Radio Meteor Observation in Japan No.234 April 2021 - English : https://www.iprmo.org - Japanese: https://www.amro-net.jp ----------------------------------------------------------------------------- Observer : Kenji Fujito Location : Yokkaichi, Mie, Japan (34.96 N, 136.61 E) Frequency: 53.755 MHz Transmitter Location: Fukui Prefectural University at Eiheiji town (136.3 E, 36.1 N) HAM beacon (JH9YYA) for RMO (50 W CW, 53.755 MHz) No modulation except for identification Antenna : 2el. Comet HB9CV, zenith Receiver: ITEC HRO-RX1a Method : by using HROFFT software (by Kazuhiko Ohkawa), manual count using HROview and HROreport (by Michinari 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 ---+------------------------------------------------------------------------ 01 | 12 10 19 12 9 17 14 16 9 18 18 15 9 6 3 4 0 2 1 6 3 6 3 1 02 | 7 13 16 14 17 6 11 13 11 11 14 9 9 11 2 3 2 2 0 2 1 3 3 5 03 | 13 12 12 10 11 2 9 4 14 5 6 5 7 1 4 2 2 1 0 0 0 3 3 6 04 | 6 5 13 13 8 7 9 7 11 6 7 5 8 13 5 5 2 4 2 1 2 2 9 9 05 | 9 27 11 18 12 11 29 20 26 14 16 16 16 10 12 6 3 3 8 7 6 5 16 12 06 | 15 21 17 11 16 20 24 23 25 23 13 21 19 15 10 3 5 2 0 5 5 4 9 9 07 | 15 14 21 14 9 19 22 26 22 16 21 17 11 14 3 3 1 1 4 4 6 14 14 16 08 | 22 17 9 17 18 15 17 24 8 24 16 16 9 3 9 1 1 1 2 4 5 9 5 9 09 | 21 22 25 19 21 15 13 16 16 17 13 12 11 7 4 1 2 2 3 6 7 2 13 9 10 | 14 14 25 16 20 18 22 14 28 21 17 13 15 6 1 1 1 3 1 2 8 6 4 20 11 | 12 18 22 18 16 17 29 15 20 28 17 17 15 17 3 3 3 3 0 2 6 5 8 10 12 | 15 23 21 19 23 17 15 22 14 22 20 11 12 5 7 1 2 1 4 2 1 2 4 8 13 | 7 17 13 9 13 9 6 9 6 12 11 11 10 6 5 1 3 3 0 1 1 5 3 7 14 | 11 7 13 11 9 8 8 18 21 17 17 19 9 5 5 4 3 2 4 3 7 13 18 12 15 | 17 15 18 18 17 23 17 21 21 20 10 6 7 4 3 6 4 2 1 0 3 11 12 11 16 | 17 17 22 16 12 19 11 21 16 19 20 17 18 12 5 6 6 5 5 5 9 5 13 14 17 | 26 19 22 16 20 26 17 20 15 24 35 19 16 18 9 11 5 7 2 3 2 7 7 21 18 | 15 32 21 19 24 22 19 25 19 22 22 24 17 15 11 2 6 6 5 5 6 17 18 23 19 | 22 14 19 27 20 17 22 27 20 18 19 21 17 7 5 5 3 6 4 8 7 9 12 15 20 | 19 13 21 16 18 14 29 23 13 17 21 8 8 6 4 3 3 3 3 4 2 5 6 6 21 | 8 9 5 15 17 18 15 15 10 9 6 6 6 4 1 0 1 1 1 4 6 4 9 7 22 | 11 14 16 14 10 19 18 17 20 15 6 12 9 5 8 7 2 3 4 3 3 5 7 7 23 | 7 6 18 12 15 12 10 14 15 10 7 7 8 12 10 3 4 3 2 1 4 7 6 9 24 | 15 9 10 17 14 17 12 11 13 8 8 17 9 9 10 4 10 4 3 3 4 6 5 12 25 | 8 10 11 10 15 13 15 17 15 15 15 7 6 10 6 1 3 2 5 2 10 6 10 4 26 | 10 14 16 16 19 31 18 20 18 15 9 12 22 6 9 4 1 3 4 0 12 12 13 22 27 | 13 29 20 24 24 33 25 23 29 23 15 13 12 7 7 3 4 1 1 5 3 7 3 10 28 | 7 15 12 16 20 17 8 27 18 17 19 12 11 12 9 4 3 2 1 1 7 6 5 11 29 | 1 13 8 9 17 8 14 21 15 15 19 14 6 6 11 4 4 0 0 2 8 4 4 5 30 | 22 14 14 16 17 19 18 20 23 19 20 14 5 2 7 3 3 3 6 3 4 2 10 3 ---+------------------------------------------------------------------------ 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 ---+------------------------------------------------------------------------ 01 | 02 | 03 | 04 | 05 | 06 | 1 07 | 1 08 | 09 | 1 10 | 1 1 11 | 1 12 | 13 | 1 14 | 1 15 | 16 | 17 | 1 1 18 | 1 19 | 1 1 1 20 | 1 21 | 1 1 22 | 1 1 1 1 2 1 23 | 1 1 1 24 | 1 1 25 | 1 26 | 1 1 1 27 | 28 | 1 29 | 30 | 1 ---+------------------------------------------------------------------------ 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 note: --: lost counts because of high noise level or machine failure. %: Hourly rate estimated by effective observation time less than 60 min. NS: something noise IF: Contamination due to radio noise or interference Es: Contamination due to sporadic E opening JST =UT + 9 h ----------------------------------------------------------------------------- Observer : Tuboi Observatory[TSUBOI MASAKI] Location : Asakitaku,Hiroshimashi,JAPAN (34.45 N, 132.50 E) Frequency: 53.755 MHz Transmitter Location: Fukui Prefectural University at Eiheiji town (136.3 E, 36.1 N) HAM beacon (JH9YYA) for RMO (50 W CW, 53.755 MHz) No modulation except for identification Antenna : 5.6m loop antenna (original) dir: zenith Receiver: AITEC MRX-50(53.75MHz) Method : by using HROFFT software (by Kazuhiko Ohkawa), manual count using HROview and HROreport (by Michinari 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 ---+------------------------------------------------------------------------ 01 | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 02 | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 03 | -- -- -- -- -- -- -- -- -- -- -- -- %5 4 6 6 5 2 6 4 11 11 10 16 04 | 19 19 22 16 19 17 16 12 20 16 21 19 18 11 24 8 9 5 1 4 6 7 18 26 05 | 10 17 24 10 18 14 15 10 20 7 7 11 14 4 2 3 IF IF 2 4 4 4 2 1 06 | 7 2 1 2 5 4 3 11 16 9 16 8 5 10 5 6 7 4 2 1 1 3 4 5 07 | 10 9 12 7 8 15 6 13 18 13 9 7 12 6 5 1 1 5 2 4 1 4 9 10 08 | 9 4 4 7 7 10 16 20 18 15 10 10 10 9 2 6 1 2 0 1 3 3 4 6 09 | 6 3 6 2 9 7 6 15 18 13 9 5 7 5 6 4 2 1 3 3 0 0 0 1 10 | 6%12 IF IF IF IF 6 10 22 20 10 10 9 6 3 3 4 4 6 2 2 2 3 1 11 | 0 5 5 1 5 0 7 11 19 9 10 12 4 5 10 4 1 5 %7 %4 2 3 5 5 12 | 8 11 5 7 6 8 7 20 22 17 16 11 15 16 8 17 8 5 4 6 7 3 15 9 13 | 10 14 20 16 10 19 17 12 16 15 20 14 14 8 12 9 7 5 5 4 9 11 11 8 14 | 11 17 22 20 11 20 20 11 11 13 13 12 7 8 12 11 5 3 7 IF 1 2 2 4 15 | 6 3 4 5 2 5 13 11 11 17 11 5 8 3 6 7 3 1 2 4 3 8 5 6 16 | 4 10 8 18 7 5 14 16 14 15 7 4 5 5 8 6 2 5 6 2 5 8 11 15 17 | 19 13 21 18 13 17 16 22 18 16 19 14 20 20 17 10 4 5 5 6 2 8 16 17 18 | 17 17 17 25 20 12 19 29 19 22 12 13 18 13 12 9 7 7 9 9 2 1 1 7 19 | 4 6 8 6 8 8 19 14 25 23 16 28 15 9 14 9 9 3 3 7 8 9 10 14 20 | 19 9 19 12 15 24 21 16 21 14 19 11 15 9 5 3 2 2 6 4 4 4 3 4 21 | 6 7 11 3 7 6 11 12 13 14 10 10 8 4 4 8 3 1 0 1 2 0 3 2 22 | 5 9 7 8 6 8 12 11 14 13 14 10 5 %5%11 6 3 1 3 3 4 6 6 15 23 | 14 6 18 6 13 12 15 18 9 16 9 9 5 3 11 5 8 4 1 5 8 8 19 14 24 | 27 14 15 13 21 21 15 23 30 22 25 13 9 16 10 7 7 4 2 2 2 4 11 13 25 | 20 14 13 21 20 21 19 15 16 11 8 9 5 6 3 5 2 4 3 1 3 4 7 6 26 | 16 10 9 10 15 23 23 28 16 16 12 9 5 5 8 2 2 5 2 2 5 8 5 8 27 | 3 14 8 6 12 18 15 20 29 15 13 22 16 14 11 7 5 10 7 5 6 12 6 11 28 | 10 13 14 15 19 8 17 26 18 16 31 20 25 19 17 9 14 2 4 5 6 10 15 19 29 | 15 15 16 16 36 25 28 26 28 24 27 24 23 22 19 6 15 6 3 4 7 7 8 10 30 | 12 15 15 12 17 23 20 22 17 13 12 9 15 7 %8 IF IF IF 2 1 4 2 11 5 ---+------------------------------------------------------------------------ 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 ---+------------------------------------------------------------------------ 01 | 02 | 03 | 1 04 | 1 05 | 1 06 | 1 1 1 07 | 1 1 08 | 1 09 | 2 10 | 1 11 | 12 | 13 | 1 1 14 | 15 | 16 | 17 | 1 1 18 | 1 19 | 1 20 | 1 1 1 21 | 1 22 | 2 1 3 1 1 23 | 1 1 24 | 1 25 | 1 26 | 27 | 1 2 1 28 | 1 1 1 29 | 1 30 | 1 ---+------------------------------------------------------------------------ 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 Frequency: 92.8 MHz Transmitter Location: FM-broadcast at Kagoshima, Japan Antenna : 5el-Yagi Az90deg Receiver: R820T2-SDR+TCXO SDRRadio Method : by using HROFFT software (by Kazuhiko Ohkawa), manual count using HROview and HROreport (by Michinari 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 ---+------------------------------------------------------------------------ 01 | 41 59 58 68 51 52 49 45 35 32 34 40 35 39 40 17 21 8 16 4 11 14 22 23 02 | 30 36 38 32 28 20 38 88 88 83 75 70 41 71 38 29%22%18 12 7 14 16 14 23 03 | 49 59 54 63 38 49 31 34 40%28%55 --%42 41 32 36 23 14 8 18 11 12 27 27 04 | 33 37 55 IF 36 25 25%23 18 26 30 40 47 51 38 30 12 13 11 5 13 13 21 25 05 | 32 55 53 43 41 33 36 16 25 19 32 40 33 26 24 19 12 4 7 8 14 9 9 9 06 | 16 18 21 17 19 24 33 28 32 36 36 35 32 33 37 34 14 17 6 2 5 3 7 8 07 | 7 20 17 28 21 26 24 29 27 25 41 31 47 39 24 17 8 6 5 5 8 7 8 14 08 | 17 17 19 19 27 23 22 27 30 28 36 22 32 38 28 21 19 11 10 2 7 3 6 6 09 | 14 21 13 21 18 12 22 35 26 25 32 38 41 41 34 26 9 10 10 4 6 3 8 7 10 | 12 17 12 15 14 8 33 29 34 31 28 40 43 33 20 29 23 20 8 8 3 7 1 7 11 | 13 10 14 17 9 9 12 25 20 26 30 33 31 43 23 36 20 9 8 1 5 6 6 12 12 | 16 9 18 23 20 15 18 23 34 43 36 31 47 51 45 21 31 13 10 7 14 13 14 18 13 | 41 38 50 42 35 34 18 36 26 29 28 37 45 56 42 27 24 17 6 8 9 14 18 22 14 | 42 51 62 63 35 31 20 29 24 23 37 36 34 43 35 39 19 14 11 7 14 5 5 13 15 | 15 23 24 19 24 21 18 21 27 18 17 35 32 36 38 26 20 15 10 11 11 16 17 19 16 | 30 28 34 33 23 32 29 19 25 26 31 25 50%50%29%32 21 6 8 10 9 10 13 35 17 | 37 54 68 58 49 47 32 29 25 21 31 37 51 44 24 35 18 13 19 12 9 11 21 27 18 | 43 58 57 66 51 56 46 37 28 31 29 43 35 44 37 32 24 19 12 14 8 8 6 8 19 | 13 21 17 21 15 21 33 35 32 34 30 45 37 32 40 34 28 22 10 11 15 12 9 27 20 | 50 51 52 47 42 39 30 28 31 25 22 26 47 47 34 27 24 17 11 6 4 4 9 10 21 | 16 24 17 19 13 15 26 33 32 32 30 46 33 34 27 21 12 10 8 6 5 6 9 10 22 | 19 26 27 26 22 20 45 36 39 36 28 23 26 58 41 29 16 13 11 7 14 15 19 13 23 | 65 80 74 62 53 66 43 43 29 46 29 30 22 28 32 20 19 11 11 21 14 12 19 38 24 | 40 62 79 64 52 49 44 44 32 38 37 51 32 44 41 31 28 11 10 11 7 10 5 25 25 | 20 39 28 59 56 30 50 29 36 34 28 20 28 35 36 16 16 20 7 7 8 6 13 16 26 | 14 22 29 29 22 43 50 44 29 25 22 33 38 44 36 37 19 10 11 11 5 8 7 22 27 | 22 30 35 34 32 46 37 52 42 41 57 47 36 58 67 41 25 22 12 10 12 17 26 34 28 | 59 49 57 57 56 54 35 32%20 IF 58 45 54 55 38 31 26 17 11 13 17 15 20 42 29 | 46 70 59 58 65 41 46 37 33 42 39 42 49 64 40 35 24 12 8 15 14 10 14 31 30 | 37 43 49 51 37 45 31 34 32 25 40 49 41 48 36 18 21 17 7 6 8 10 25 29 ---+------------------------------------------------------------------------ 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 ---+------------------------------------------------------------------------ 01 | 1 1 1 3 1 02 | 1 2 03 | 1 1 1 1 04 | 1 1 1 1 05 | 1 1 1 2 1 1 1 06 | 1 2 1 2 1 07 | 1 1 1 1 1 08 | 1 1 09 | 1 2 10 | 1 1 1 2 1 1 1 11 | 1 1 1 1 12 | 2 1 3 4 1 13 | 4 2 2 4 1 1 1 1 1 14 | 1 2 15 | 1 1 1 1 2 16 | 1 1 2 1 17 | 1 2 1 18 | 1 1 2 2 1 1 19 | 1 1 1 2 2 1 20 | 1 3 3 1 2 21 | 1 1 6 4 5 1 22 | 1 1 1 1 4 2 3 1 1 1 23 | 3 1 1 2 4 9 5 3 1 3 1 1 1 2 24 | 1 1 1 4 4 2 2 3 1 1 1 25 | 2 2 1 1 1 26 | 1 3 1 2 1 2 27 | 1 1 2 3 1 2 2 1 1 28 | 1 3 4 1 1 1 1 2 29 | 1 1 2 1 3 1 30 | 3 3 2 2 1 1 1 1 ---+------------------------------------------------------------------------ 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 note: --: lost counts because of high noise level or machine failure. %: Hourly rate estimated by effective observation time less than 60 min. NS: something noise IF: Contamination due to radio noise or interference Es: Contamination due to sporadic E opening JST =UT + 9 h ----------------------------------------------------------------------------- Observer :Hirofumi Sugimoto Location : Hachioji, Tokyo, Japan (35.654 N, 139.319 E) Frequency: 53.755 MHz Transmitter Location: Fukui Prefectural University at Eiheiji town (136.3 E, 36.1 N) HAM beacon (JH9YYA) for RMO (50 W CW, 53.755 MHz) No modulation except for identification Antenna : HB9CV 2el. zenith(el.S-N) Receiver: AITEC MRX-50 Method : by using HROFFT software (by Kazuhiko Ohkawa), manual count using HROview and HROreport (by Michinari 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 ---+------------------------------------------------------------------------ 01 | 4 6 7 11 16 10 15 19 9 15 11 11 8 8 6 2 5 2 5 6 8 8 8 10 02 | 16 10 14 10 17 13 13 13 16 16 10 10 11 11 9 5 1 3 2 2 3 6 2 15 03 | 11 12 7 11 6 6 14 12 24 12 13 17 9 8 3 4 7 5 4 7 4 5 7 17 04 | 9 3 12 17 10 12 14 12 12 11 14 10 9 12 6 3 5 3 1 2 5 9 11 9 05 | 15 13 8 13 13 12 11 8 5 19 14 7 5 11 7 6 5 1 0 4 4 5 7 8 06 | 13 12 4 4 15 15 12 12 9 12 17 17 7 7 7 8 1 0 6 2 6 5 7 11 07 | 16 13 19 6 10 17 13 11 16 13 11 12 11 12 4 1 0 3 4 2 6 10 12 18 08 | 8 8 7 16 17 9 15 21 14 13 14 11 6 10 7 6 2 2 6 3 5 7 8 15 09 | 6 11 10 9 13 12 15 9 16 11 15 11 5 9 5 5 4 6 3 7 7 9 10 5 10 | 6 11 15 10 21 14 12 12 15 12 11 15 8 4 8 5 5 4 2 4 8 9 9 12 11 | 17 19 16 10 14 15 5 17 19 13 17 13 7 11 12 8 1 8 1 2 6 6 6 17 12 | 5 13 14 11 7 13 11 18 17 20 16 9 14 6 7 5 2 3 3 1 3 10 5 9 13 | 10 12 7 9 8 14 8 10 13 14 16 6 11 12 6 6 4 5 3 7 4 8 14 7 14 | 13 10 15 15 9 8 12 5 21 14 19 12 9 11 11 6 4 4 5 4 1 7 9 13 15 | 11 20 18 16 13 16 11 14 20 14 11 9 14 15 4 8 4 1 5 3 4 3 10 13 16 | 11 13 11 13 9 18 16 16 14 11 16 8 7 3 6 3 2 6 5 6 7 6 8 15 17 | 11 23 9 10 13 14 10 15 7 12 16 7 9 12 5 9 3 3 4 5 6 7 14 9 18 | 12 9 9 16 9 12 14 22 18 23 11 11 18 7 12 7 6 2 3 4 5 4 7 10 19 | 9 10 10 14 8 16 13 17 24 21 19 14 13 12 7 4 4 6 1 4 5 6 12 11 20 | 15 17 13 6 6 16 15 11 18 14 23 8 8 3 7 6 4 2 2 2 10 13 9 6 21 | 16 11 17 17 12 17 11 16 18 22 14 12 6 8 7 4 6 1 2 3 6 8 9 16 22 | 15 15 17 11 10 22 16 16 -- 17 9 10 9 10 4 6 9 3 7 3 7 5 8 20 23 | 18 21 32 16 16 18 18 21 -- -- -- -- -- 4 7 11 3 2 2 5 7 8 19 18 24 | 11 19 17 10 21 20 19 29 22 20 15 9 11 9 7 4 3 0 8 6 4 5 15 12 25 | 13 13 8 24 13 12 15 24 19 16 14 14 10 5 10 3 2 1 4 9 11 8 13 10 26 | 17 14 15 18 14 14 16 24 17 26 12 17 8 12 6 9 6 3 3 6 11 6 9 10 27 | 15 12 11 15 11 18 16 21 31 20 17 18 11 8 8 4 6 1 4 3 8 5 16 13 28 | 20 18 15 13 14 13 22 28 19 16 16 17 10 9 6 6 7 2 7 5 7 8 8 10 29 | 15 14 18 13 18 16 17 17 19 28 17 14 15 9 7 7 5 6 3 8 2 8 9 13 30 | 14 21 11 10 11 14 17 21 19 27 14 10 16 14 7 4 3 1 4 0 7 5 12 13 ---+------------------------------------------------------------------------ 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 ---+------------------------------------------------------------------------ 01 | 02 | 03 | 04 | 05 | 06 | 07 | 1 08 | 1 09 | 1 2 10 | 1 1 11 | 1 1 12 | 13 | 14 | 15 | 16 | 1 17 | 1 1 1 1 18 | 1 19 | 1 1 1 20 | 1 1 1 21 | 1 22 | 1 3 1 1 23 | 1 3 1 1 24 | 1 1 1 1 25 | 1 1 26 | 1 1 1 27 | 28 | 2 29 | 1 30 | 1 1 1 ---+------------------------------------------------------------------------ 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 Frequency: 116.600 MHz Transmitter Location: Nagasaki-VOR at Omura city (129.9 E, 32.9 N) VOR Beacon for Air-flight (200W 30Hz AM, 116.600 MHz) Antenna : 5el-Yagi Horizon Receiver: RTL-SDR(R820T) Method : by using HROFFT software (by Kazuhiko Ohkawa), manual count using HROview and HROreport (by Michinari 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 ---+------------------------------------------------------------------------ 01 | 5 0 5 2 2 5 5 5 5 6 3 7 5 1 1 2 1 2 0 1 2 4 5 4 02 | 4 9 4 1 3 4 2 3 4 7 5 3 2 5 1 2 1 0 1 6 6 8 5 3 03 | 6 5 4 3 3 1 4 3 6 5 5 7 4 4 2 0 1 1 1 4 1 2 6 6 04 | 7 4 3 1 3 6 5 4 5 10 6 4 2 3 3 4 2 2 0 1 5 3 6 5 05 | 9 5 3 1 2 5 6 3 8 2 1 6 4 5 5 1 0 1 2 3 1 3 3 2 06 | 4 0 6 4 4 7 8 7 12 11 5 4 4 4 2 2 2 3 0 1 6 5 6 8 07 | 3 8 2 1 2 6 9 2 6 8 2 2 5 1 1 2 1 1 1 2 2 5 3 5 08 | 8 6 7 3 4 5 6 11 10 12 8 4 1 1 5 0 2 3 0 5 2 2 7 3 09 | 5 7 2 5 8 8 4 1 5 3 7 4 0 2 1 3 1 2 3 5 3 3 2 6 10 | 6 11 2 7 8 3 3 2 11 10 3 6 2 1 5 2 2 1 3 0 2 6 3 6 11 | 7 8 5 3 6 4 4 7 5 7 5 4 5 1 1 1 0 2 2 3 5 4 5 4 12 | 6 7 3 5 3 5 7 7 3 5 5 2 3 3 0 4 3 1 1 4 3 2 1 4 13 | 4 6 8 5 3 4 7 3 12 9 4 2 4 2 1 2 0 2 3 2 3 2 13 3 14 | 3 7 5 5 2 2 6 4 8 2 4 8 4 2 2 0 1 1 1 3 4 4 5 6 15 | 5 9 5 4 2 4 7 11 5 9 6 -- 3 2 1 5 0 0 1 2 2 3 5 4 16 | 7 4 4 7 4 7 5 10 6 5 10 2 1 2 3 2 2 2 1 1 4 5 4 5 17 | 5 2 4 2 0 3 1 6 2 2 5 4 7 3 0 1 1 6 2 0 3 4 2 7 18 | 7 7 9 1 5 10 6 4 3 7 3 %3 -- -- %2 -- 2 4 2 3 2 4 6 5 19 | 7 6 4 3 5 7 4 5 2 6 4 2 3 1 2 4 2 1 0 2 3 5 6 5 20 | 6 5 4 5 4 5 7 8 7 8 3 6 1 3 1 0 1 2 3 4 2 3 3 3 21 | 4 4 4 3 1 5 4 7 8 8 3 7 4 4 2 5 0 1 1 4 4 3 9 9 22 | 6 6 6 2 4 4 10 10 8 4 4 4 2 2 0 0 2 0 2 2 1 7 5 12 23 | 6 7 7 7 3 6 7 12 9 5 9 4 2 3 1 1 3 2 1 1 1 12 2 11 24 | 7 8 4 8 4 8 8 4 8 6 2 4 2 2 1 2 3 1 3 5 5 6 6 3 25 | 1 7 11 4 3 5 8 6 3 7 2 3 2 4 1 0 0 1 1 3 8 7 6 5 26 | 10 2 3 2 5 6 7 10 7 3 6 5 1 4 2 3 1 1 0 3 3 2 4 2 27 | 6 6 6 8 4 6 10 11 9 6 5 10 8 1 3 2 0 2 0 2 1 4 7 6 28 | 5 6 3 5 4 7 5 8 3 11 4 5 2 1 0 1 1 2 2 4 3 4 5 3 29 | 6 6 4 3 10 1 9 6 5 5 5 4 2 1 0 2 3 2 2 1 3 5 2 2 30 | 6 4 7 4 3 1 4 7 8 %4 5 5 3 1 3 4 3 4 1 0 6 6 7 7 ---+------------------------------------------------------------------------ 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 ---+------------------------------------------------------------------------ 01 | 02 | 03 | 04 | 05 | 06 | 07 | 1 08 | 09 | 2 10 | 1 1 1 11 | 1 1 12 | 13 | 14 | 15 | 16 | 17 | 1 18 | 1 1 19 | 1 20 | 21 | 1 22 | 1 1 2 1 1 23 | 1 1 1 1 24 | 25 | 1 26 | 27 | 28 | 1 1 1 29 | 1 1 30 | 1 1 1 ---+------------------------------------------------------------------------ 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 note: --: lost counts because of high noise level or machine failure. %: Hourly rate estimated by effective observation time less than 60 min. NS: something noise IF: Contamination due to radio noise or interference Es: Contamination due to sporadic E opening JST =UT + 9 h ----------------------------------------------------------------------------- Observer: Hironbu Shida Location: Akita, Akita, Japan (140.1 E, 39.4 N) Frequency: 53.755 MHz Transmitter Location:@ Fukui Prefectural University at Eiheiji town (136.3 E, 36.1 N) HAM beacon (JH9YYA) for RMO (50 W CW, 53.755 MHz) No modulation except for identification Antenna : HB062FDX Receiver : AITEC MRX-50 Method : by using MROFFT software (by Michinari Yamamoto) manual count using HROview and HROreport (by Michinari 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 ---+------------------------------------------------------------------------ 01 | 10 13 9 10 17 11 11 11 18 16 12 7 4 2 5 3 2 0 5 0 8 6 5 5 02 | 10 8 11 13 13 9 11 16 9 13 6 1 5 3 6 7 1 1 0 2 8 8 10 5 03 | 11 14 7 10 10 14 19 8 8 8 11 0 0 0 1 0 0 0 1 0 2 0 1 13 04 | 5 14 15 12 8 15 9 15 13 16 9 23 6 7 6 1 1 1 0 0 4 3 2 12 05 | 10 9 9 13 12 10 13 10 14 17 8 4 4 8 4 3 1 2 0 4 3 2 2 11 06 | 12 10 10 10 14 24 11 14 11 11 7 5 2 2 10 1 1 4 0 5 6 4 6 9 07 | 8 11 8 11 8 14 11 18 3 2 1 1 0 1 2 3 3 0 0 0 3 7 7 10 08 | 9 10 12 3 8 12 6 11 10 6 3 0 1 0 0 0 0 1 1 1 1 3 0 0 09 | 10 7 6 9 13 1 0 3 12 8 1 0 0 0 0 0 0 0 0 0 0 1 3 7 10 | 4 7 5 0 0 1 2 0 3 9 8 0 1 3 0 0 0 0 0 0 0 0 0 0 11 | 0 5 9 6 3 3 3 0 12 9 9 5 0 3 5 1 0 0 0 0 0 0 5 5 12 | 9 9 4 0 1 3 2 3 7 2 1 0 0 0 3 0 1 0 0 1 0 0 1 0 13 | 0 2 1 2 0 4 0 0 3 4 3 4 2 1 0 0 1 0 0 3 2 2 2 2 14 | 0 0 0 1 1 13 5 16 17 12 9 8 2 7 3 2 4 1 1 3 3 2 2 7 15 | 4 6 5 0 5 3 7 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 16 | 4 2 0 2 0 2 4 1 1 3 3 1 0 0 0 0 0 0 0 0 0 1 1 0 17 | 0 1 2 0 0 1 14 10 8 10 7 5 2 2 0 0 0 0 0 1 2 5 3 4 18 | 8 3 5 2 2 2 4 1 3 4 6 0 4 1 0 0 0 0 1 0 1 0 6 5 19 | 4 7 4 6 2 4 4 3 3 3 2 0 1 1 1 0 0 0 0 1 0 1 3 4 20 | 5 4 2 6 3 6 4 3 5 3 1 4 0 0 0 2 1 1 1 0 3 2 1 4 21 | 2 0 5 4 4 10 4 5 1 5 2 0 0 0 0 0 0 0 0 0 4 3 2 3 22 | 2 5 3 2 3 2 6 1 15 6 1 1 1 2 2 1 4 12 0 3 3 3 6 13 23 | 3 3 2 2 2 5 5 9 5 6 2 1 0 0 1 1 0 0 0 2 4 4 4 2 24 | 13 1 5 5 4 9 7 7 4 2 3 3 1 1 2 0 1 1 2 0 1 6 9 6 25 | 10 7 1 4 4 9 5 12 4 4 7 2 3 1 1 0 1 1 1 0 5 3 4 5 26 | 5 12 7 9 6 14 8 7 6 2 3 0 0 2 4 3 0 6 1 1 0 4 1 8 27 | 3 3 2 1 4 6 6 4 7 5 0 0 0 0 0 0 1 0 2 0 0 3 3 2 28 | 3 5 3 4 5 8 5 4 6 3 0 1 0 0 0 0 0 0 0 0 1 1 5 1 29 | 9 3 4 6 7 8 5 9 8 4 5 0 1 4 2 1 2 0 1 9 2 8 6 3 30 | 2 6 11 2 12 7 12 6 2 6 3 2 1 3 0 6 3 2 0 0 4 2 1 1 ---+------------------------------------------------------------------------ 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 ---+------------------------------------------------------------------------ 01 | 02 | 03 | 1 04 | 1 1 1 05 | 1 1 06 | 1 1 1 07 | 1 08 | 1 09 | 3 10 | 11 | 12 | 13 | 14 | 15 | 16 | 1 17 | 1 1 1 18 | 19 | 20 | 2 1 21 | 1 1 1 22 | 1 23 | 1 1 24 | 1 1 25 | 1 1 26 | 1 1 1 27 | 1 28 | 1 29 | 1 1 1 30 | 2 2 ---+------------------------------------------------------------------------ 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 note: --: lost counts because of high noise level or machine failure. %: Hourly rate estimated by effective observation time less than 60 min. NS: something noise IF: Contamination due to radio noise or interference Es: Contamination due to sporadic E opening JST =UT + 9 h ----------------------------------------------------------------------------- Observer: Norihiro Nakamura Location: Tsukuba, Ibaraki, Japan (140.1 E, 36.0 N) Frequency: 53.755 MHz Transmitter Location:@ Fukui Prefectural University at Eiheiji town (136.3 E, 36.1 N) HAM beacon (JH9YYA) for RMO (50 W CW, 53.755 MHz) No modulation except for identification Antenna : Dipole Receiver : KENWOOD TH-F7 Method : by using MROFFT software (by Michinari Yamamoto) manual count using HROview and HROreport (by Michinari 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 ---+------------------------------------------------------------------------ 01 | 7 4 6 8 9 4 6 8 6 3 3 4 6 6 1 2 0 1 1 5 4 3 5 3 02 | 3 7 7 4 7 11 4 6 10 12 7 6 8 6 5 0 2 2 1 6 0 1 1 2 03 | 2 2 5 5 9 4 7 7 3 7 9 5 3 1 3 2 2 0 0 0 2 4 3 2 04 | 5 3 3 5 3 4 5 4 8 7 0 4 3 5 6 1 3 %4 1 3 4 5 5 6 05 | 3 1 5 7 8 7 7 3 3 5 5 5 6 0 4 4 0 1 0 1 1 3 2 4 06 | 2 7 6 6 4 7 5 7 7 7 4 1 5 1 2 0 1 0 2 0 0 2 2 4 07 | 9 7 14 10 16 10 9 12 4 6 4 3 2 2 %2 1 2 2 1 1 4 5 2 1 08 | %2 -- -- -- -- -- -- -- %9 4 0 0 3 2 2 1 0 0 0 0 2 1 3 4 09 | 5 7 %7 10 10 5 9 3 17 1 8 7 2 1 0 2 3 2 2 4 1 5 6 5 10 | 3 6 8 4 6 7 %7 11 10 11 3 14 5 4 1 3 1 3 0 1 1 2 2 3 11 | 5 9 2 6 6 6 7 6 3 3 2 2 2 2 3 1 0 0 1 2 1 2 1 4 12 | 9 9 6 8 4 11 8 3 7 3 2 8 9 2 2 %0 0 0 1 1 0 3 4 1 13 | 4 9 5 8 9 9 6 6 8 5 5 2 4 4 4 3 0 0 0 1 1 1 6 3 14 | %6 3 1 3 2 2 5 2 1 3 0 1 5 2 1 2 3 0 0 3 2 3 3 8 15 | 8 2 10 8 18 7 5 5 9 6 3 6 1 4 1 0 1 0 2 0 2 1 6 0 16 | 3 4 4 4 0 7 6 5 7 6 2 2 3 0 %0 1 1 0 0 0 0 3 5 5 17 | 1 7 7 7 8 4 5 6 7 5 0 10 6 3 2 0 1 0 4 3 1 2 6 4 18 | 3 6 6 7 8 6 7 9 2 4 2 0 1 0 0 0 0 0 0 2 2 1 2 2 19 | 5 %4 11 6 6 4 7 10 3 2 2 2 2 1 2 3 0 2 2 1 5 0 6 4 20 | 8 6 11 5 4 9 14 8 11 1 6 6 3 0 2 3 1 0 1 1 1 5 2 8 21 | 3 9 6 6 7 7 8 10 5 4 2 7 3 0 3 2 1 2 1 1 3 3 2 2 22 |%12 4 6 10 4 8 2 6 6 3 1 2 1 3 1 0 3 0 1 1 2 1 3 6 23 | 7 6 11 14 9 11 14 20 9 4 5 3 9 %6 3 1 1 0 2 1 0 1 5 3 24 | 5 5 6 10 9 8 5 3 10 3 5 3 5 1 5 5 1 0 1 3 4 2 4 3 25 | 5 7 8 9 9 7 5 8 4 7 4 4 7 5 8 -- -- -- -- -- -- -- %1 2 26 | 2 %5 7 10 4 9 7 8 9 7 2 3 3 0 0 2 3 1 2 0 2 2 2 9 27 | 10 11 7 9 5 10 10 3 12 3 5 5 2 8 9 1 2 2 3 1 2 3 4 7 28 | 7 7 6 5 9 5 7 2 5 7 6 4 5 3 2 3 0 0 0 1 1 3 4 4 29 | 8 13%11 %8 15 14 26 14 11 13 2 7 8 7 5 1 4 1 0 1 2 6 6 8 30 | 5 11 12 17 5 10 7 9 4 1 8 10 3 4 3 0 3 0 2 0 3 1 0 7 ---+------------------------------------------------------------------------ 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 ---+------------------------------------------------------------------------ 01 | 02 | 1 03 | 04 | 1 05 | 06 | 07 | 1 08 | 09 | 1 10 | 1 1 1 11 | 12 | 13 | 14 | 15 | 1 16 | 1 17 | 1 1 18 | 19 | 20 | 1 21 | 1 22 | 1 1 23 | 2 1 1 24 | 1 25 | 26 | 27 | 28 | 29 | 1 30 | 1 ---+------------------------------------------------------------------------ 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 note: ???: lost counts because of high noise level or machine failure. %: Hourly rate estimated by effective observation time less than 60 min. NS: something noise IF: Contamination due to radio noise or interference Es: Contamination due to sporadic E opening JST =UT + 9 h ----------------------------------------------------------------------------- Observer : Hirotaka Otsuka Location : Hirakata, Osaka, Japan (135.7 E, 34.9 N) Frequency: 53.755 MHz Antenna : 2el-HB9CV, 4mH (90-270 Azimuth(East-West), 90elevation) Transmitter Location: Fukui Prefectural University at Eiheiji town (136.3 E, 36.1 N) HAM beacon (JH9YYA) for RMO (50 W CW, 53.755 MHz) No modulation except for identification Reciever: YAESU FT-690 Method : by using HROFFT software (by Kazuhiko Ohkawa), manual count using HROview and HROreport (by Michinari Yamamoto) -- Total number of echoes -- Apr| 00h| 01h| 02h| 03h| 04h| 05h| 06h| 07h| 08h| 09h| 10h| 11h| 12h| 13h| 14h| 15h| 16h| 17h| 18h| 19h| 20h| 21h| 22h| 23h|UT ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 31 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 2 | 0 | 1 | 0 | 1 | 0 | 2 | 2 | 0 |Mar 01 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 2 | 02 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 3 | 2 | 03 | 1 | 1 | 0 | 0 | 0 | 2 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 2 | 1 | 1 | 1 | 1 | 2 | 04 | 0 | 1 | 0 | 2 | 1 | 5 | 3 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 2 | 0 | 3 | 1 | 1 | 0 | 1 | 05 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 2 | 1 | 3 | 2 | 1 | 06 | 0 | 1 | 0 | 2 | 2 | 1 | 1 | 0 | 0 | 2 | 1 | 0 | 1 | 1 | 0 | 1 | 2 | 2 | 1 | 0 | 1 | 1 | 1 | 2 | 07 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 08 | 2 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 09 | 2 | 0 | 0 | 3 | 1 | 1 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0 | 2 | 1 | 0 | 1 | 10 | 0 | 0 | 0 | 1 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 11 | 0 | 0 | 0 | 2 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 2 | 1 | 0 | 2 | 0 | 12 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |??? | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 13 | 0 | 3 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 3 | 0 | 0 | 1 | 14 | 1 | 3 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 2 | 0 | 0 | 1 | 2 | 1 | 2 | 4 | 1 | 1 | 15 | 0 | 1 | 1 | 1 | 0 | 2 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 1 | 2 | 0 | 16 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 0 | 2 | 1 | 1 | 2 | 3 | 1 | 1 | 0 | 0 | 17 | 2 | 1 | 3 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 3 | 0 | 2 | 1 | 2 | 18 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 2 | 1 | 1 | 0 | 0 | 19 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 2 | 2 | 1 | 0 | 0 | 3 | 20 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 21 | 1 | 1 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 1 | 2 | 1 | 0 | 22 | 0 | 1 | 0 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 1 | 1 | 1 | 3 | 2 | 0 | 0 | 23 | 0 | 0 | 2 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 2 | 0 | 0 | 2 | 3 | 1 | 2 | 0 | 24 | 1 | 1 | 0 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 2 | 1 | 2 | 1 | 0 | 2 | 2 | 0 | 25 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 1 | 26 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 2 | 0 | 1 | 0 | 0 | 27 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 1 | 1 | 0 | 0 | 3 | 1 | 28 | 1 | 2 | 1 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 3 | 1 | 1 | 0 | 1 | 4 | 4 | 5 | 1 | 2 | 29 | 0 | 1 | 1 | 0 | 5 | 2 | 3 | 0 | 1 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 5 | 3 | 1 | 2 | 5 | 3 | 1 | 1 | 30 | 0 | 0 | 2 | 0 | 1 | 2 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 |??? |??? |??? |??? |??? |??? |??? |??? |??? | ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ Apr| 00h| 01h| 02h| 03h| 04h| 05h| 06h| 07h| 08h| 09h| 10h| 11h| 12h| 13h| 14h| 15h| 16h| 17h| 18h| 19h| 20h| 21h| 22h| 23h|UT Echoes longer than 20 seconds Apr| 00h| 01h| 02h| 03h| 04h| 05h| 06h| 07h| 08h| 09h| 10h| 11h| 12h| 13h| 14h| 15h| 16h| 17h| 18h| 19h| 20h| 21h| 22h| 23h|UT ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 31 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |Mar 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 03 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 04 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 06 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 07 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 08 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |??? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 21 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 28 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |??? |??? |??? |??? |??? |??? |??? |??? |??? | ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ Apr| 00h| 01h| 02h| 03h| 04h| 05h| 06h| 07h| 08h| 09h| 10h| 11h| 12h| 13h| 14h| 15h| 16h| 17h| 18h| 19h| 20h| 21h| 22h| 23h|UT note: ???: lost counts because of high noise level or machine failure. %: Hourly rate estimated by effective observation time less than 60 min. NS: something noise IF: Contamination due to radio noise or interference Es: Contamination due to sporadic E opening JST =UT + 9 h ----------------------------------------------------------------------------- Observer : Hiroshi Ogawa Location : Tsukuba, Ibaraki, Japan (36.04 N, 140.05 E) Frequency: 89.4 MHz (Mode:CW) Transmitter Location: Antenna : FA2 (2el.) horizon, dir: west Receiver: R820T2 & SDR + TCXO 49dB Method : by using HROFFT software (by Kazuhiko Ohkawa), manual count using HROview and HROreport (by Michinari 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 ---+------------------------------------------------------------------------ 12 | -- -- -- -- -- --%11 10 10 7 14 5 10 8 9 12 8 11 10 8 11 9 13 16 13 | 12 9 11 10 16 11 17 23 14 7 12 9 9 8 4 11 5 5 2 7 3 4 6 6 14 | 11 8 7 8 8 9 6 %5 6 6 8 6 11 8 3 3 7 3 4 4 9 3 0 6 15 | 6 7 4 7 5 5 2 2 9 8 5 4 7 5 6 6 7 6 4 1 2 10 8 5 16 | 9 2 10 9 9 %7 %2 6 3 9 8 3%13 -- -- -- -- -- -- -- -- -- -- -- 17 | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 18 | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 19 | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20 | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 21 | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 22 | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 3 1 1 2 %7 %3 7 13 23 | 10 8 7 7 11 7 6 10 8 9 6 6 8 10 3 8 %5 2 2 %2 IF 7 10 8 24 | 9 6 9 8 10 5 7 8%12 3 7 7 6 4 %8 2 1 7 6 4 5 1 5 7 25 | 11 11 6 10 12 7 9 5 %4 10 7%12 6 12 %2 IF 3 6 4 3 IF 4 9%10 26 | %6 7 12 15 9 10 10 %6 %6 %5%12 7 10 6 7 5 5 2 2 %0 2 7 8 4 27 | 8 11 9 15 8 IF %6 5 6 9 4 6 %6 4 6 4 2 1 4 %3 3 6 7 6 28 | 6 9 13 2 8 7 5 %5 6 10 8 %7 6 11%14 7 2 6 4 2 6 6 4 7 29 | 8 4 17 13 14 11 6 7 6 8 7 5 9 8 5 6 7 2 3 1 IF 5 5 5 30 | 9 3 7 12 10 9 6 %8 9 10 6 12 10 4 %6 9 1 5 5 %2 IF IF IF %4 ---+------------------------------------------------------------------------ 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 ---+------------------------------------------------------------------------ 12 | 13 | 1 1 14 | 1 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 1 24 | 1 25 | 1 26 | 1 1 27 | 1 28 | 1 29 | 1 1 30 | 1 ---+------------------------------------------------------------------------ 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 note: --: lost counts because of high noise level or machine failure. %: Hourly rate estimated by effective observation time less than 60 min. NS: something noise IF: Contamination due to radio noise or interference Es: Contamination due to sporadic E opening JST =UT + 9 h ----------------------------------------------------------------------------- About the RMOJ... RMOJ reports the results of radio meteor observation in Japan, sent to myself. Every month, this bulletin is sent to Mr.Christian Steyaert, who publishes RMOB, which is a world-wide bulletin. In Japan, radio meteor observation has become the major meteor observation by means of development of low-price receiver and useful automatic data-taking software (HROFFT by Mr.K.Ohkawa). There are 70 observational sites in Japan, most of which utilize the radio source of 53.750MHz (50W) transmitted at Fukui-NCT(by Mr.K.Maegawa). FM-radio Observation has become difficult in Japan because of the recent increase of small-FM staions. I hope RMOJ will be helpful to radio observers, as well as all meteor observers. Hiroshi Ogawa 2020.05.02