Radio Meteor Observation in Japan No.273 July 2024 - English : https://www.iprmo.org - Japanese: https://jpn.iprmo.org ----------------------------------------------------------------------------- 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 -- Jul| 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 | 3 3 8 5 8 5 7 7 5 5 1 0 3 2 3 2 2 0 1 2 2 3 7 4 02 | 6 4 7 7 6 11 4 6 3 1 2 2 0 3 0 2 1 0 1 4 3 6 2 6 03 | 7 4 5 7 6 8 9 5 3 1 0 3 1 1 1 1 3 0 0 1 1 0 1 4 04 | 6 3 3 3 4 3 4 4 2 1 0 1 0 1 2 6 1 1 0 1 0 1 3 6 05 | 1 8 9 6 4 4 4 5 2 0 2 2 0 1 0 0 1 0 0 2 0 2 4 3 06 | 1 2 3 4 1 6 3 5 0 1 0 0 1 0 2 1 1 1 0 1 3 3 7 5 07 | 10 6 4 7 9 10 8 3 2 0 0 0 0 1 3 1 0 1 2 1 0 5 3 1 08 | 4 2 4 5 4 4 4 2 0 1 1 2 0 1 2 0 2 3 1 1 2 3 0 6 09 | 9 6 6 5 4 7 7 2 2 3 3 3 1 0 1 4 3 0 1 1 2 3 2 3 10 | 7 2 11 5 3 1 14 3 4 2 0 2 1 1 0 2 1 1 0 0 2 5 5 2 11 | 4 4 4 7 5 8 5 6 5 3 1 0 1 4 1 2 2 0 1 0 2 2 2 2 12 | 3 4 7 10 6 4 8 2 2 1 3 3 2 2 3 1 3 1 1 1 1 3 6 7 13 | 5 8 7 2 8 13 7 4 3 3 1 1 0 1 0 0 2 1 0 1 1 5 1 4 14 | 5 7 3 5 2 5 6 3 4 2 1 1 3 2 0 0 2 1 1 4 1 4 6 11 15 | 1 3 5 6 8 7 4 4 3 1 1 0 3 0 2 1 1 0 0 4 0 0 3 5 16 | 6 3 3 5 3 12 2 2 1 1 2 1 1 0 2 0 1 2 2 2 2 3 5 4 17 | 2 10 8 3 5 7 8 5 4 1 0 2 0 0 0 1 0 1 0 3 3 2 4 4 18 | 4 6 6 2 6 8 4 3 1 0 1 0 0 0 0 0 1 1 1 0 3 3 5 3 19 | 9 8 3 3 3 2 4 5 2 0 0 1 4 2 2 0 0 2 0 5 3 3 5 1 20 | 8 6 5 5 3 7 4 0 4 1 2 1 0 1 0 1 1 2 1 2 2 5 1 6 21 | 10 7 0 4 7 9 2 6 5 8 1 5 0 0 0 2 1 2 0 2 0 1 1 4 22 | 3 7 2 6 8 7 0 3 1 0 0 0 0 1 1 0 0 0 1 0 2 1 4 2 23 | 5 4 1 3 4 4 6 4 1 0 0 4 1 1 1 0 0 0 0 3 2 3 5 3 24 | 4 8 6 6 4 7 7 6 7 8 1 0 0 1 0 1 1 0 1 1 0 5 9 6 25 | 16 11 9 7 10 11 9 3 3 0 1 1 0 1 0 2 1 1 2 3 13 15 17 10 26 | 19 11 13 9 13 7 6 4 1 0 0 0 0 0 0 0 1 0 1 1 3 5 4 18 27 | 18 14 13 11 8 14 6 6 4 1 0 0 0 0 0 0 0 2 2 0 1 6 4 10 28 | 9 9 13 7 8 13 6 8 0 2 0 1 0 0 0 0 0 1 0 0 3 4 11 9 29 | 12 14 4 9 8 8 8 1 0 0 1 0 1 0 0 0 0 0 1 1 2 3 14 3 30 | 7 13 23 14 10 9 5 6 0 0 0 3 1 0 0 0 0 1 0 0 2 7 9 11 31 | 21 16 18 20 17 17 6 3 3 2 0 0 NS %0 0 0 0 0 3 2 2 8 9 16 ---+------------------------------------------------------------------------ Jul| 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 Jul| 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 02 | 03 | 1 1 04 | 05 | 06 | 07 | 08 | 09 | 10 | 2 11 | 1 1 1 12 | 1 1 1 13 | 1 14 | 15 | 16 | 17 | 2 18 | 19 | 1 20 | 21 | 22 | 23 | 24 | 25 | 26 | 1 27 | 28 | 1 29 | 1 30 | 31 | 1 ---+------------------------------------------------------------------------ Jul| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST ----------------------------------------------------------------------------- Observer : Tuboi Observatory[TSUBOI MASAKI] Location : Asakitaku,Hiroshimashi,JAPAN (34.45 N, 132.50 E) Frequency: 50.027 MHz Transmitter Location: HAM beacon (JE7YNQ) (50 W CW, 50.027 MHz) Antenna : 2el. HB9CV Az:60deg. horizon. 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 -- Jul| 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 | 2 1 6 5 2 3 4 2 6 1 0 1 3 3 3 4 0 0 0 0 2 2 0 3 02 | 1 0 3 1 1 0 2 0 2 1 1 2 3 0 0 0 0 0 0 0 0 0 1 1 03 | 1 1 0 0 0 1 0 3 3 2 2 1 0 0 0 1 3 2 0 0 0 5 1 2 04 | 4 0 1 1 0 1 0 0 1 0 1 0 3 0 1 7 1 2 2 1 0 0 0 0 05 | 0 1 1 1 0 1 2 2 3 2 1 3 7 0 0 1 3 2 0 6 1 0 0 0 06 | 0 1 2 3 1 1 4 2 2 1 0 0 1 0 1 0 0 2 0 0 0 0 3 1 07 | 3 0 1 1 0 0 1 0 0 5 0 1 0 1 0 0 0 0 0 3 2 0 0 2 08 | 1 0 1 1 2 0 0 0 0 0 0 1 1 0 0 %5 1 0 0 0 0 0 0 0 09 | %4 %0 2 4 1 1 1 0 1 0 0 0 4 2 0 1 1 0 0 0 4 1 0 1 10 | 0 0 0 0 0 0 1 0 0 0 3 0 0 1 0 1 0 0 0 1 0 2 0 1 11 | 0 2 1 1 0 1 1 2 3 0 1 0 0 2 0 0 0 1 1 0 0 0 0 2 12 | 1 0 2 0 0 1 3 0 0 0 1 0 0 3 1 0 3 0 0 1 2 %2 0 0 13 | 2 0 1 2 1 4 2 0 0 0 0 2 1 1 0 3 3 0 0 0 0 1 1 1 14 | 0 2 4 3 1 3 0 0 3 0 0 0 2 2 0 3 1 2 0 2 0 %5 0 0 15 | 0 4 1 3 3 4 1 3 0 0 0 1 3 2 0 1 1 0 %0 0 1 %1 1 0 16 | 1 3 0 0 3 0 1 0 1 4 2 1 0 3 0 2 1 0 2 0 0 1 0 2 17 | 1 0 1 0 3 2 1 2 1 3 1 0 1 0 0 1 2 0 0 0 1 0 2 2 18 | 2 0 5 0 1 2 1 0 4 1 0 2 1 1 3 0 2 0 0 0 0 0 1 1 19 | 1 2 1 4 4 3 4 1 1 4 1 1 1 5 2 0 0 0 0 0 0 0 0 0 20 | 0 2 1 3 4 2 2 1 7 2 2 4 0 0 0 0 0 0 0 0 3 1 1 2 21 | 1 5 4 3 8 5 1 2 2 2 3 4 0 1 1 3 2 2 9 3 0 2 0 1 22 | 0 2 1 6 2 3 1 5 2 1 2 4 2 4 1 1 2 0 0 0 0 0 0 1 23 | 2 6 6 6 5 2 1 4 0 0 1 3 1 1 2 2 1 1 1 0 2 6 0 4 24 | 7 IF IF IF 3 3 1 6 1 3 0 IF %2 1 2 3 1 0 0 0 0 0 3 0 25 | 1 2 6 3 2 3 2 1 1 1 0 0 1 1 0 0 1 3 0 0 1 1 2 1 26 | 1 3 5 2 1 1 1 1 0 2 5 1 2 2 3 0 0 0 0 0 0 0 4 8 27 | 11 9 9 11 5 1 7 3 2 1 0 1 1 3 1 0 0 0 2 0 0 IF IF IF 28 | 8 10 11 9 7 5 7 1 0 3 1 1 4 1 2 3 0 3 0 0 2 %0 3 1 29 | 5 16 9 16 11 10 3 2 1 3 0 1 2 1 1 0 1 1 0 0 0 IF IF IF 30 | 4 10 16 5 15 4 4 1 0 5 2 2 3 1 0 1 1 0 0 0 0 0 IF %2 31 | 6 8 8 6 7 3 1 2 3 1 0 1 2 4 2 0 0 0 2 0 0 1 1 3 ---+------------------------------------------------------------------------ Jul| 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 Jul| 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 02 | 1 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 1 22 | 23 | 24 | 25 | 1 26 | 27 | 28 | 1 29 | 1 1 30 | 1 31 | ---+------------------------------------------------------------------------ Jul| 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: 112.0 MHz Transmitter Location: VOR-Komatsu, Japan Antenna : 5el-Yagi Az60deg 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 -- Jul| 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 | 2 3 5 7 1 0 8 8 2 2 2 4 9 10 5 6 5 4 3 IF %0 6 8 4 02 | 2 1 5 3 9 4 7 %5 IF 4 5 3 6 8 7 5 6 2 7 %2 %2 2 5 2 03 | 3 5 4 2 3 1 5 4 9%10 IF IF %9 %2 IF IF IF %2 3 4 2 3 5 5 04 | 2 6 8 0 3 4 1 2 4 6 2 4 3 6 %2 7 1 3 5 %0 %7 %3 0 6 05 | 3 6 5 3 2 3 4 3 8 2 2 %3 IF IF 3 5 10 3 4 2 2 2 2 1 06 | 2 1 4 4 2 2 6 2 6 5 4 2 1 1 1 2 6 %1 IF IF %2 1 4 2 07 | 2 4 4 3 6 8 1 5 2 5 2 1 3 1 1 %2 6 2 0 %2 %5 %0 2 %6 08 | 1 4 2 3 6 5 3 4 4 4 1 1 2 1 0 4 1 2 6 IF %0 3 5 3 09 | 6 5 1 3 7 9 3 7 7 5 5 6 2 2 2 3 4 1 6 3 1 2 4 5 10 | 5 6 3 0 0 5 0 4 IF IF 2 1 2 0 2 5 5 IF %4 %1 %2 0 3 3 11 | 6 7 5 4 5 9 4 5 4 6 1 3 4 0 2 4 2 2 3 0 4 4 5 3 12 | 3 3 6 5 5 5 2 5 4 7 5 1 1 1 0 0 3 3 5 IF 1 1 3 4 13 | 4 4 7 2 0 5 6 7 4 3 1 1 5 5 5 1 5 1 %0 IF %6 4 5 3 14 | 0 6 5 3 3 3 5 0 IF %2 4 7 %2 3 4 0 %2 %0 3 IF %0 3 8 1 15 | 8 4 1 3 0 2 3 4 4 5 7 4 2 4 7 4 %0 5 1 4 2 1 2 2 16 | 3 3 2 4 4 8 6 3 3 6 2 3 6 2 3 5 IF %3 3 %0 %3 8 2 3 17 | 5 4 4 4 7 3 5 2 5 2 5 4 4 1 1 4 3 4 10 IF IF 0 2 6 18 | 4 2 2 4 4 2 3 5 3 3 1 1 1 1 2 4 4 1 3 IF 3 1 5 3 19 | 6 2 5 0 3 3 0 3 7 3 5 2 2 0 7 2 4 2 5 %3 %1 6 5 4 20 | 5 2 4 7 12 11 12 16 9 11 11 11 0 4 3 4 4 %9%17 %6 IF 4 2 4 21 | 8 8 6 3 8 10 12 9 %5 IF 1 3 2 %4 IF IF IF 2 5 IF %5 %0 IF IF 22 | IF 8 IF 11 4 7 6 10 6 IF IF IF IF IF IF IF IF 5 5 IF%11 11 14 16 23 | 14 12 19 10 13 15 21 5 6 8 2 1 5 5 2 3 %4 IF 8 IF %5 8 5 14 24 | 16 %5 IF IF 14 13 16 11 11 9 10%10 %4 %8 IF %8 4 9 4 IF %6 10 16 15 25 | 14 8 13 9 8 8 12 10 9 5 3 2 0 1 1 3 6 6 3 3 0 10 6 10 26 | 14 5 9 10 10 3 14 10 7 2 1 3 2 0 3 3 5 8 6 2 %2 6 5 14 27 | 9 13 3 5 6 8 7 6 11 5 5 1 0 1 3 %0 IF 5 3 5 5 3 9 5 28 | 4 3 3 3 0 1 1 0 2 0 0 3 0 3 0 0 0 2 0 0 0 2 2 2 29 | 4 2 3 2 2 2 4 0 0 1 0 3 1 0 0 1 0 7 2 7 0 3 3 5 30 | 4 2 3 4 6 4 6 1 5 3 3 1 0 0 2 0 1 2 1 2 0 1 5 7 31 | 6 11 5 5 6 7 3 6 0 2 3 0 2 0 1 3 3 2 3 0 3 4 2 2 ---+------------------------------------------------------------------------ Jul| 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 Jul| 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 02 | 1 03 | 1 04 | 05 | 06 | 07 | 08 | 1 09 | 10 | 1 11 | 1 12 | 1 1 13 | 1 1 14 | 15 | 1 1 16 | 17 | 2 2 1 18 | 19 | 1 1 20 | 1 1 1 21 | 22 | 23 | 1 1 24 | 2 25 | 26 | 1 1 27 | 1 28 | 1 29 | 30 | 31 | 1 ---+------------------------------------------------------------------------ Jul| 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: 50.027 MHz Transmitter Location: HAM beacon (JE7YNQ) (50W CW, 50.027MHz) Antenna : HB9CV 3el. Az:240deg. horizon. Receiver: RTL-SDR HDSDR Method : by using HROFFT software (by Kazuhiko Ohkawa), manual count using HROview and HROreport (by Michinari Yamamoto) -- Total number of echoes -- Jul| 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 | 6 6 7 7 6 6 3 3 4 4 1 0 2 1 3 3 4 4 1 3 3 4 5 8 02 | 6 9 10 2 3 7 6 8 5 1 4 5 %1 3 6 1 1 0 0 1 6 8 7 12 03 | 9 5 5 -- -- -- -- -- -- %8 -- -- %6 0 1 2 0 3 0 2 2 6 2 5 04 | 2 4 2 3 3 4 3 2 0 0 1 2 1 2 0 3 2 1 0 0 2 1 3 4 05 | 3 2 7 6 3 5 3 5 4 2 2 1 0 0 1 0 1 0 0 2 0 1 2 %4 06 | 1 4 5 3 3 5 4 6 3 2 1 0 1 0 3 2 0 2 1 0 %2 -- -- -- 07 | -- -- 2 -- -- -- -- -- -- -- -- -- -- -- -- 2 3 4 0 2 2 1 4 6 08 | 9 6 4 5 8 7 4 2 0 -- %3 1 %0 -- 0 2 0 1 2 0 2 1 4 3 09 | 3 1 3 3 3 4 4 4 0 0 1 0 0 0 0 -- -- 1 0 3 2 3 4 4 10 | 2 3 3 3 4 9 3 %4 -- -- 2 0 0 0 0 2 2 0 1 0 3 3 2 5 11 | 4 2 3 3 2 1 2 %2 7 3 1 2 1 2 1 2 1 2 1 1 9 7 6 9 12 | 5 7 2 4 1 10 7 4 2 4 5 1 1 0 0 1 2 0 0 0 5 5 -- -- 13 | 5 1 5 3 8 9 4 3 0 1 3 2 1 3 0 0 2 -- 1 3 4 2 6 5 14 | 7 5 8 9 3 6 %4 -- 4 0 2 1 1 1 2 3 0 0 1 4 3 3 1 6 15 | 6 6 8 4 10 6 2 6 -- 2 2 -- 2 0 %8 4 2 4 2 -- -- %8 11 6 16 | 13 15 14 8 15 13 6 9 5 6 7 6 4 5 %2 -- %7 4 3 2 6 5 10 11 17 | 12 9 8 14 8 19 8 9 5 5 %5 %2 -- -- 2 5 8 4 2 1 8 9 %6 13 18 | 11 9 11 12 4 7 7 8 3 5 3 3 3 3 4 2 2 1 2 5 3 5 6 9 19 | 10 5 7 6 7 6 5 4 10 4 7 1 0 %0 1 0 5 4 1 2 6 4 4 3 20 | 8 7 8 7 4 6 4 6 4 2 2 1 1 2 3 2 1 %4 2 4 6 -- 6 10 21 | 6 8 8 10 8 8%13 3 5 -- -- 0 2 4 3 2 %2 -- -- %5 4 6 4 -- 22 | -- -- -- -- -- -- -- -- 1 1 0 2 1 -- -- -- -- 0 2 0 -- %2 5 5 23 | 10 6 5 5 6 3 9 3 4 1 2 3 0 0 1 2 1 2 %2 0 2 4 4 8 24 | 7 10 8 6 7 6 8 4 4 2 2 %2 %3 5 3 1 1 1 0 2 1 4 8 6 25 | 10 %2 3 5 12 7 6 2 2 4 0 0 3 1 %1 -- -- 0 1 2 1 6 8 12 26 | 10 16 12 -- -- -- -- -- 3 1 0 3 0 0 3 2 1 %0 2 3 2 2 10 8 27 | 14 9 10 8 2 7 5 4 1 1 2 0 0 3 %2 2 0 1 2 0 0 6 5 6 28 | 17 15 8 5 8 7 6 1 %5 -- 2 0 %0 1 0 1 0 0 2 2 2 4 9 20 29 | 16 10 8 13 11 6 5 2 2 4 1 1 1 0 1 2 0 0 3 2 2 2 12 15 30 | 12 9 7 13 6 12 6 2 5 2 1 1 2 1 0 2 0 1 2 2 3 5 11 14 31 | 15 15 18 10 7 10 6 7 %7 -- 1 1 -- -- -- -- -- -- -- -- -- -- -- -- ---+------------------------------------------------------------------------ Jul| 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 Jul| 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 02 | 1 1 1 03 | 04 | 1 05 | 06 | 07 | 08 | 1 09 | 1 10 | 11 | 12 | 1 13 | 1 14 | 1 15 | 1 1 1 1 16 | 1 2 1 17 | 1 18 | 1 19 | 1 20 | 1 1 21 | 22 | 23 | 1 24 | 1 25 | 1 1 1 26 | 1 27 | 1 28 | 1 29 | 30 | 1 1 1 1 1 31 | 1 ---+------------------------------------------------------------------------ Jul| 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: 116.900 MHz Transmitter Location: Chitose-VOR at Tomakomai city (141.7 E, 42.7 N) VOR Beacon for Air-flight (200W 30Hz AM, 116.900 MHz) Antenna : 5el-Yagi Horizon Receiver: AIRSPYmini Method : by using HROFFT software (by Kazuhiko Ohkawa), manual count using HROview and HROreport (by Michinari Yamamoto) -- Total number of echoes -- Jul| 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 5 10 11 12 14 13 11 13 7 2 8 10 5 6 1 3 2 2 1 2 7 6 02 | 2 5 5 9 19 19 7 12 12 13 6 4 5 7 7 4 3 4 2 3 5 5 2 2 03 | 8 4 4 10 14 15 13 12 11 14 7 4 2 3 12 3 7 2 0 4 5 6 4 3 04 | 5 4 1 6 10 12 10 12 18 8 6 3 3 14 6 3 8 3 3 6 2 5 3 3 05 | 4 2 4 4 14 15 11 11 10 5 3 3 9 3 5 7 2 3 3 1 4 8 7 7 06 | 4 5 3 6 14 10 15 12 9 5 2 2 8 4 3 3 2 3 3 3 4 8 0 2 07 | 1 1 4 6 14 17 15%10 15 4 6 2 2 5 4 3 6 4 1 %2 3 2 7 18 08 | 4 3 9 8 9 12 12 15 8 9 9 7 9 9 5 1 4 3 6 2 6 2 3 6 09 | 8 10 9 11 12 26 16 12 8 6 2 2 8 8 6 5 2 7 4 2 4 5 3 2 10 | 1 2 6 7 8 14 10 12 5 3 2 5 3 2 5 4 4 1 0 1 3 1 3 5 11 | 8 9 5 5 9 6 7 10 9 4 6 5 4 4 8 6 6 4 5 3 3 2 1 4 12 | 4 2 6 2 12 11 11 5 9 4 8 5 10 6 10 3 2 4 0 1 6 3 6 4 13 | 4 2 5 3 12 11 6 7 %4 3 3 3 8 7 3 1 3 1 3 1 4 8 10 8 14 | 10 11 5 8 11 13 13 10 6 6 5 6 5 5 8 7 1 3 0 2 4 5 4 4 15 | 1 1 4 4 7 7 7 11 5 5 6 3 3 5 5 6 2 %1 2 5 2 2 13 2 16 | 3 5 9 6 8 7 4 4 9 7 6 2 5 3 5 3 4 2 2 3 2 1 6 9 17 | 3 1 4 1 14 14 10 10 7 6 5 4 4 3 6 9 5 2 2 1 4 3 1 2 18 | 3 7 4 6 8 12 5 9 11 8 5 4 1 3 %0 0 0 2 6 2 5 %7 17 3 19 | 5 3 2 5 8 12 10 8 7 6 5 5 6 3 5 5 2 1 2 3 2 7%14 3 20 | 2 7 3 4 7 9 13 13 7 6 1 7 6 2 3 1 5 2 5 0 2 5 8 5 21 | 0 1 13 12 8 18 6 10 3 6 %4 5 7 6 7 2 3 2 3 2 6 1 9 7 22 | 12 22 13 7 19 11 10 11 8 6 7 4 7 2 5 6 2 2 4 4 0 4 8 6 23 | 16 12 6 11 11 14 11 7 8%10 7 6 2 4 6 7 6 2 2 1 10 5 6 9 24 | 11 11 10 9 14 11 9 7 8 6 2 0 4 2 2 2 3 3 3 4 3 3 3 4 25 | 5 1 5 5 8 13 10 8 9 9 5 4 5 4 %7 6 1 0 2 7 6 5 3 15 26 | 19 31 14 19 12 14 13 7 %7 6 4 1 3 1 10 7 4 4 2 3 6 6 5 7 27 | 18 19 15 18 21 19 7 6 7 8 4 3 5 3%12 5 5 2 1 6 6 10 13 34 28 | 26 28 33 16 28 18 15 7 9 4 4 2 3 7 4 8 3 4 3 8 5 8 5 22 29 | 20 21 20 26 25 24 15 9 8 5 1 6 6 5 7 4 3 5 2 3 4 7 11 12 30 | 16 11 13 20 12 25 9 6 8 10 5 2 6 8 6 2 9 5 6 5 8 4 4 18 31 | 17 19 15 13 19 17 11 9 10 5 4 1 6 4 4 4 3 2 2 5 9 4 17 18 ---+------------------------------------------------------------------------ Jul| 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 Jul| 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 | 2 02 | 1 1 1 03 | 1 04 | 1 1 05 | 1 06 | 1 07 | 08 | 09 | 1 10 | 1 11 | 2 1 12 | 1 1 13 | 1 14 | 1 15 | 16 | 1 17 | 18 | 1 1 1 1 2 19 | 20 | 21 | 1 1 22 | 23 | 1 24 | 1 1 25 | 26 | 27 | 1 1 28 | 1 1 1 1 29 | 1 1 30 | 31 | 1 1 1 ---+------------------------------------------------------------------------ Jul| 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 : Hiroshi Suzuki Location : Soma, Fukushima, Japan (37.79 N, 140.98 E) Frequency: 52.905 MHz Transmitter Location:@ HAM beacon (50 W CW, 52.905 MHz), Higashimurayama, Tokyo, Japan No modulation except for identification Antenna : AF-4 (4el.) horizon, dir: west Receiver: RTL-SDR Method : by using HROFFT software (by Kazuhiko Ohkawa) -- Total number of echoes -- Jul| 00h| 01h| 02h| 03h| 04h| 05h| 06h| 07h| 08h| 09h| 10h| 11h| 12h| 13h| 14h| 15h| 16h| 17h| 18h| 19h| 20h| 21h| 22h| 23h|JST ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 01 | 5 | 7 | 5 | 6 | 3 | 2 | 6 | 2 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 3 | 1 | 0 | 3 | 1 | 1 | 2 | 0 | 02 | 1 | 0 | 1 | 0 | 0 | 2 | 6 | 5 | 6 | 1 | 1 | 2 | 2 | 2 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 2 | 3 | 4 | 03 | 2 | 5 | 3 | 8 | 2 | 5 | 7 | 2 | 0 | 1 | 0 | 1 | 0 | 0 | 3 | 4 | 1 | 0 | 1 | 1 | 0 | 0 | 2 | 2 | 04 | 2 | 1 | 1 | 2 | 1 | 4 | 3 | 3 | 1 | 2 | 1 | 0 | 1 | 1 | 1 | 4 | 1 | 2 | 1 | 0 | 0 | 2 | 3 | 4 | 05 | 0 | 2 | 4 | 3 | 1 | 2 | 2 | 1 | 4 | 6 | 0 | 2 | 2 | 2 | 2 | 4 | 2 | 0 | 0 | 1 | 0 | 2 | 6 | 4 | 06 | 7 | 13 | 14 | 7 | 5 | 7 | 9 | 4 | 2 | 2 | 5 | 2 | 3 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 2 | 2 | 0 | 7 | 07 | 14 | 16 | 18 | 21 | 15 | 19 | 4 | 5 | 1 | 4 | 6 | 3 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 2 | 3 | 14 | 08 | 6 | 9 | 21 | 11 | 16 | 7 | 0 | 3 | 6 | 4 | 6 | 4 | 1 | 3 | 6 | 1 | 4 | 4 | 1 | 3 | 1 | 3 | 5 | 5 | 09 | 6 | 10 | 9 | 12 | 9 | 13 | 5 | 3 | 1 | 0 | 3 | 1 | 4 | 2 | 1 | 3 | 1 | 1 | 0 | 2 | 1 | 2 | 9 | 11 | 10 | 4 | 7 | 13 | 8 | 16 | 14 | 2 | 3 | 5 | 1 | 6 | 3 | 2 | 1 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 1 | 1 | 4 | 2 | 2 | 3 | 5 | 1 | 0 | 1 | 0 | 2 | 1 | 0 | 2 | 3 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 12 | 2 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 1 | 2 | 0 | 2 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 13 | 0 | 2 | 2 | 0 | 0 | 1 | 1 | 3 | 2 | 4 | 0 | 2 | 0 | 2 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 14 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 2 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 3 | 16 | 1 | 2 | 3 | 0 | 2 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 4 | 1 | 0 | 1 | 2 | 1 | 0 | 2 | 3 | 4 | 6 | 17 | 4 | 4 | 5 | 4 | 4 | 2 | 2 | 1 | 2 | 3 | 3 | 0 | 0 | 2 | 3 | 3 | 0 | 0 | 0 | 0 | 1 | 1 | 4 | 0 | 18 | 4 | 1 | 2 | 5 | 1 | 4 | 7 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 2 | 1 | 1 | 0 | 2 | 0 | 4 | 5 | 2 | 19 | 3 | 3 | 4 | 1 | 6 | 2 | 1 | 2 | 3 | 3 | 2 | 6 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 6 | 1 | 2 | 7 | 5 | 20 | 10 | 10 | 10 | 6 | 5 | 3 | 2 | 4 | 3 | 1 | 4 | 1 | 1 | 1 | 3 | 4 | 2 | 0 | 2 | 0 | 0 | 1 | 0 | 2 | 21 | 1 | 2 | 5 | 2 | 1 | 3 | 5 | 7 | 1 | 0 | 4 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 2 | 0 | 1 | 1 | 3 | 5 | 22 | 1 | 5 | 4 | 8 | 6 | 3 | 1 | 4 | 7 | 6 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 3 | 3 | 9 | 6 | 23 | 16 | 10 | 9 | 9 | 18 | 9 | 4 | 1 | 0 | 2 | 2 | 1 | 0 | 1 | 1 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 4 | 7 | 24 | 6 | 5 | 11 | 11 | 6 | 4 | 2 | 1 | 3 | 0 | 3 | 6 | 0 | 3 | 1 | 1 | 3 | 0 | 3 | 1 | 1 | 2 | 6 | 3 | 25 | 4 | 5 | 9 | 8 | 2 | 3 | 5 | 2 | 1 | 2 | 3 | 1 | 0 | 0 | 3 | 2 | 4 | 0 | 1 | 0 | 1 | 0 | 2 | 1 | 26 | 4 | 6 | 9 | 12 | 3 | 2 | 4 | 2 | 0 | 2 | 2 | 1 | 1 | 1 | 1 | 5 | 1 | 1 | 2 | 4 | 2 | 3 | 14 | 10 | 27 | 12 | 24 | 10 | 14 | 3 | 1 | 3 | 2 | 1 | 0 | 7 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 2 | 6 | 7 | 1 | 28 | 7 | 6 | 12 | 17 | 7 | 2 | 1 | 2 | 2 | 0 | 1 | 2 | 0 | 2 | 1 | 5 | 2 | 0 | 2 | 2 | 1 | 4 | 4 | 11 | 29 | 20 | 13 | 18 | 16 | 8 | 8 | 0 | 4 | 5 | 8 | 4 | 4 | 1 | 2 | 1 | 2 | 0 | 3 | 1 | 2 | 4 | 5 | 15 | 22 | 30 | 18 | 15 | 21 | 24 | 11 | 20 | 9 | 4 | 1 | 2 | 2 | 1 | 0 | 2 | 1 | 1 | 2 | 1 | 1 | 0 | 1 | 3 | 5 | 12 | 31 | 21 | 18 | 15 | 17 | 12 | 11 | 7 | 3 | 1 | 3 | 3 | 0 | 0 | 1 | 1 | 1 | 5 | 0 | 3 | 4 | 1 | 3 | 12 | 12 | ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ Jul| 00h| 01h| 02h| 03h| 04h| 05h| 06h| 07h| 08h| 09h| 10h| 11h| 12h| 13h| 14h| 15h| 16h| 17h| 18h| 19h| 20h| 21h| 22h| 23h|JST Echoes longer than 20 seconds Jul| 00h| 01h| 02h| 03h| 04h| 05h| 06h| 07h| 08h| 09h| 10h| 11h| 12h| 13h| 14h| 15h| 16h| 17h| 18h| 19h| 20h| 21h| 22h| 23h|JST ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 02 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 03 | 0 | 0 | 0 | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 04 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 06 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 07 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 08 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 09 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 14 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 17 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 19 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 2 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 22 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 24 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 25 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 27 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 28 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 29 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 30 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 31 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 1 | ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ Jul| 00h| 01h| 02h| 03h| 04h| 05h| 06h| 07h| 08h| 09h| 10h| 11h| 12h| 13h| 14h| 15h| 16h| 17h| 18h| 19h| 20h| 21h| 22h| 23h|JST 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 -- Jul| 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 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 30 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 1 | 3 | 2 | 0 | 3 | 1 | 2 | 0 | 0 |Jun 01 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 4 | 1 | 3 | 1 | 2 | 0 | 0 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 1 | 0 | 0 | 2 | 0 | 2 | 1 | 0 | 03 | 3 | 1 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 2 | 0 | 4 | 3 | 0 | 04 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 2 | 2 | 3 | 2 | 2 | 0 | 0 | 05 | 1 | 0 | 0 | 1 | 1 | 0 | 2 | 0 | 1 | 2 | 0 | 0 | 3 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 06 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 7 | 07 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 08 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 3 | 1 | 2 | 1 | 1 | 09 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 5 | 1 | 2 | 0 | 1 | 0 | 1 | 0 | 10 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 3 | 0 | 4 | 0 | 0 | 11 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 2 | 3 | 2 | 1 | 5 | 0 | 2 | 0 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 0 | 2 | 2 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 2 | 13 | 2 | 0 | 1 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 2 | 14 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 1 | 0 | 0 | 3 | 3 | 3 | 0 | 0 | 15 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 2 | 4 | 2 | 0 | 0 | 2 | 2 | 0 | 16 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 4 | 1 | 0 | 0 | 0 | 17 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 2 | 3 | 2 | 0 | 19 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 1 | 0 | 0 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 2 | 4 | 0 | 1 | 0 | 4 | 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 | 1 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 1 | 0 | 28 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 3 | 3 | 0 | 2 | 2 | 0 | 0 | 3 | 0 | 0 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 | 3 | 3 | 2 | 2 | 0 | 3 | 1 | 0 | 30 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 1 | 0 | 0 | 2 | 0 | 2 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 1 |??? |??? |??? |??? |??? |??? |??? |??? |??? | ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ Jul| 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 Jul| 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 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 30 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |Jun 01 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 0 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 03 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 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 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 05 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 06 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 07 | 0 | 0 | 0 | 0 | 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 | 1 | 0 | 2 | 0 | 0 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 14 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 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 | 1 | 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 | 1 | 0 | 0 | 0 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 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 | 1 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 30 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |??? |??? |??? |??? |??? |??? |??? |??? |??? | ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ Jul| 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 : 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 -- Jul| 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 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 30 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |Jun 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 03 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 04 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 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 | 1 | 0 | 06 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 07 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 08 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 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 | 1 | 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 | 1 | 0 | 0 | 0 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 17 | 1 | 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 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |??? |??? |??? |??? |??? |??? |??? |??? |??? | ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ Jul| 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 Jul| 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 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 30 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |Jun 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 0 | 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 | 0 | 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 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 1 | 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 | 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 | 0 | 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 | 0 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 0 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |??? |??? |??? |??? |??? |??? |??? |??? |??? | ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ Jul| 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: Norihiro Nakamura Location: Tsukuba, Ibaraki, Japan (140.1 E, 36.0 N) Frequency: 52.905 MHz Transmitter Location:@ HAM beacon (50 W CW, 52.905 MHz), Higashimurayama, Tokyo, Japan No modulation except for identification Antenna : Dipole Receiver : YAESU FT-817 Method : by using MROFFT software (by Michinari Yamamoto) manual count using HROview and HROreport (by Michinari Yamamoto) -- Total number of echoes -- Jul| 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 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 30 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 5 | 6 | 2 | 11 | 7 | 5 | 6 | 5 | 3 |Jun 01 | 2 | 1 | 3 | 2 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 2 | 1 | 3 | 1 | 7 | 8 | 4 | 5 | 12 | 6 | 2 | 3 | 02 | 0 | 0 | 1 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 6 | 5 | 5 | 4 | 6 | 0 | 7 | 7 | 3 | 03 | 1 | 0 | 1 | 2 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 3 | 1 | 7 | 7 | 4 | 2 | 7 | 2 | 0 | 04 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 4 | 3 | 4 | 4 | 2 | 5 | 7 | 7 | 12 | 6 | 0 | 2 | 05 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 3 | 5 | 5 | 9 | 4 | 3 | 4 | 9 | 1 | 0 | 06 | 1 | 0 | 0 | 0 | 0 | 1 | 5 | 2 | 1 | 0 | 0 | 1 | 0 | 2 | 9 | 1 | 3 | 1 | 0 | 4 | 2 | 2 | 2 | 0 | 07 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 5 | 2 | 1 | 3 | 7 | 5 | 7 | 4 | 1 | 08 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 1 | 1 | 1 | 2 | 1 | 3 | 5 | 8 | 12 | 6 | 4 | 7 | 5 | 1 | 09 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 2 | 1 | 0 | 2 | 4 | 4 | 2 | 6 | 5 | 5 | 5 | 7 | 4 | 2 | 1 | 10 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 2 | 6 | 4 | 2 | 3 | 5 | 5 | 0 | 4 | 11 | 1 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 0 | 1 | 1 | 0 | 0 | 2 | 1 | 3 | 5 | 5 | 5 | 4 | 8 | 6 | 1 | 3 | 12 | 2 | 1 | 2 | 4 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 7 | 4 | 4 | 2 | 7 | 2 | 0 | 2 | 0 | 0 | 13 | 0 | 0 | 0 | 2 | 1 | 0 | 1 | 2 | 0 | 0 | 0 | 2 |??? |??? |??? | 5 | 7 | 4 | 6 | 5 | 6 | 3 | 5 | 2 | 14 | 5 | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 5 | 4 | 7 | 4 | 10 | 6 | 6 | 4 | 10 | 7 | 6 | 15 | 3 | 2 | 2 | 1 | 3 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 7 | 4 | 9 | 6 | 8 | 8 | 7 | 5 | 3 | 16 | 1 | 2 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 2 | 0 | 1 | 1 | 2 | 1 | 2 | 5 | 7 | 4 | 6 | 2 | 3 | 2 | 1 | 17 | 0 | 4 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 4 | 4 | 6 | 3 | 4 | 4 | 4 | 0 | 3 | 18 | 1 | 0 | 2 | 1 | 0 | 2 | 1 | 0 | 1 | 0 | 2 | 5 | 1 | 3 | 6 | 4 | 7 | 3 | 2 | 7 | 3 | 3 | 1 | 1 | 19 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 0 | 1 | 4 | 1 | 8 | 10 | 4 | 8 | 8 | 3 | 5 | 3 | 2 | 20 | 1 | 3 | 0 | 3 | 0 | 0 | 1 | 0 | 3 | 3 | 1 | 3 | 10 | 10 | 2 | 10 | 10 | 6 | 4 | 3 | 3 | 2 | 0 | 0 | 21 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 3 | 7 | 5 | 9 | 12 | 7 | 4 | 2 | 2 | 22 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 4 | 3 | 3 | 3 | 3 | 6 | 8 | 7 | 6 | 0 | 1 | 2 | 23 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 9 | 6 | 8 | 2 | 8 | 6 | 10 | 0 | 0 | 24 | 0 | 0 | 0 | 16 | 2 | 0 | 2 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 3 | 7 | 9 | 6 | 4 | 5 | 2 | 0 | 0 | 25 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 9 | 5 | 1 | 3 | 0 | 6 | 9 | 5 | 10 | 17 | 3 | 10 | 5 | 9 | 4 | 0 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 4 | 2 | 3 | 8 | 7 | 7 | 1 | 1 | 7 | 1 | 1 | 27 | 0 | 1 | 1 | 1 | 1 | 2 | 1 | 7 |103 | 17 | 1 | 2 | 1 | 1 | 8 | 9 | 7 | 9 | 9 | 6 | 8 | 6 | 3 | 1 | 28 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 5 | 4 | 9 | 10 | 6 | 5 | 3 |??? |??? | 3 | 29 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 4 | 5 | 7 | 7 | 11 | 8 | 9 | 2 | 2 | 30 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 | 6 | 7 | 10 | 12 | 7 | 7 | 7 | 4 | 2 | 1 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 0 | 0 | 2 | 0 | 3 | 8 |??? |??? |??? |??? |??? |??? |??? |??? |??? | ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ Jul| 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 Jul| 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 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 30 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |Jun 01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 08 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 09 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 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 | 1 | 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 | 0 | 13 | 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 | 0 | 0 | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 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 | 0 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |??? |??? | 0 | 29 |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? |??? | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |??? |??? |??? |??? |??? |??? |??? |??? |??? | ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ Jul| 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 ----------------------------------------------------------------------------- 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. I hope RMOJ will be helpful to radio observers, as well as all meteor observers. Hiroshi Ogawa 2024.08.10