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(meteorobs) Radio Meteor Obs. Bull. April 2000



Radio Meteor Observation Bulletin No. 81                        May 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:   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: own written software "MSD" with sound card.


    |   Apr 2000
 UT |  1   2   3   4    5    6    7   8   9  10  11  12  13  14  15
----+--------------------------------------------------------------
  0h| 15   9  12  27   19   11   22  13  11   8   4   4  18   3   6
  1 |  8   6   5  18   12   14   16  16  11   6   5   5  10   2   7
  2 |  6       6  13   26   14   10  17   7   6   8   5  11   3   2
  3 |  3   6   8  12   17    8   17  15  17   9   5   3   6   0   6
  4 |  6   9  11  17   22   13   10  23   3   4   6   2  13   5   2
  5 |  4  18   5  24   29   14   27  22  10  14   6   5  15   6   6
  6 | 10  16   6  16   19   19   23  24  13   9   7   6   9   6   8
  7 | 16   9  21  19   16   15   62  21  20  13   4  10  31   5   7
  8 |     11  26  41   19   28   72  21   7   5   8  35  13  10  15
  9 |      8  29  62   31   24   25  23  18   9  11  27  34   9  10
 10 |      8  36  36   18   16   26  59   9   1   8  21  16   7   8
 11 | 13   5  14  23    8    6   12   7   7   0   5  15  22   7   9
 12 | 11   5   9  18   16    9   13  11   9   2   3  13  17   7   3
 13 | 10   9  19  21   13   17   14  13  10  18   1  10  19   8  13
 14 | 10  10  18  19   20   12   14  10   9  14   6  20  12   6   5
 15 |  7   6  18  16    7    6    4  10  15  11   2  15  15  14   5
 16 |  4   9  15  11    8    5   15   2   5   3   1  15  13   5   1
 17 |  5   2   8   7   13   10    9  11   2   6   6  14  13   3   5
 18 |  6   2  13  15    4    9    2   7  14   0   6  11       2   1
 19 |  9   9  11  14    9    5    5   6   6   5   4  18   1   1   4
 20 |  6   9  17   5    5   10   11   6   9   4   2  10   7   8   0
 21 | 12   1  20  23   18   15   13  21   8  10   6   6   2  10   6
 22 | 19   7  16  14   17   15   19  17  13   7   2  20   5   7   8
 23 | 18   7  11  20   14   19   21   9  14  11   2  20   0   4   2
----+--------------------------------------------------------------
 UT |  1   2   3   4    5    6    7   8   9  10  11  12  13  14  15
    |   Apr 2000

    |   Apr 2000
 UT | 16  17  18  19   20   21   22  23  24
----+--------------------------------------
  0 |  2   3   3   4    3    8   30  11   4
  1 |  3   7   2   3    7   10   13  18   5
  2 |  2   4   3   7    1    9   15  19   3
  3 |  4   4   0   3    8    3   16   4   3
  4 | 10   6   5   7   12    7    9  12   5
  5 |  9   5  10  11    3    4   10   9  15
  6 |  2  11   6  17    6   12    4  15  15
  7 | 21  10   7  10   11   27   19  33  23
  8 |  9  24  12  10   21   24   30  11   8
  9 |  7   5  20   8   16   23   17   6  14
 10 |  7  21  10   7   13   33   12   7  12
 11 | 17   5   6   7    8    9   12   6   7
 12 |  2   6   3  12    8    7   21   4  28
 13 |  6   8  14   5   13   12    8   2   5
 14 |  9  12  13   8   18   13   16   8   7
 15 |  5   6   6   6    6    9    9   7   4
 16 |  1   8   6   1    5    8    4   4   4
 17 |  1   7   7   4    4    5   10   4
 18 |  2   0   2  10    4    9    4   7
 19 |  2   3   5   5    7   11    3   3
 20 |  3   6   5   1    3    3    6   4
 21 |  5   4   5   4   11    9   12  10
 22 |  4   3   3   6    5   28   10   6
 23 |  3   8   5   8   16   21   11   4
----+--------------------------------------
 UT | 16  17  18  19   20   21   22  23  24
    |   Apr 2000


      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 2000

           Number of meteors heard in one hour interval

2000| UT
Apr | 09h 10  11  12  13  14  15  16  17  18
----+---------------------------------------
05  |  -   -   -  18  31  24  17   -   -   -

19  |  -   -   -  11  21  24  15   -   -   -
20  |  -   -  20  19  26  27  29  19  13   -
21  |  -   -   9  22  20  17  28  26  18  11
22  |  -   -  12  17  19   -   -   -   -   -
----+---------------------------------------
    | 09h 10  11  12  13  14  15  16  17  18


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].


                        April  2000

   Raw counts of reflections with a duration of at least 0.027 s
   during one hour interval starting at UT:

  Apr |  UT
 2000 |  20h  21   22   23   00   01   02   03   04   05   06
------+------------------------------------------------------
 1- 2 |       20   14    1    2    1   11   48   54  108   64
 2- 3 |       22    ?    ?    2    7   31   35    ?    ?    ?
 3- 4 |       19    8    3    1    8   32   41   96  101   50
 4- 5 |       20    7    7    2    8   42   41   88   87    ?
 5- 6 |
 6- 7 |       30    3   36?   3   10   27   44   61   35   41
 7- 8 |       22   44?  19?  23    8   39   63   55   98   49
 8- 9 |        9   26?   2    7    9    9   47   72    ?   96
 9-10 |       14    8    1   12    7   35   52   64   57   97
10-11 |       12   19    7    4    9   19   51   50   68   86
11-12 |       26    4    2    1   10   38   48   52   49   73
12-13 |       23    5    2    3    8   25   47   59   59   69
13-14 |        9    8    2    6   14   32   67   78   74  111
14-15 |       20   12    7    5    9   33   55   48   83   38
15-16 |       11   16   20    3    2   10   51   39   72   90
16-17 |        0   16   20    5    1   11   28   54   28   64
17-18 |       18   25    2    0   10   34   86   48   69   70
18-19 |
19-20 |   23  22   16    7    3   11   52   67    ?    ?   72
20-21 |    ?  26    ?   10    5   13   42   79   29  108   59
21-22 |   53? 78?   2    3    4   13   44   83   84   95   67
22-23 |   28  16    1    0    1    4   19   63   63   79  101
23-24 |    ?   ?   38?  60    4   12   52   83    ?    ?  103
24-25 |
25-26 |    3  20   20    2    3   10   21   36   39   91   38
26-27 |   33  26   20    1    0   21   41   68    ?   73   11
27-28 |   22  22    2    3    7   22   40   66   54    ?    ?
28-29 |   34  25    1    6    2   16   31   81   93  101   43
29-30 |   36  19    2    6    2    4   16   59   78    ?    ?
30- 1 |            29    2   11    ?    ?
------+------------------------------------------------------
 2000 |  20h  21   22   23   00   01   02   03   04   05   06
  Apr |  UT


   Raw counts of reflections with a duration of at least 1.000 s
   during one hour interval starting at UT:

  Apr |  UT
 2000 |  20h  21   22   23   00   01   02   03   04   05   06
------+-------------------------------------------------------
 1- 2 |        1    1    0    0    1*   1    4   14*  29?  15*
 2- 3 |       12*   ?    ?    2*   0    7*   3   25*   ?   32*
 3- 4 |        1    0    1*   0    3*   7*   6   16   15    5
 4- 5 |        3    3*   0    0    0    0    7   12   17    ?
 5- 6 |
 6- 7 |        5    0    ?    1*   1    2    1   10    3    2
 7- 8 |        5*   7    4*   ?    1   11?  10   10   16    6
 8- 9 |        6*   3    1*   0    0    0    5   14    ?   18
 9-10 |        7*   0    0    6*   1    0    5    8   16*  23*
10-11 |        1    2*   2*   2*   1    1    6   11*  14*   ?
11-12 |        3    1*   0    0    2    6    2    8    4   13
12-13 |        3    1    0    1*   1    7*   5    7   12*  26*
13-14 |        1    1    1*   1    1    4    7    ?   12   22
14-15 |        1    2    4*   2*   2*   3    6    7   10    6
15-16 |        2    2    5*   0    0    2    7    1    8   24*
16-17 |        0    1    5*   1    0    5*   2   11*   0   17
17-18 |        3    6*   0    0    0    4   12    1    1   17*
18-19 |
19-20 |   4    3    8?   3*   0    4   12?   7    ?    ?   20*
20-21 |  12    8*  34?   3*   1    0    8   17*  22   27*  14*
21-22 |  14*  18*   0    2*   0    2    4   11   10   29*   7
22-23 |   8*   2    0    0    0    1*   4*   4   11   19   15
23-24 |   ?*   ?   21?   ?    1*   2    4   10    ?    ?    ?
24-25 |
25-26 |   0    8?   1    0    0    1    1    4   11*   ?    7
26-27 |   3   10?   6?   0    0    3    6   12    ?   17*   2
27-28 |   2    4    0    1*   3*   4    3    8    4    ?    ?
28-29 |   5    3    0    1    1*   2    5   10   20*  25*   7
29-30 |   6    4*   1*   1    0    0    0   10*  20*   ?    ?
30- 1 |             6*   0    3*   6    6
------+-------------------------------------------------------
 2000 |  20h  21   22   23   00   01   02   03   04   05   06
  Apr |  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


      Maurice De Meyere

----------------------------------------------------------------------
Observer:    Didier Favre
Location:    Annecy, France, 6 08' E, 45 55'
Frequency:   105.75 MHz
Antenna:     3 elements Yagi, direction North-East, elev. 60 deg
Receiver:    Tuner Yamaha TX-480L
Observing method: METEOR v 4.0 on a 66 MHz PC486, THRESHOLD = 6
             The recordings have been corrected in displaying the RAW
             file with Colorgramme v1.5


    |   Apr 2000
 UT |  1   2   3   4   5   6   7   8   9  10  11  12  13  14  15
 ---+-----------------------------------------------------------
  0h|  1   0   0   0   0   0   0   0   0           2   2   7   3
  1 |  0   0   0   0   0   0   0   0   0           6   1   3   1
  2 |  0   0   0   1   0   0   1   0   0           4   2   3   1
  3 |  0   0   0   0   0   0   0   0   0           7   2   5   0
  4 |  0   0   1   0   0   0   2   0   1           3   3   3   0
  5 |  1   6   0   0   0   0   1   0   0           4   2   0   2
  6 |  0   0   0   0   0   0   1   0   0           0   1   2   1
  7 |  0   0   0   0   0   0   0   0   0           4   4   2   5
  8 |  0   1   0   0   0   0   0   1   0           4   5   3   8
  9 |  0   0   0   1   0   1   0   0   0           1   1   2   6
 10 |  0   0   0   0   1   0   0   0   0           5   0   1   2
 11 | 11   0   0   0   0   0   0   0   0           5   9   1   2
 12 |  2   0   1   0   0   1   0   0   0           0   5   6   1
 13 |  1   0   1   0   0   0   1   0   0           2   2   5  13
 14 |  5   1   0   0   0   0   4   0   1           7   0   5   8
 15 |  1   0   0   0   0   0   1   0   0           2   0   0   0
 16 |  0   0   0   0   0   0   0   1   1           1   0   2   0
 17 |  0   0   0   0   0   0   0   0   0           4   4   2   2
 18 |  0   0   3   0   0   0   0   0   0           0   3   0   2
 19 |  0   0   3   0   0   1   1   0   0           1   0   0   3
 20 |  0   0   3   1   0   0   0   0   1           1   2   0   0
 21 |  0   0   0   0   0   0   0   0   1           0   0   0   0
 22 |  0   0   1   0   0   0   0   0   1           1   1   2   1
 23 |  0   0   0   0   0   0   0   1   2   6   0   5   2   0   1
 ---+-----------------------------------------------------------
 UT |  1   2   3   4   5   6   7   8   9  10  11  12  13  14  15
    |   Apr 2000


    |   Apr 2000
 UT | 16  17  18  19  20  21  22  23  24  25  26  27  28  29  30
 ---+-----------------------------------------------------------
  0 |  2   4   3   1   2   3   0   0   0   0   0   3   1   -   0
  1 |  1   4   1   3   1   2   2   -   0   1   1   1   0   0   1
  2 |  1   0   2   4   1   3   8   0   1   0   1   0   0   1   4
  3 |  3   1   0   0   1  11   0   1   0   1   0   0   2   3   -
  4 |  4   7   1   2   1   0   1   3   5   0   1   5   0   1   -
  5 |  3   1   6   0   4   3   0   3   1   1   2   2   3   3   -
  6 |  1   0   5   0   2   1   0   0   6   1   1   5   4   2   -
  7 | 11   1   1   4   1   4   1   6   2   1   6   2   4   1   -
  8 |  1   4   1   1   2   2   3   3   0   1   1   4   1   0   -
  9 |  3   3   3   1   0   0   1   1   2   5   8   5   0   -   -
 10 |  1   0   1   0   1   4   1   1   1   6   2   2   0   -   -
 11 |  2   2   0   0   2   0   0   2   2   -   -   0   2   1   -
 12 |  1   1   5   0   0   0   0   0   ?   4   0   0   0   -   1
 13 |  0   0   1   3   0   2   1   -   3  10   -   -   1   0   1
 14 |  3   6   1   0   1   5   1   0   1   0   2   1   0   -   1
 15 |  0   1   3   0   0   -   0   0   3   0   1   3   4   2   1
 16 |  0   0   1   1   0   8   0   0   3   0   2   1   -   0   -
 17 |  1   1   0   1   0   5   0   0   0   1   2   3   1   -   -
 18 |  0   0   2   0   0   3   1   0   0   0   0   0   1   -   -
 19 |  1   1   2   0   0   2   1   0   0   2   0   1   -   -   -
 20 |  1   1   1   2   0   2   1   0   1   1   0   0   -   -   -
 21 |  1   4   2   2   0   1   1   2   0   0   0   1   1   0   0
 22 |  4   3   1   0   0   0   1   0   1   1   0   0   1   0   0
 23 |  0   3   3   1   0   1   2   0   0   1   1   2   0   0   0
 ---+-----------------------------------------------------------
 UT | 16  17  18  19  20  21  22  23  24  25  26  27  28  29  30
    |   Apr 2000


      Didier Favre

----------------------------------------------------------------------
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.ac.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 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 |   2   7   4   2   2   3  12   2   4   2   1   2   3   1   5
 1 |   5   3   6   2  11   1   3   9  12   2   4   3   2   2   2
 2 |   4  10  20   5  13  17  15   8   6  11   6  10   7   7  15
 3 |  14  35  11  25  25  17  16  31  37  32  31  20  13  26  33
 4 |  18  13  10  41  12  19  14  22  14  18  47  22  18  16  26
 5 |  14  12  18  21  51  14  22  25  21  17  27  25  11  17  38
 6 |  12  22  18  21  14  23  22  24  33  19  18  35  25  57  42
 7 |  20  28  13  18  10  15  26  27  13  11  13  22  22  23  35
 8 |  24      20  37  13  19  16  12  53      16  12  12   9  18
 9 |  30  22  21  22   6  22  34  19  34  15  20  13  24  31  19
10 |  13  12  16  16  18  15  14  51  35  18  12  18  12  27  34
11 |  19  23  52  19  22  10   8  25  18  21  13  10  13  33  31
12 |  25  19  11  14  12   7   5  24  18   6  11   6  14  13  24
13 |   9   6   9  15   8   7   7  15  13   5   4   7   4  11  19
14 |  15   4   8   7   4  14   7   7  28  14   6   6   7   6  10
15 |   4   4   6   8   6   6   6  10   7   3   8   2   4  13   8
16 |   4   4   1  10   3   2   5   2   2   5   7   4   8  10   4
17 |   3   9   4  16   3   2  15   8   4  16   8   9   8   3   4
18 |   6   1  10   7   3   3   2   2   5  10   8   4  21   5   5
19 |   5   4   2   5   5   3  22   4   6   3   5   7  10   3   5
20 |   6   6   3   7   7   3  12   8   4   7   7   2   4  13  21
21 |   3  11   3   5   3  25   8   6   3   6  13   5   2  21   9
22 |   2   0   1   7   1   1   1   3   4   1   1   2   2   1  22
23 |   2   3   1   5   5   1  12   3   1   1   1   1   2   1   0
---+------------------------------------------------------------
   |   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15

   -------------------------------------------------------------
   | Apr 2000 | 10x % reflec. time | horiz: day | vert: time UT|
----------------------------------------------------------------
   |  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30
---+------------------------------------------------------------
 0 |   3   1   6   3   3   6   7   7  12   5   8   1  11   2   4
 1 |   2   1   7   2  13   9   6   8   4   6   4   7   9   6  15
 2 |   7  13  11  21  15  36  31  16  11  10  15  25  17  15  14
 3 |  33  23  50  18  16  49 110  50  28  23  38  41  26  40  44
 4 |  12  15  30  22  33  42  70  35  31  18  36  44  21  24  28
 5 |  28  17  54  33  17  60  90  32  41  27  29  44  21  41  46
 6 |  17  32  40  20  13  33  60  55  29  43  15  32  16  60  57
 7 |  38   7  32  26  16  44  75  67  67  29  26  23  40  53  61
 8 |  57  14  30  22  38  41  89  49  57  35  40  48  20  54  34
 9 |  43   9  24  22  29  26  61  43  60  55  23      15  46  89
10 |  30  15  32  20  27  29  34  48  18  33  16  27  14  53  45
11 |  15  15  15  37  28  20  33  31  48  20  29      15  39  46
12 |  23  19  10  22  31  14  29  30  41  23  15  64  20  23  42
13 |  32   8  15  13  15  19  19  18  19  15   7      20  19  31
14 |   8   5  20  13  14   6   7  11  10  15   6  13  10  19  22
15 |   5   4   5   3   4   7  13  14   6  24   5   7   6  10  14
16 |   8   3   9   5   3   4  12  11   5   3   3  10   9  11   4
17 |   9   3   7   9   3  11  10   8   6   4   5   3   9   5   9
18 |  10   5   4   7   7  12  22   6  15   5   2  12   5   9   4
19 |  11   5  19   3  21  28   5   4   5   5   6   3   5   6   4
20 |   4  15   9   6  14  22  15   9   6  13   6  11   8   5   5
21 |   3   9  18   3   3  43   7   4   5   8  10  13   2   2  14
22 |   1   3   6   2   2   1   1   3   5   1   2   3   2  11   1
23 |   2   2   2   3   9   1   1   4   5   1   1   1   2   3   1
---+------------------------------------------------------------
   |  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30

Notes:
 . the Lyrids show up nicely, notwithstanding the current constraints.
 . also noticeable is the slight increase towards the end of the month
   which continues in May (apparently starting slightly earlier than
   during the previous years).


      Pierre De Groote

---------------------------------------------------------------------------
Observer : Rafael Haag
Location : Porto Alegre, Brazil ( 51 10' W, 30 30' S)
Frequency: 83.25 MHz
Receiver:  home made convertor, 1.5 dB noise and Sony ICF-7600G as FI.
           0.2 uV for 10 dB S/N
Transmitter Location: many stations, video carrier C6
Antenna: 2 element Yagi, elevation 90 deg (zenith)
Observing method: the audio signal of the video carrier is fed into PC sound
port.


                  April 2000

Number of meteors heard in one hour interval

 UT |   Apr 21    Apr 22    Apr 23
----+-----------------------------
 00h|     23        26        25
 01 |     25        29        29
 02 |     35        39        33
 03 |     49        58        40
 04 |     55        59        42
 05 |     63        76        65
 06 |     60        68        72
 07 |     65        72        69
 08 |     61        65        71
 09 |     54        58        61
 10 |     56        53        52
 11 |     47        47        43
 12 |     43        46        50
 13 |     39        31        44
 14 |     33        35        29
 15 |     31        32        30
 16 |     22        28        24
 17 |     15        22        17
 18 |     18        16        17
 19 |     16        20        14
 20 |     17        18        15
 21 |     21        24        19
 22 |     20        24        23
 23 |     19        27        25


Note: I think this is the first bulletin of a Brazilian Forward Scatter Meteor
      Station! From May or June onwards, the Radio Meteor Observatory
      will be operating permanently.


      Rafael Haag

---------------------------------------------------------------------------
Observer: Werfried Kuneth
Location: Ferndorf, Austria (13 37' E, 46 45' N)
Antenna:  2 element Yagi, direction southeast, no elevation at 1 m height.
Receiver: IC-706 at 53.76065 MHz, CW-R mode, 500 Hz CW filter, fast AGC.
Transmitters: 1) 30 kW TV video carrier from Bari, Italy, distance 700 km,
          direction south and 2) a 30 kW TV video carrier from Sicilia,
          Italy, distance 900 km, south. The total echo power of both
          transmitters is processed into same 40 Hz virtual
          receiver channel.
Observing method: automatic setup using FFTDSP42t software by AF9Y to record
          the audio signal. 20 channels of 2 Hz width are used for meteor
          identification, with manual interference rejection.
          Sampling interval: one 4096 point FFT every 0.5 seconds.

 The monthly results showing the total reflective time are now also
 available at http://www.qsl.net/oe8fnk this includes now also Es, FAI
 and radio fireball statistics, and the original leonids 1999 peak recordings.

 The meteor counts below are corrected for a full hour observing time. If
 the recording duration is 20-40 minutes, a dot is shown after the value, to
 show the reduced accuracy. Results for less than 20 min. observing time are
 excluded.


      Counts of reflections longer than 3.5 seconds

   |   Apr  2000
 UT|  1   2   3   4   5   6   7   8   9  10  11  12  13  14  15
---+------------------------------------------------------------
  0|  3   0   5   3   3   2   1   2   6   6   9               1
  1|  6   1   3   1   7   3   4   9   3   4   6               5
  2|  6   2  11  10   4   4   4   5   7   6   6               6
  3|  6   7   9   5   7  10   1   3   2   2   2               4
  4|  5   6   6   2   5  12  11   7   7   2   6              11
  5|  4  13   4  11   6   1   6   4  12   8   6               5
  6|  2   4  12   6  10  11  11   9   9   6  10              12
  7| 10   7   8  10  12   5  11  12  12  12  14               8
  8|  5   9   6  13  12   4  12   8   4   8   8              11
  9|  9   5  10   6  11  10   8   4   6   5                   4
 10|  7  10  10   4   5   5   4  10   3  10                   4
 11|  7   3   5   5   6  10   1   7   5  12               9   3
 12|  1   3   3   7   4   6   7   7   4   9               8   7
 13|  4   2   6   5   6   6   3   3   4   8               3   7
 14|  1   2   3   1   4   4       3   3   4               5   2
 15|  0   2   3   2   3   0   0.  3   4   2               0   2
 16|  1   0   1   1   4   0       0   0   2               1   1
 17|  3   1   3   1   1   1   0.  2.  3   0               0   2
 18|  1   2   1   3   0   0   0   1   3   1               2   2
 19|  0   2   3   2   0   1   1   2   4   0               4   2
 20|  4   2   2   1   0   4   0   5   0   4               1   0
 21|  1   6   1   6   3   1   7   1   2   1               1   4
 22|  2   1   2   3   3   4   0   3   4   1               2   2
 23|  2   2   6   2   4   4   3   4   1   1               5   8
---+------------------------------------------------------------
 UT|  1   2   3   4   5   6   7   8   9  10  11  12  13  14  15
   |   Apr  2000

   |   Apr  2000
 UT| 16  17  18  19  20  21  22  23  24  25  26  27  28  29  30
---+------------------------------------------------------------
  0|  2   6   0.  6   8   9  12   9   4   7   5   1   4   9   5
  1|  7   2       8   9  16  11   9   4   5   6   5   2   7   8
  2|  3   6       9   4   7  11   7   2   2   2   9   5   8   8
  3|  3   7       6  16  10  16  10   6   5   2   3  10   3  10
  4| 12  13       9  13  15  19  20   8   9   9  14   3   3   8
  5|  6  10   0. 10  10  18  21   7   9   8   9  13  13  15. 14
  6|  3   9  12  10   9  14   9   7   9   7  10   8  11  10  19
  7|  3  13  10  10  13  15  20  22   8   8   7  12   8  13   9
  8| 10   9   6  15  11  13  14       5  12  12  10  17  13   5
  9|  6   7   5.  9   5   8  12   4   6   9   5   7   7   4   5
 10|  7  12  10   6   4   3   8  11   5   6  11   6   6  12  16
 11| 11   9   3   4   6   5  12  11  10  14   8   8  16   6   9
 12| 12   7   7   6   2   7   7   8   5  11  11   4  14   5   5
 13|  5   5   5   1   6   4   8   6   5.  4  10   6   5   4   7
 14|  3   7   0   2   2   4   0   3   4   7   4   5   3   2   0
 15|  0   4   4   1   1   3   2   0   3   0   2   0.  3   0   0
 16|  2   2   3   0   4   0   0   4   2   1   1       4   1   3
 17|  1   2   3   0   2   0   0   2   1   1   0       2   2   1
 18|  0   2   0   1   3   0   3   1   0   2   1   2   1   0   1
 19|  2   1   0   4   2   1   3   1   1   1   1   1   2   2   0
 20|  3   2   2   2   4   4   2   3   3   4   2   1   2   4   2
 21|  1   4   0   1   6   9   3   3   2   1   3   2   0   3   1
 22|  8   3       3   4  14   6   7   1   1   4   3   3   5   1
 23|  5   4   5   5   3  14   5   3   8   4   7   5   3   5   3
---+------------------------------------------------------------
 UT| 16  17  18  19  20  21  22  23  24  25  26  27  28  29  30
   |   Apr  2000

             Propagation overview for April 2000

    E : sporadic-E or E-layer propagation
    F : FAI (field aligned irregularity)
    - : propagation only via meteor echoes.
    (blank) : no data available

   |   Apr  2000
 UT| 1 2 3 4 5 6 7 8 9101112131415161718192021222324252627282930
---+------------------------------------------------------------
  0| - - - - - - - - - - -       - - - - - - - - - - - - - - - -
  1| - - - - - - - - - - -       - - -   - - - - - - - - - - - -
  2| - - - - - - - - - - -       - - -   - - - - - - - - - - - -
  3| - - - - - - - - - - -       - - -   - - - - - - - - - - - -
  4| - - - - - - - - - - -       - - -   - - - - - - - - - - - -
  5| - - - - - - - - - - -       - - - - - - - - - - - - - - - -
  6| - - - - - - - - - - -       - - - - - - - - - - - - - - - -
  7| - - - - - - - - - - -       - - - - - - - - - - - - - - - -
  8| - - - - - - - - - - -       - - - - - - - -   - - - - - - -
  9| - - - - - - - - - -         - - - E - - - - - - - - - - - -
 10| - - - - - - - - - -         - - - E - - - - - - - - - - - -
 11| - - - - - - - - - -       - - - - E - - - - - - - - - - - -
 12| - - - - - - - - - -       - - - - - - - - - - - - - - - - -
 13| - - - - - - - - - -       - - - - - - - - - - - - - - - - -
 14| - - - - - - F - - -       - - - - - - - - - - - - - - - - -
 15| - - - - - - F F - -       - - - - - - - - - - - - - - - - -
 16| - - - - - - F F - -       - - - - - - - - - - - - -   - - -
 17| - - - - - - - F - -       - - - - - - - - - - - - -   - - -
 18| - - - - - - - - - -       - - - - - - - - - - - - - - - - -
 19| - - - - - - - - - -       - - - - - - - - - - - - - - - - -
 20| - - - - - - - - - -       - - - - - - - - - - - - - - - - -
 21| - - - - - - - - - -       - - - - - - - - - - - - - - - - -
 22| - - - - - - - - - -       - - - -   - - - - - - - - - - - -
 23| - - - - - - - - - -       - - - - - - - - - - - - - - - - -
---+-------------------------------------------------------------
 UT| 1 2 3 4 5 6 7 8 9101112131415161718192021222324252627282930
   |   Apr  2000

Notes:
 . Lyrids active from April 19 to 22.
 . from April 25 the Eta Aquarids activity starts.
 . local time conversion: 2 hours ahead of UT (6h local = 4 h UT).


      Werfried Kuneth

---------------------------------------------------------------------------
Observer:      R.B. Minton
Location:      Raton, NM (104 26' W, 36 54' N, 2000 m above sea level)
Frequency:     92.9 MHz
Transmitters:  KTZA FM 100 kW, Artesia NM,     dist 444 km, geogr azim 178 deg
               KSPZ FM  53 kW, Color. Springs, dist 217 km, geogr azim 352 deg
               KYBR FM   ? kW, Espanola NM,    dist 180 km, geogr azim 236 deg
               ???? FM   ? kW, Juarez Mexico,  dist 579 km, geogr azim 198 deg
               KWFM FM  90 kW, Tucson AZ,      dist 798 km, geogr azim 233 deg
Antenna:       folded dipole, on 6.3 m high mast, oriented N-S
Receiver:      Subaru 12 V DC car radio with digital tuning
Observing method: conditioned audio input in the game port of an IBM 386 SX-50
               PC, 128 samples/second, DOS/Basic software, automatic


                        Total hourly counts

                             March 2000
 Mar| UT
2000|  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 |  6  7 10  5 12  8  5  6  4  4  7  6  4 10  3 10 13 11 14 10  9 10 16 11
  2 | 12  8 14 31  5  7  2  4  3  0  3  3  0  5  4  2 10  1  7  4  5  6  9 11
  3 |  8  5  4  5  6  6  6  6  4  2  4  3  4  3  4  3 13 12 12  7  7  4  9 11
  4 | 13  7 11  9 10  9  4  7  7  3  4  5  7  4  7  1 17  9 11  6  5  4 11 22
  5 | 16  4  3  0  0  0  1  2  2  7  4  3  3  5  2  3  0 20  7  3  6  2  4  6
  6 |  3  5  7  4  4  3  4  4  4  6  3  2  2  4  3  7 10  9 13  9  3  6  6  6
  7 |  4  8 13  5  9  2  7  9  5  8  2  4  5  2  9  1 10 17 21  5  6  3  7  7
  8 |  4  5 13 10  3  3  4  6  4  8  8  2  5  5  9  6 19 19 11  9  7  2  5  8
  9 |  9 16 11 13  7  8  2  3  3  4  5 11  6 11  4 10 19 11 13  5  6  2  5  4
 10 | 13  2  5  6  6  8  3  4  2  3 10  6 10  4  2  9 17 12 17  7 12 13 24  4
 11 |  7  2  2  7  3  1  1  2  4  1  4  5  3  1  8  9 11 24  6  5  8  4  6  1
 12 |  0  2  5 10  8  8  9  6  5  1  2  3  2 10  0  0  8  3  9 10  8 11  7  8
 13 |  9  3 13  7  3  5  5  4  4  6  5  4  3  3  3  3  5 16 15  8  9  2  7  7
 14 | 17 19  8  5  6  4  4  4  7  2  1  2  2 11  5  6 11  3  1  4  4  5  6  5
 15 |  3  0  0  4  9  6  2  5  3  1  4  8  3  1  2 12 12 11 12  6  8  3  7  8
 16 |  4  4  7  7  7  6  5  2  6  7  8  2  3  5  3  6 12 15 15  7  5  0  1  1
 17 |  0  1  0  0  4  4  6  4  4  5  4  2  5  5 13  9 13  7  6  9  3  9  5  2
 18 |  3  3  0  2  5 14  5  3  6  2  4  6  4  4  3  4  5  6 10  8  6  6 10 10
 19 |  8  9  6  3 12 14  3  3 11  8  3  2  6  5  6  5 14  8 14 10 10  1  0  0
 20 |  1  2  1  0  1  0  0  0  1  0  0  1  2  3  0  0  2 13 15  9  5  3  4  7
 21 |  4 10  8  6  5  4  1  3  4  3  3  1  7  3  7  2 14 12 14  7  3  6  5  9
 22 |  2  0 12  2  6  3  9  6  8  1  3  2  4  4  3  1  5  2  5  6  8  8  2  4
 23 |  8  3  6  6  7  8  1 11  7  5 12  4  4  6  3  4 22 22 12 20 10  6  6 12
 24 |  3  2  7  5  0  3  8  3  6  2 10  9  3  3  7  8 14  7  2  5  1  0  1  0
 25 |  2  3  5  4  4  5  3  6  1  2  6  7  7  0  2  0 11  5  4  3  5  6  0  1
 26 |  2 10  7 15  9 14  6  4  7  7  1  5  2  3  0  1 12 13 20  8  0  1  6  9
 27 |  8  5 10  7  4  3  3  3  8  5  5  4  5  4  8 10  7 20 17  9  3  6  9 11
 28 |  7  4 10  2  7  3  5  1  6  3  0  6  3  6  3 10 13 16 12 10  8 14  6 15
 29 | 13 12 17  7  4  1  1  0  5  3  4  6  5  5  8 12 26 16  6 12  7  3 13 14
----+------------------------------------------------------------------------
2000|  0h 1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
 Mar| UT

        Signal duration distribution for the above period

                Duration (s)      Number
                < 0.1              1335
                  0.1 to  0.3      1016
                  0.3 to  1         845
                  1   to  3         700
                  3   to 10         285
                 10   to 30          10
                      >  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
Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Apr|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 |37 39 38 45 44 35 37 27  n  n  n  n  n  n  n  n  n  n  n  n  n  n  e  e
 2 |26 29 40 38 36 25 29 24@23  n --@16 10@12  n  9  3  5  7 13 21 24 28 35
 3 | n 25 32 38 36 27 42@32 -- 26 23  n  n  n  n  n  n  2  6  e 13 28 17 22
 4 |40 29 47 37 35 45 34 55  n 14  n  7  8  7  7  8  3  6  6 13  9  e  e  e
 5 |20 38 34 33 30 44 44 44@33 33 24 26 19 17 17 21 10  5 10 13  9 22 25 20
 6 |28 29 35 47 36 25 14  n  n  n  n  n  n  n  n  n  n  n  n  7  7 30 28 29
 7 @33 25 48 42 46 36 35 63@36 26 23@32  n@10  3  6  4  8  6  9 15 28 22 32
 8 |28 37 38 39 40 47 55 38@18  n  n  n  n  n  n  n  n  n  n  5 11  e  e  e
 9 | e 51 40 45 35 31 45 41@36 27 23 16 13 18  8  8  5  3  2 10 18 22 17 23
10 |27 30 28 37 40 32 36 31@30 38 23 24 24 24@20 11 11  6  7  9 17 27 34  e
11 | e 35 25 27 37  n  n  n  n  n  n  n  n  n  n  n  n  n  n  1 12 21 16 24
12 |41 42 37 35 56 44 59 34@25  n  n 11 @8  n  n  n  n  n  8  7 14 21  e  e
13 | e  e 30 39 29 41 58 55@33  n  n  n  n  n  n  n  n  n  4  2 13@21@26 14
14 | e  e@51 42 52 49 47 36@34 27 25 13 20 10 11 12  6  7  6  7 10 15 18 19
15 |30@30 38 30 36 35 41 47@32 28 17 27 24 19  7  7 -- 14  7  9 14 24  e  e
16 | e  e 36 49 27 47 43 46@45 32  n 16@13  n  n  n  n  n  n  5  9 18 41 31
17 |38 27 34 32 32 45 45 24  n  n  n  n  n  n  n  n  n  3  4 15 14 32 45 37
18 | e@45 38 38 51 41 38 24  n  n  n  n  n  n  n  n  9  5 17 10 14@18  e  e
19 | e  e  e 34 29 37 52 49@36 25 17  8  7 16  6 12  7  7 10  9 19 24 19 22
20 |22 37 42 30 24 42 58 49@54 45 22 29 26 26  7  5  1  6  2  6 19 23 37 41
21 |38 43 40 31 39 56 44 43@48 31 22 14 19@27  n @6  n  n  e  8 17 34@40  n
22 | e 45 60 32 60 65 56  n  n 27@13@12 14 12  n  n  3  4  8  9 10 17 22 19
23 |25@31 29 40 42 50 35 39@10 18  7  n  n  n  n  n  n  n  n  6  4 14  e  e
24 | n 21 41@25 35 42 30 26@19 17  n @8 12 17 20 15  8  7 13 12 12 19 29 23
25 |26 33 34@39@33@35@42 25@33  n  n  n  n  n  n  n  n  n  n  7 22  n  n  n
26 | e@26 44 38 33 32 46 44@47 36 30 23 32 23 14 16 11  n  4  8 13@10  e  e
27 | e  e 30 28 34 31 50 47@30 26 19 15  8 12@17  n  9  7  7  7 11 16 23 29
28 @19 31@36@42 34 48@39@21@14 17  n  n  n  n  n  n  e  e  3 12 11 19 35 22
29 |20 45 19 21 18 32 39 24  n  n  n  n  n  n@18  n @7  1  7  3 20 25 34 34
30 |33 36 37 34@38@38 37 50 20 17  n 10 18  n  n  n  e  e  4  8 11 27 34 25
---+-------------------------------------------------------------------------
Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14UT
Apr|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
Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Apr|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 | 1  2  1     4  3  2  1
 2 |    1  3  4  2  2  4  3  2                                   1        1
 3 |       2  2  2  2  4  1        2                                   1
 4 | 1     2  1     1  1
 5 |          2  1     1  3  2  1  2           1     1              1
 6 |       2  3     5  2
 7 | 1  1  1  1  3  2  3  2  1     1                                1
 8 | 2  2           5  3  2  1
 9 |    4  1  3  1  1  3  2  1     2  1              1              2     1
10 | 2  2  2     2  1     1     3  1     1                          1  1
11 |    2  1     3
12 | 2  1  1  1  1  1  4  1
13 |             1     6  5  1                                   1
14 |       4  2  4     3  2  1  6  1  2  2     1                          1
15 | 1     2  1     4  4  4     1                                   6  1
16 |       1  1  5  2  4  1  3  1                                      1
17 |             1  8  3                                               1  1
18 |    1  2  3  2  2  1  2
19 |             3     4  3  3  2  1                    1           1     1
20 |    1  2     1  1  2  1  2  3        2                             3  2
21 |       3  3  1  8  3  3     2     1  1  1                          1
22 |    6  5  2  9 11 10        3                                   1  1  1
23 | 2  2  3  8  5 10  9  3  1
24 |    1  5     5  4  4  3              1                                1
25 | 1  1     1  1  1  1  2  4
26 |       4  1  2  1  3  1  5  2  3  2  3     2
27 |    1     3        7  3  1  2
28 |    1     6  2  5  1     1  4  1  1                       1        1
29 |    1  1  2     2  3  2                    1
30 |    3  2  2     1     5     1        1        1                       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 14UT
Apr|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
Apr    1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16
--------------------------------------------------------------------
Count  0   1   2   0   1   1   1   2   1   1   0   2   2   5   1   0

Apr   17  18  19  20  21  22  23  24  25  26  27  28  29  30
------------------------------------------------------------
Count  1   0   1   0   4  10  12   1   2   4   5   4   1   1

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 = local time = JST = UT + 9 hours


      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 1650 km
Antenna:     4-element horizontal Yagi, geographical azimuth 195 degrees
(SSW),
             elevation 15 degrees
Receiver:    Yupiteru MVT-9000 in FM mode; sensitivity 0.5 uV at 12 dB S/N
Observing:   audio signal from ear-phone socket was rectified, digitized
             and fed into a PC via the parallel computer port. HP VEE was used
             to process the digitized signal and to store 15-minutes counts of
             reflections stronger than 0.06uV.

                   Sporadics in January - April 2000

        Uncorrected hourly counts for signals stronger than 0.06 uV

     | 29  30  31   1   4   5   6  19  20  26  27  19  20   7   8   9  21  22
  UT |Jan Jan Jan Feb Feb Feb Feb Feb Feb Feb Feb Mar Mar Apr Apr Apr Apr Apr
 ----+-----------------------------------------------------------------------
  00h|  -  73 100  86   -  52  43   -  99   -  96   -  93   - 102  86   - 132
  01 |  - 108 111  94   -  71  58   - 126   - 141   -  71   - 134 133   - 125
  02 |  - 146 140 113   -  92  91   - 161   - 170   -  74   - 158 119   - 139
  03 |  - 184 138 125   - 118  93   - 187   - 218   - 113   - 147 152   - 110
  04 |  - 166 199 134   - 129 128   - 198   - 230   - 105   - 165 173   - 171
  05 |  - 155 113 137   -  90 124   - 170   - 158   -  88   - 144 168   - 125
  06 |  - 115 130 137   -  85  76   - 139   - 176   -  71   - 179 178   - 176
  07 |  - 125  97 169   -  94  91   - 128   - 145   -  94   - 119 187   - 144
  08 |  - 130 120 311   -  84 121   - 114   - 169   - 141   - 155 259   - 111
  09 |  - 133 130 139   -  78 115   - 180   - 166   - 157   - 157 220   -   -
  10 |  - 113  96 112   -  76 118   - 147   -   -   - 172   - 193 180   -   -
  11 |  - 110 100 128   -  79  86   - 141   -   -   - 122   - 160 127   -   -
  12 |  -  67  94 119   -  73  76   - 115   -   -  96 137   - 151 156   -   -
  13 |  -  64  58  85   -  50  76   - 122   -  82  99 116   - 153 148   -   -
  14 |  -   -  53  79   -  44  48   -  74 105  90  63  75   - 145 160   -   -
  15 |  -   -  33  84   -  31  69   -  60  73  88  62 114   - 109 102   -   -
  16 |  -  41  58  65   -  45  69  35  58  50  54  44  66   -  58  70   -   -
  17 |  -  19  39  87   -  27  50  51  22  64  44  29  98   -  49  60  20   -
  18 |  -  23  27  41   -  55  17  41   -   -   -  30  29   -  51  36  16   -
  19 |  -  19   -  54   -   -  27  53   -   -   -  27 100   -  37  36  28   -
  20 |  -  54   -   -   -   -  31  62   -  49   -  45   -  42  61   -  28   -
  21 |  -  63   -   -   -  31   -  67   -  74   - 108   -  66  50   -  43   -
  22 | 63  84  63   -  32  49   -  85   -  86   -  70   -  76  77   -  66   -
  23 | 62  98  40   -  53  41   - 103   - 116   -  47   -  92  87   -  99   -
 ----+-----------------------------------------------------------------------
     | 29  30  31  01  04  05  06  19  20  26  27  19  20  07  08  09  21  22
  UT |Jan Jan Jan Feb Feb Feb Feb Feb Feb Feb Feb Mar Mar Apr Apr Apr Apr Apr


      Ton Schoenmaker

---------------------------------------------------------------------------
Observer:    Pierre Terrier
Location:    Canet, France  (3 36'E, 43 41' N)
Frequencies: 93.8 MHz
Transmitter Location:
             93.8 France Musique  Eyne (66)         public service
             93.8 France Musique  Osseja (66)       public service
             93.8 France Culture  Port Vendres (66) public service
             93.8 France Musique  Font-Romeu (66)   public service
             93.8 BFM             Marseille (13)
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 test version processes the signal and records on
             hard disk the time of the events. 
             METEOR parameters: THRESHOLD = 16


    |   Apr 2000
 UT |  1    2    3    4    5    6    7    8    9   10   11   12   13   14   15
 ---+-------------------------------------------------------------------------
  0h| 16   12   17   11    4    7    5    1    4   17   15    6    5    9   14
  1 | 19   10   24   16    4    4    6    6    7   17   11    6    5    3    6
  2 | 11   13   10   13    4    3    2    7    7   15   18   11   10    1    7
  3 | 11    9    7    5    6    7    5    1    7   19   23   12   10   11    9
  4 | 18   14   11    6    6    7    2    8    6   15   21   13    9    7   13
  5 | 23    7   14   12   13    7    4    7    6    9   17    7   11    8    4
  6 | 19    8   17   17   10   15    6    8   12   12   17   10   10   12    9
  7 | 20    9   20   11   30   13    6   37   10   11   19    6   16   10   18
  8 | 30   22   17    8   26   18    5    9    8   21   11   10   16   12   20
  9 | 31   11    8   11   10   12   15    1   21   13   10   17   15    9   14
 10 | 32   13   10   20    6   11   16   10    9   19   16    8   14    5   13
 11 | 20    9   13    9    9   18   17    6    7   13    9   10   12    7   12
 12 |  9    7   14   12   12    7   10    2   12   12    8    9   11    7   10
 13 | 12    5   18    4    6    7   10    1    9    8   16    9   13    7   13
 14 | 14    8   12    2    4    4    8    3   11    8   12   10   10   11    2
 15 |  1    8   48   19    5    1   10    3    3    6    4    7   10    6    5
 16 |  5    4    4    5    1    5    1    5    4    2    4    6    7    3    2
 17 |  8    8    4    4    1    5    3    4    3    1    2    1    0    2    5
 18 |  8    6    3    2    5   21    3    3    5    2    3    2    3    0    2
 19 | 10    3    8    6    4    1    4    2    1    5    4    3    3    5    1
 20 | 10    5    4    6    1    1    2    2    3    8   10    3    6    2    0
 21 |  7   15   16    1    2    3    3    3   18    4   10    3    7    4    2
 22 |  6    9   11    1    1    2    5    1   10   14    6    6    9    7    4
 23 |  7   13   13    2    3    5    5    2   11    4    9    5    6    5    0
 ---+-------------------------------------------------------------------------
 UT |  1    2    3    4    5    6    7    8    9   10   11   12   13   14   15
    |   Apr 2000

    |   Apr 2000
 UT | 16   17   18   19   20   21   22   23   24   25   26   27   28   29   30
 ---+-------------------------------------------------------------------------
  0 |  5    7    7    9    8    7    9    8   15    9    7    2    6    9    4
  1 |  6   15   11    6    2   11    7    3   13    8    6    5   11    6    6
  2 |  2   13   16    6    3    9    4    8   23    4   14    2    8    8    9
  3 |  4   17   13    8    5   17    5    8   17    4    2    0   10   10   18
  4 |  3   25   15    6    2   12    3   19   17   20    8    3   12    9   10
  5 |  7   14   13   11    4   10    4   13   18    5   11    9   16   17   14
  6 |  9   20   11   18    3    7   11   22   13    9   16   18   21   15   14
  7 | 11   22   15   20   10    6   12   17   25    7    9    8   17   17   16
  8 |  2   23   19   19   13    7   14    9   18   13   12   15   12   13   16
  9 |  7   19   10    8   18    6   11   16   20   12   12   13   21   13   21
 10 |  9   28   12   20   15   19    5    9   16   12    8   10   17   15    9
 11 | 11   21   22   13   11   13   12    7   12   13    5   10   14   10    6
 12 |  4   18   22    9    9    5    7   10   14   20    7   11   14   11    7
 13 |  3   13   42    9    5    9    3   12   10   10    6    6   11   16    6
 14 |  2   10    9    7   10    4    4    7    8    6    5    3   14    5   10
 15 |  5    6    6    7   10    4    1    2    8    9    3    5    8    7    7
 16 |  3    2    6    8    6   24    3    3    2    2    3    3    7    1    6
 17 |  8    5    4    2    2   11    0    2    3    2    2    6   10    1   13
 18 |  3    1    3    3    3    6    0    4    4    2    2    7    1    1   12
 19 |  7    4    5    5    3    1    2    3   14    1    0    4    7    3   18
 20 |  6    4    4    3    4    3    8   14    3    2    4    5    9    5   15
 21 |  6    2    4    4    3    6    4   14    9    8    1    4    6    1   27
 22 | 10    8    9    3    6    2    5   12   16    5    3    9    5    3   23
 23 |  5   12    8    7    4    9    7   14    9    7    3    4    5    5   13
 ---+-------------------------------------------------------------------------
 UT | 16   17   18   19   20   21   22   23   24   25   26   27   28   29   30
    |   Apr 2000


      Pierre Terrier

---------------------------------------------------------------------------
Observer:    Garfield Tsao  (BM2EQB)
Location:    LonTan Observatory
             LonTan, TauYan, Taiwan R.O.C. (121 14'37" E, 24 52'54" N by GPS)
Frequency:   50.0169 MHz USB mode 3 kHz width.
Antenna:     Comet made 50 MHz Yagi HB 4 element (gain 10.3 dBi)
             astronomical azimuth 225 deg (=NE), elevation 7 deg.
Transmitter: MIYAZAKI University Japan, USB mode, 50 W (24 hours),
             distance about 1125 km from Lon Tan.
Receiver:    Icon PCR-1000 computer controlled all band receiver
Sensitivity: 0.25 uV for 10 dB S/N  for USB mode
Observing method: the beacon 880 Hz voice signal (by FFTDSP) is
            received by a low frequency filter (880 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.


                         April 2000: Lyrids

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
 Apr|16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
----+-------------------------------------------------------------------------
 21 | -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  E
 22 |27 43 48 64 50 56 71101 91 60 58 44 28 35 33 36 19 24 29 38 43 53 62  E
 23 |50 49 69 61 66 80 91 84 81 54 53 50 29 25  -  -  -  -  -  -  -  -  -  -


Notes:
 . "E" symbol means weak E layer
 . "N" symbol means background noise affected the normal echoes


       Garfield Tsao

---------------------------------------------------------------------------
Observer:  Ilkka Yrjola
Location:  Finland  (26 35' E, 60 54' N)
Frequency: 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).


                  Lyrids 2000

  Meteor counts in one hour intervals starting at:

    UT  |  21 Apr  22 Apr   23 Apr   24 Apr
    ----+----------------------------------
     0h |    177      403      189      128
     1  |    211      298      230      172
     2  |    201      375      220      172
     3  |    218      341      241      179
     4  |    231      398      274      129
     5  |    304      453      274      230
     6  |    308      458      247      304
     7  |    426      475      257      348
     8  |    338      478      290      315
     9  |    300      379      270      306
    10  |    290      454      258      267
    11  |    259      231      192      236
    12  |    204      244      231
    13  |    204      179      146
    14  |    148      129       75
    15  |    128      131       80       90
    16  |    127      111       76      122
    17  |    230      104       80      125
    18  |    273      120       38      192
    19  |    185      115       48      153
    20  |    209      116       64      211
    21  |    307      159      121      151
    22  |    349      164      143      158
    23  |    508      184      144      143
    ----+----------------------------------
    UT  |  21 Apr  22 Apr   23 Apr   24 Apr


Note: Aurora on April 24, 12h-15h UT


      Ilkka Yrjola


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  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.dal.ca

Maurice De Meyere (ON4NU)
Hullekensstraat 24, B-9831 Deurle, Belgium
tel: +32 (9) 282 35 26
E-mail: maurice.demeyere@planetinternet.be

Didier Favre
Association Astronomie Tycho Brahe & Club d'astronomie Thorens-d'Etoiles
Annecy, France
E-mail: tbrahe@cybercable.tm.fr
http://www.astroclub.net/tychobrahe
http://favre.didier.free.fr/indexie.htm

Ghent University, Astronomical Observatory
Krijgslaan 281(S9), B-9000 Gent, Belgium
E-mail contact: Paul@izar.rug.ac.be, Pierre.DeGroote@rug.ac.be

Rafael Haag
Porto Alegre, Brazil
E-mail: haag@portoweb.com.br

Werfried Kuneth
Ferndorf, Austria
E-mail: ku@aon.at
http://www.qsl.net/oe8fnk

Alastair McBeath
IMO: International Meteor Organization
12A Prior's Walk, Morpeth, Northumberland, NE61 2RF, England, U.K.
E-mail: vice_president@imo.net

John R. Meyer
Van Andel Creation  Research Center, Chino Valley, AZ. USA
E-mail: crsvarc@primenet.com

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@vvs.be
Compuserve: 72650,3513

Sadao Okamoto
E-mail: okamoto@jim.sugiyama-u.ac.jp

Ton Schoenmaker, Dutch Meteor Society
Meester Homanstraat 8, NL-9301 HP Roden, Netherlands
E-mail: schoenmaker@NFRA.nl
Call: PA0EFA

Pierre Terrier
Canet (close to Montpellier), France
E-mail: pierre.terrier@wanadoo.fr
http://members.tripod.com/~astro_electronic/index.html

Garfield Tsao (BM2EQB)
LonTan Observatory, LonTan, TauYan, Taiwan
E-mail: tsao5916@ms17.hinet.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
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                (RMOB0004)               8 May 2000
--


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