69 -- 18 10 n n n n 4 0 n n 9 11 10 22 43
23 |44 44 57 36 58 47 47 13@15 8 5 5 5 5 3 n n 3 6 13 18 17 27 33
24 |38 44 43 40 36 42 40 48@33 32 17 24 43 e e e e e e e @6 14 34 38
25 |47 47 37 40 43 39 40 30@22 27 28 25 31 31 20 9@10 2 1 7 7 12 10 41
26 |40 43 35 45 42 32 44 30@20 7 6 4 12 16 10 10 4 5 n n 19 14 25 e
27 | e@26 33 44 42 40 39 38@14 10 n 4 n n 8 5 3 3 7 9 7 17 17 24
28 |36 43 47 38 44 50 41 36@10 @8 2 3 5 6 10 8 7 9 9 5 6 15 19 29
29 |41 36 43 48 34 58 38 45@39 27 22 41 40 28 22 31 13 8 9 3 9 10 26 26
30 |32 39 39 53 38 47 52 51@36 39 38 28 26 20 8 n n n n@14 11 n n n
---+--------------------------------------------------------------------------
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
2001
Echoes with duration > 5 s
2001
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 | 1 1 2 2 1
2 | 1 1 2 4 3 1
3 | 1 2 2 1 1 3 1 2 1 1
4 | 1 1 1 4
5 | 1 1 1 3 1 3 1
6 | 2 1 3 5 2 1 1 1 1 1 3 1
7 | 3 1 2 3 8 2 1 1 2 1 1 3 1 1
8 | 4 4 2 2 2 4 2 2 1 2 1 1 1
9 | 1 1 2 2 1 3 3 1 2 4 2 1 1 1 1 1
10 | 1 5 1 3 7 1 1 3 1 1 1 1 2
11 | 2 2 3 1 1 1 1 1 1
12 | 1 1 2 2 5 2 1 5 3 5 1 2 1 2 1 1 1
13 | 1 1 1 1 4 4 1
14 | 2 4 6 5 3 2
15 | 1 1 4 4 2 1 1 3 1 4
16 | 1 2 2 2 1 1 1
17 | 1 2 2 3 4 1 5 1 1
18 | 1 2 3 3 3 1 1 1 1
19 | 4 2 4 2 4 1 7 1 1 1
20 | 1 1 2 1 1 1 2 1 1 1 1 2
21 | 2 3 3 4 4 1 3 5 1 1 1 1
22 | 5 6 10 8 13 12 9 2 1 1 1 4
23 | 3 6 6 3 11 8 4 1 1 1 1 1
24 | 1 3 2 6 4 2 4 7 1 1 2 1 1 2
25 | 3 5 3 2 5 1 6 2 3 3 1 1 5 1 1
26 | 3 2 4 3 3 1 4 3 1
27 | 1 5 4 1 4 5 1 1 1 1
28 | 3 2 2 3 4 4 3 1 1 1 1
29 | 1 1 1 5 5 3 9 4 2 3 3 1 1 1 1 1 2 2
30 | 1 2 1 3 8 3 3 5 2 3 3 2 2
---+--------------------------------------------------------------------------
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
2001
Daily rate of long echoes (T > 20 s)
2001
Apr 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
----------------------------------------------------------------
Count 2 2 0 1 2 0 0 2 0 3 2 2 2 2 4
2001
Apr 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
----------------------------------------------------------------
Count 0 5 3 3 0 1 3 1 1 1 0 0 0 3 4
Notes:
-: lost counts because of high noise level or machine failure.
@: Hourly rate estimated by effective observation time less than 60 min.
n: Contamination due to radio noise or interference
e: Contamination due to sporadic E opening
f: No data available due to TX or RX failure
LT = JST = UT + 9 h
. the peak of Lyrids activity probably took place on April 22, 22h UT.
Sadao Okamoto
---------------------------------------------------------------------------
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 170 deg elevation 10 deg.
Frequency: 55.25 MHz
Transmitter: Spanish TV channel E3 (video); transmitters in La Muela (35 kW),
Gamoniteiro (50 kW) and Aitana (60 kW); distance ~ 1000 km
Computer: AST 486 Notebook with Meteor v 4.0 software
| April 2001
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 19 28 13 12 26 34 17 15 22 23 25 12 32 24 29
1 | 10 21 27 25 18 34 22 22 30 33 45 20 29 31 52
2 | 25 37 24 37 20 29 29 38 42 25 33 28 31 19 43
3 | 44 32 23 17 19 30 34 34 36 26 27 34 35 64 37
4 | 48 19 40 24 11 26 34 24 26 45 35 28 24 38 39
5 | 56 42 35 19 57 15 37 55 21 34 27 38 35 27 29
6 | 69 36 40 35 45 21 31 38 17 23 37 41 34 42 41
7 | 35 21 40 45 42 26 32 40 21 19 21 33 36 34 49
8 | 38 20 36 37 25 24 30 27 35 18 32 24 42 33 38
9 | 23 24 18 23 13 25 32 47 30 19 28 33 46 31 39
10 | 30 31 26 22 18 20 38 22 24 27 30 22 41 26 20
11 | 11 14 23 21 27 15 34 16 13 24 22 28 19 35 22
12 | 9 23 23 10 24 19 26 25 17 16 21 33 31 35 38
13 | 17 16 8 12 15 32 10 18 31 19 17 18 8 21 13
14 | 15 14 14 11 9 17 13 15 10 14 18 17 13 11 5
15 | 6 12 23 24 19 18 13 21 11 12 27 20 17 16 7
16 | 9 25 24 18 15 20 11 18 13 8 22 17 15 18 12
17 | 7 15 10 10 9 12 11 8 6 9 17 8 15 14 16
18 | 7 8 16 13 18 19 11 8 20 5 11 12 10 9 13
19 | 9 12 13 10 9 18 6 11 10 7 4 14 11 13 12
20 | 6 14 13 10 17 32 21 17 12 15 12 19 16 11 13
21 | 15 18 10 15 11 23 31 16 19 17 10 15 24 15 17
22 | 17 22 22 21 21 21 19 18 18 19 28 26 23 30 25
23 | 31 25 21 17 23 14 25 18 18 24 14 26 20 30 27
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2001
| April 2001
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 29 30 17 26 15 30 46 43 27 39 28 41 37 12 12
1 | 36 35 22 26 17 25 52 23 22 36 18 27 31 21 16
2 | 33 17 27 23 24 19 48 52 25 35 18 27 32 28 24
3 | 32 17 19 29 47 25 51 33 29 41 34 38 29 35 14
4 | 42 37 30 30 43 42 36 54 33 45 31 77 21 22 43
5 | 59 25 40 38 45 41 50 57 20 24 35 62 27 34 36
6 | 52 39 45 27 45 51 32 44 40 35 26 74 33 62 34
7 | 47 38 37 42 34 38 65 54 39 25 22 89 37 42 46
8 | 16 45 32 29 31 43 60 33 46 43 42 83 36 43 32
9 | 11 30 41 29 42 38 73 46 33 57 61 68 29 36 37
10 | 37 43 34 34 23 46 50 31 30 35 41 34 35 30 45
11 | 23 38 40 30 42 38 33 35 44 36 56 33 19 23 13
12 | 45 32 34 23 32 49 22 34 33 39 27 35 21 31 25
13 | 26 28 29 32 26 44 27 24 26 36 42 28 43 18 15
14 | 23 35 15 29 33 41 17 12 17 23 51 25 40 13 24
15 | 23 15 23 19 14 13 19 15 26 23 37 11 21 22 22
16 | 15 19 27 12 23 19 11 19 25 23 30 17 15 28 26
17 | 20 13 15 16 21 29 9 7 9 7 32 18 6 15 17
18 | 20 12 5 11 15 21 12 13 13 20 27 12 13 5 4
19 | 9 12 14 7 8 15 14 17 10 11 25 15 21 17 5
20 | 21 5 12 6 24 15 14 20 17 18 15 11 15 13 2
21 | 22 10 12 10 16 27 26 14 24 23 39 20 18 27 14
22 | 28 24 21 17 11 21 50 23 21 21 60 33 33 22 20
23 | 22 26 33 18 19 33 29 26 39 26 51 38 28 19 17
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2001
Dave Swan
---------------------------------------------------------------------------
Observer: Pierre Terrier
Location: Canet, France (3 36'E, 43 41' N)
Frequencies: 93.7 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 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's at all hour change and generates RMOB bulletin
automatically
| April 2001
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+-----------------------------------------------------------
0h| 24 18 15 31 25 22 17 23 23 21 30 25 22 17 13
1 | 23 24 27 28 24 31 23 27 26 23 19 17 20 25 26
2 | 21 24 26 30 35 17 28 21 24 21 20 26 18 23 34
3 | 22 35 18 25 16 30 25 23 22 29 31 23 24 20 20
4 | 17 25 25 16 29 19 30 22 27 23 18 25 23 25 27
5 | 27 13 26 20 23 17 21 16 27 21 23 21 24 26 23
6 | 30 14 25 18 26 15 20 24 24 23 24 16 16 23 16
7 | 25 25 24 21 21 17 22 29 33 17 24 0 24 15 22
8 | 12 22 20 30 29 21 25 24 26 27 34 0 23 19 15
9 | 26 21 20 36 22 22 21 21 19 19 21 0 23 21 18
10 | 11 19 23 15 21 25 26 21 20 16 19 2 19 12 18
11 | 16 16 20 29 18 25 34 23 20 28 22 14 15 25 14
12 | 11 12 21 20 22 23 18 26 12 22 26 17 14 19 11
13 | 12 16 18 16 25 12 23 17 11 21 23 21 16 17 15
14 | 11 14 14 13 17 19 18 22 15 17 13 11 12 20 13
15 | 10 10 11 17 16 22 14 8 8 11 10 12 13 11 13
16 | 4 7 10 17 12 17 12 16 6 11 11 12 15 6 11
17 | 6 10 10 10 6 10 7 14 1 7 9 8 6 7 7
18 | 6 9 10 9 4 6 5 8 7 6 9 15 4 2 12
19 | 6 0 9 8 10 7 9 10 4 15 6 10 5 7 7
20 | 9 5 10 8 9 8 9 11 13 9 11 13 9 6 4
21 | 19 5 13 8 7 13 10 13 7 15 12 16 7 13 7
22 | 25 4 14 18 16 6 15 25 9 17 19 15 8 9 11
23 | 20 11 25 17 23 10 24 15 15 17 15 22 9 15 11
---+-----------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2001
| April 2001
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
---+-----------------------------------------------------------
0h| 7 11 15 20 17 25 30 26 27 23 21 14 21 20 24
1 | 12 15 15 18 26 27 29 27 25 21 20 17 20 22 26
2 | 21 12 21 26 26 39 46 26 24 26 22 16 26 24 27
3 | 16 10 19 22 33 38 31 27 23 33 31 16 23 23 35
4 | 18 26 21 16 30 31 27 31 23 27 23 27 29 22 44
5 | 10 9 21 29 20 30 22 28 30 20 32 20 35 24 27
6 | 14 15 20 22 19 34 19 23 25 35 27 34 34 23 32
7 | 10 18 22 31 20 39 29 21 14 33 33 24 32 32 29
8 | 19 23 18 32 31 42 43 17 19 22 29 30 37 27 34
9 | 9 19 27 29 11 42 32 15 20 19 23 24 37 25 30
10 | 13 20 20 19 27 28 36 10 10 20 15 28 30 27 36
11 | 15 13 12 11 24 32 24 13 9 11 16 16 21 18 43
12 | 11 17 22 15 18 26 31 13 10 20 18 20 25 29 39
13 | 15 24 22 15 21 24 19 21 9 15 18 22 23 22 28
14 | 17 13 15 13 20 25 25 11 10 9 7 10 24 23 19
15 | 12 18 17 18 17 16 20 6 6 6 11 8 15 16 28
16 | 8 7 14 12 12 14 12 6 4 6 9 11 15 16 18
17 | 6 8 8 10 11 22 7 3 4 5 7 5 8 8 12
18 | 9 7 10 6 9 6 6 8 4 3 11 15 5 13 4
19 | 5 4 8 8 9 10 9 8 3 11 9 8 1 8 10
20 | 6 3 12 5 10 9 15 6 14 9 7 9 13 8 6
21 | 8 6 9 12 13 16 18 14 18 11 11 9 11 13 10
22 | 20 5 17 12 17 20 17 24 14 18 15 12 15 23 11
23 | 13 13 18 15 21 24 14 13 15 23 17 16 10 23 18
---+-----------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2001
Notes:
. 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: 50.0174 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: AOR AR-5000 all band receiver
Sensitivity: 0.25 uV for 10 dB S/N for USB mode
Observing method: the beacon 900 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.
2001|00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Apr |16h17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
----+-------------------------------------------------------------------------
1 | 5 7 11 11 9 9 17 10 14 12 10 6 6 7 5 - - - - - - - - -
7 | - - - - - - - - - - - - - - - 6 9 9 8 9 5 8 9 7
8 | 7 8 8 5 12 11 15 16 20 12 17 12 8 IN - - - - - - - - - -
14 | - - - - - - - - - - - - - 9 10 11 5 7 Es Es Es 5 4 8
15 | 8 8 10 9 14 19 26 16 17 18 14 - - - - - - - - - - - - -
21 | - - - - - - - - - - - 9 6 17 15 7 IN IN Es Es 10 21 30 28
22 |23 34 45 50 63 79 74 64 62 51 50 35 21 10 - - - - - - - - - -
28 | - - - - - - - - - - - - 12 17 12 7 10 8 15 Es Es 25 39 41
29 |47 55 48 51 50 63 73 45 33 20 13 6 8 7 - - - - - - - - - -
----+-------------------------------------------------------------------------
Apr |16h17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
2001|00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Notes:
. Lyrids activity on April 21-22
. "E" weak E layer sporadic
. "in" artificial interference.
Garfield Tsao
---------------------------------------------------------------------------
Observer: Bruce Young
Location: Deception Bay, Queensland, Australia (27 30' S, 153 10' E)
Frequencies: 88.3 MHz
Transmitter: 88.3 MHz ABC Classic FM, 80 kW transmitter
Location Cootamundra, New South Wales (960 km)
Antenna: 3-element Yagi FM, horizontally polarised,
azimuth 215 degrees (SW), elevation 0 deg.
Amplifier: TV masthead amplifier 15 dB gain VHF
Receiver: Samsung domestic type FM radio, digital tuning
Observing: Electronic interface on LINE output audio signal is fed in
method COM1: of PC IBM 486 25 MHz.
METEOR v 4.0 version processes the signal and records on
floppy disk the time of the events.
METEOR parameters: THRESHOLD = 8
| April 2001
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
----+------------------------------------------------------------
0h| 15 17 11 18 17 19 12 18 13 28 14 27 24 17 26
1 | 13 8 - 12 20 12 13 19 11 15 19 25 34 26 23
2 | 8 8 - 16 8 17 8 16 15 15 21 26 20 9 18
3 | 11 9 - 15 11 26 9 17 10 15 19 18 11 13 17
4 | 10 13 - 11 16 13 9 17 11 11 18 16 14 14 20
5 | 0 13 5 1 6 14 8 11 3 7 17 13 12 8 16
6 | 6 19 8 8 7 12 12 7 9 10 13 14 9 9 12
7 | 6 13 10 6 10 8 20 8 6 10 11 15 13 7 13
8 | 12 13 11 11 7 11 17 13 13 13 13 18 17 18 29
9 | 12 11 23 6 23 19 13 11 9 12 17 23 17 16 22
10 | 24 11 21 12 27 30 26 16 26 26 21 28 27 30 27
11 | 25 14 34 28 27 26 30 35 25 44 35 33 32 45 35
12 | 29 21 33 24 14 33 26 26 37 34 25 34 42 33 46
13 | 23 35 29 19 28 20 40 23 43 22 37 29 29 21 23
14 | 35 42 26 32 30 32 22 - 20 33 18 35 29 32 32
15 | 29 25 31 37 33 35 46 - 40 41 34 38 26 28 34
16 | 51 41 43 41 54 45 44 - 31 37 44 43 30 35 35
17 | 50 36 55 40 45 49 37 - 38 31 36 41 52 31 44
18 | 51 38 47 43 29 47 45 - 42 30 39 43 28 44 34
19 | 41 36 40 37 47 39 35 - 34 40 43 39 42 49 35
20 | 45 29 49 41 54 47 40 50 41 42 41 39 40 66 54
21 | 35 39 32 - 38 51 45 32 38 32 40 44 37 58 46
22 | 24 16 19 22 35 28 43 36 32 33 38 41 44 29 38
23 | 17 17 22 18 24 20 32 19 27 23 22 22 20 21 27
----+------------------------------------------------------------
UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| April 2001
| April 2001
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
----+------------------------------------------------------------
0h| 27 14 35 30 28 8 15 12 - 13 27 20 24 34 24
1 | 27 16 40 33 30 20 20 9 - 27 25 19 19 21 35
2 | 29 27 25 28 14 12 16 12 - 14 31 20 19 26 27
3 | 15 17 26 15 13 7 4 8 - 19 25 10 13 16 20
4 | 18 27 21 15 19 9 6 8 - 4 14 12 14 19 14
5 | 15 22 21 20 14 10 5 6 8 6 13 11 9 14 14
6 | 13 20 8 21 10 5 7 8 7 12 10 10 6 14 19
7 | 24 6 18 15 15 2 7 10 10 12 15 17 12 12 26
8 | 20 15 22 18 8 5 5 16 12 16 19 8 9 10 13
9 | 28 19 24 19 34 13 10 9 18 26 13 17 15 11 9
10 | 34 30 35 34 29 17 22 21 30 29 24 16 18 33 20
11 | 36 38 * 44 29 30 31 29 37 36 24 38 40 28 34
12 | 56 44 * 49 34 22 47 21 34 41 30 24 32 36 36
13 | 44 41 35 34 29 22 28 41 29 25 23 27 27 23 42
14 | 44 26 23 28 34 30 39 32 28 29 18 28 37 31 29
15 | 33 29 40 47 56 44 36 34 30 25 17 31 35 35 32
16 | 51 26 35 47 43 51 34 52 41 42 37 50 43 45 44
17 | 40 40 42 56 57 50 39 49 37 37 25 42 51 43 51
18 | 34 42 48 61 44 41 46 45 24 49 36 44 44 41 37
19 | 39 31 35 49 52 60 41 36 54 50 30 40 52 37 44
20 | 56 44 43 40 54 63 63 32 59 42 52 66 69 58 62
21 | 42 54 57 56 40 40 52 28 47 49 56 60 60 56 69
22 | 45 26 39 22 29 30 28 16 31 30 29 40 47 37 46
23 | 31 25 31 20 13 8 13 14 16 26 15 21 28 37 24
----+------------------------------------------------------------
UT | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
| April 2001
Notes:
. - no results
. * suspected interference
. local time = UT + 10 hours
Bruce Young
---------------------------------------------------------------------------
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.
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 2001
UT | 21 Apr 22 Apr 23 Apr 24 Apr
----+-------------------------------
0 | 292 378 328
1 | 301 406 301
2 | 306 365 316 341
3 | 276 335 292 311
4 | 334 430 303 305
5 | 348 436 372 469
6 | 411 462 384 518
7 | 426 559 379 343
8 | 383 485 362 385
9 | 400 450 284 281
10 | 382 331 232 175
11 | 322 268 226 180
12 | 302 323 212 200
13 | 309 261 200
14 | 239 177 184
15 | 219 217 189
16 | 198 180 172
17 | 237 182 209 187
18 | 231 188 188 232
19 | 239 219 216 228
20 | 260 237 242 229
21 | 262 278 255 265
22 | 284 265 292 263
23 | 309 286 306
----+-------------------------------
UT | 21 Apr 22 Apr 23 Apr 24 Apr
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)
Michael Boschat
Royal Astronomical Society of Canada - Halifax Center
6391 Liverpool St., Apt.1, Halifax, Nova Scotia, Canada B3L 1Y1
mailto:andromed@atm.daldot ca
http://www.atm.daldot ca/~andromed
Gabor Bucsi (Gaboka)
Bekes, Hungary
mailto:gabo_hu@bekesnet.hu
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, mailto:paul_vauterin@applied-maths.com
TianJing Ouyang (TIAOU)
Wuhan, Hubei Province, P. R. of China
mailto:oy_tj@sina.com
H. W. Kelsey, A.L.P.O.
Conway, Arkansas, USA
mailto:wkelsey@conwaycorpdot net
Lycee Langevin, Patrick Decomble
La Seyne sur Mer, France
mailto:sti.langevin.nice@wanadoo.fr
Alastair McBeath
IMO: International Meteor Organization
12A Prior's Walk, Morpeth, Northumberland, NE61 2RF, England, U.K.
mailto:vice_president@imodot net
Stan Nelson, KB5VL
Roswell, NM 88201, USA
mailto:sanelson@rt66.com
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
Chris Steyaert, VVS
Kruisven 66, B-2400 Mol, Belgium
tel: +32 (14) 31 51 04
mailto:steyaert@vvsdot be
Dave Swan
Christchurch, UK
mailto:daveswan@dorsetpubs.com
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/
Garfield Tsao (BM2EQB)
LonTan Observatory, LonTan, TauYan, Taiwan
mailto:tsao5916@ms4.accmail.com.tw
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:JeroenVanWassenhove@yucomdot be
Bruce Young
Brisbane, Australia
mailto:B.Young@uqdot net.au
Ilkka Yrjola
Kuusankoski, Finland
http://www.sci.fi/~oh5iy
Ham Call: OH5IY
--
Christian Steyaert (RMOB0104) 7 May 2001
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