April 2002 Radio Meteor Observation in Japan No.004 Observer : Minoru Ehara Location : Sayama, Saitama, Japan Frequency: 53.750 MHz Transmitter Location: Fukui-NCT at Sabae city (136.2 E, 35.9 N) HAM beacon (JA9YDB) for RMO (50 W CW, 53.7500 MHz) by JA9BOH Kimio Maegawa. No modulation except for identification Observing method: HROFFT software(by K.Okawa) Counting method: manual count 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 23 Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 ---+------------------------------------------------------------------------ 01| 9 13 10 12 12 7 7 10 9 17 15 12 NS -- -- -- -- -- -- -- 4 6 2 10 02| 9 9 14 15 9 10 11 7@13 -- -- -- -- -- -- -- -- -- -- -- NS 8 8 03| 5 12 11 11 9 11 15 12 16 @6 -- -- -- -- -- -- -- -- -- @3 5 @5 @8 @5 04| 8 @4 NS NS NS NS NS -- -- -- -- -- -- -- -- -- -- -- -- -- -- NS NS NS 05|NS NS NS NS NS NS NS NS -- -- -- -- -- -- -- -- -- -- NS NS NS NS NS NS 06|NS NS 7 16 8 14 11 @6 NS -- -- -- -- -- -- -- -- NS NS NS NS @2 NS @8 07|10 9 10 15 8 10 14 9 5 5 11 8 NS @6 6 NS -- -- -- -- @5 5 5 16 08| 8 11 14 6 16 13 @8 10 15 6 15 17 9 NS NS -- -- -- -- @5 5 4 0 9 09| 6 8 18 17 7 12 7 12 15 16 18 @6 12 7 8 8 3 5 0 0 3 6 2 4 10| 7 12 13 13 11 15 15 15 8 16 12 16 13 8 8 5 7 3 1 1 7 4 7 7 11| 7 13 18 11 13 12 9 15 19 15 18 16 16 8 11 4 0 3 2 @3 6 3 3 17 12|12 11 11 6 9 6 5 16 9 7 15 6 7 5 4 8 1 0 2 0 9 10 8 4 13|10 20 12 10 18 9 8 7 9 11 16 10 9 13 4 4 3 5 3 3 1 7 2 7 14|15 15 15 10 9 11 10 10 4 13 @5 @2 NS NS NS NS NS 1 2 2 2 7 6 4 15|11 16 13 12 18 9 10 7 22 9 7 9 NS NS NS NS NS NS NS @0 2 9 3 6 16| 9 5 12 6 14 4 9 11 NS 16 NS NS NS @8 NS NS 3 2 2 2 1 3 4 3 17| 6 13 8 7 12 11 9 11 18 12 14 12 13 14 13 9 5 6 3 2 4 2 3 NS 18|NS NS NS@11 8 14 6 15 -- -- -- -- -- -- -- -- -- -- -- -- -- -- @6 @0 19|@2 NS NS NS NS NS NS NS NS NS NS -- -- -- -- -- -- -- -- -- -- @1 5 13 20| 9 16 14 11 16 19 15 18 15 13 @5 NS@15 NS NS NS NS NS@10 5 2 5 -- -- 21|-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- @4 3 @6 NS@12 22|NS@12 17 8 15 18 16 14 16 21 24 10 18 19 5 6 -- -- @0 6 1 5 11 18 23|14 19 21 20 16 24 15 20 20 20 18 16 10 5 1 1 5 2 4 11 6 3 9 11 24| 9 14 16 8 10 14 20 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 25|-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- @6 3 6 4 3 6 8 26|12 13 14 15 9 14 15 24 15 19 17 24 16 14 6 5 5 3 4 @2 -- -- --@14 27|12 15 22 11 15 14 12@14 NS NS NS NS NS NS NS NS NS NS 2 4 11 8 9 13 28|12 2 14 13 12 16 8 17 11 NS NS NS NS NS NS NS NS NS @3 0 7 6 9 6 29| 8 17 12 14 18 15 15 16 10 14 NS NS NS NS NS NS NS NS @3 0 3 4 10 8 30| 7 13 10 8 15 15 24 11 19 15@20 18 16 9 13 10 3 5 5 5 1 6 4 9 ---+------------------------------------------------------------------------ Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 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 23 Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 ---+------------------------------------------------------------------------ 01| 1 02| 1 03| 04| 05| 06| 1 07| 1 1 08| 09| 1 1 10| 11| 1 1 12| 13| 1 14| 15| 16| 17| 18| 19| 20| 21| 22| 1 1 23| 1 24| 25| 26| 1 27| 1 1 1 28| 29| 30| 1 1 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 23 Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 Notes: --: lost counts because of high noise level or machine failure. @: Hourly rate estimated by effective observation time less than 60 min. NS: unknown type of noise IF: Contamination due to radio noise or interference ES: Contamination due to sporadic E opening JST =UT + 9 h --------------------------------------------- Observer: Toshihide Miayake Location: Tamano, Okayama, Japan 1133d 53' 38" E, 34d 29' 31"N Frequency: 53.750 MHz. Transmitter Location: Fukui-NCT at Sabae city (136.2 E, 35.9 N) HAM beacon (JA9YDB) for RMO (50 W CW, 53.7500 MHz) by JA9BOH Kimio Maegawa. No modulation except for identification Receiver: STANDARD VR-500 Observing method: HROFFT software (by K. Okawa) Counting method: manual count (using HROview software by M. Yamamoto) Total number of echoes Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 UT ---+-------------------------------------------------------------------------- 01|10 9 16 4 7 15 16 14 21@15@14 NS NS NS NS NS NS NS NS @5 6 7 9@13 02|14 13 20 20 16 20 20 13 16@13 NS NS NS NS NS NS NS NS NS 5 6 6 13 13 03| 5 7 12 15 12 18 16 17@27@14@23@18 @4@13 5 @4 IF IF IF @5 8 5 8@13 04@10 16 10 17 11 16 15 18 17 NS NS NS NS NS NS NS NS NS NS NS NS 12 15 6 05| 9 8 13 17 12 17 14 18@27 NS NS NS NS NS NS NS NS NS NS @4 12 10 16 17 06| 9 12 12 11 14 14 15 22@25@13 NS NS@19 13 7 3 9 8 2 6 12 11 17 11 07|10 16 18 24 9 15 26 26 18 13 11 16 NS NS NS NS NS NS NS@14 8 7 19 7 08|14 IF@23 13 6 21 19 24 8 13 NS NS NS NS NS NS NS NS @2 5 7 9 8 8 09|12 8 12 11 12 16 12@14 NS NS NS NS NS NS NS NS NS NS NS 7 9 NS@14 IF 10|IF@19 14 13 12 15 12 25 11@16@17 NS NS NS NS NS NS NS @2 8 7 12 17 11 11|11 18 15 8 25 21 13 18 17 15 12 16 11 19 10 3 5 6 7 11 12 17 18 18 12|18 18 17 19 21 17 18 20 NS NS NS NS NS NS NS NS NS NS NS 10 6 15 5@12 13@11 14 12 25 11 17 12@24 NS NS NS NS NS NS NS NS NS NS NS NS @7@18 10@16 14|15 15 17 16 12 15 10 18 19 NS NS NS NS NS NS NS NS NS @2 6 8 15 10 13 15|21 10 10 11 12 14 14 13 13@18@12 NS NS NS 9 3 4 7 3 8 11 24 15@21 16@28 12 15 6 22 24 27 26 22@18 12 NS NS NS NS NS NS NS 3 7 10 10 15 19 17@18 17 15 19 22 17 20 15 26 17 12 8 14@15 NS NS NS NS NS NS NS NS NS 18 18|IF NS NS NS@19 NS@19 NS NS NS NS NS NS NS NS NS NS NS 6 11 5 11 15 14 19| 9 16 15 10 15 25 26@23 NS NS NS NS NS NS NS NS NS NS NS NS 11 6 13 18 20|22 15 10 18 11@19 18 18 23@20 NS NS NS NS NS NS NS NS @2 7 5 9 14 14 21|17 21 23 26 16 22 28 22 31 18 19 11 11 14 14 12 12 10 5 @7@19 IF 18 25 22@23 23 22 19 25 18 23 22@20 NS NS NS NS NS NS NS NS NS 5 7 8 16 13 17 23|24 14 12 20 28 32 38 29 22 17@10 NS NS@12 12 10 8 6 8 6 7 16 18 13 24|13 14 13 15 17 30 32 19 25 19 12@19 NS NS NS NS NS @8 6 10 10 IF IF IF 25@14@12 18@23 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS@14 9 19 26|15 14 20 14 20 15 18@26 19 NS NS NS NS NS NS NS NS NS NS 7 17 7 8 14 27| 8@17 15 17 22 28 20 30 19 NS NS NS NS NS NS NS NS NS 6 7 12 17 11 16 28|IF@10 13 13 18 28 22 23 20 29 10 14@16 NS NS NS @5 6 8 6 4 9 10 12 29|10 14 9 11 19 14 19 23 20 15 NS NS NS NS NS NS @8 9 12 5 9 10 12 16 30|IF@11 16 17 25 25 16 9 25 NS NS NS NS NS NS NS NS 1 5 11 6 14 14 14 ---+-------------------------------------------------------------------------- Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 UT Echoes longer than 20 seconds Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 UT ---+-------------------------------------------------------------------------- 01| 02| 1 03| 1 1 1 04| 1 05| 06| 1 07| 08| 09| 1 10| 11| 2 1 1 12| 1 13| 2 1 14| 15| 1 16| 17| 18| 1 19| 1 20| 21| 1 22| 1 23| 1 1 24| 1 1 1 1 25| 26| 1 1 27| 1 28| 2 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 Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 UT Notes: --: lost counts because of high noise level or machine failure. @: Hourly rate estimated by effective observation time less than 60 min. NS: unknown type of noise IF: Contamination due to radio noise or interference ES: Contamination due to sporadic E opening JST =UT + 9 h -------------------------------- Observer : Takashi Usui Location : Itabashi, Tokyo, Japan (39.7N, 140.1E) Frequency: 53.750 MHz Transmitter Location: Fukui-NCT at Sabae city (139.72 E, 35.75 N) HAM beacon (JA9YDB) for RMO (50 W CW, 53.7500 MHz) by JA9BOH Kimio Maegawa. No modulation except for identification Antenna : TS670 USB Receiver: Whip 6mH Observing method: HROFFT software(by K.Okawa) Counting method: manual count - the number of total echo - Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 ---+----------------------------------------------------------------------- 1| 1 2 0 1 2 3 3 0 0 1 2 2 2 @0 @4 1 0 1 1 2 @0 1 @0 @1 2| 1 1 4 1 1 3 4 0 1 2 0 0 0 0 1 0 0 0 3 0 1 1 2 1 3| 0 0 2 1 3 2 4 1 1 0 1 1 0 1 0 1 @0 3 1 1 0 1 1 0 4| 3 1 1 3 0 1 1 2 3 2 0 1 0 0 0 0 2 0 0 1 0 1 3 4 5| 1 0 0 2 3 0 1 0 0 1 1 0 4 3 0 0 0 1 0 0 0 0 2 1 6| 3 0 0 0 0 0 1 2 2 2 3 1 1 1 1 0 0 0 3 2 0 1 2 1 7| 0 1 1 1 0 1 1 3 1 0 6 0 0 3 0 0 0 1 0 0 0 0 1 2 8| 1 0 1 1 2 3 3 1 2 0 2 1 0 0 0 0 0 0 0 @0 2 0 0 0 9| 1 2 2 2 0 1 2 1 2 1 0 0 0 0 0 1 0 1 0 0 0 @0 IF IF 10|IF 1 0 2 1 0 1 4 2 1 0 0 1 4 1 0 0 0 0 1 1 1 5 0 11| 1 5 3 1 0 5 1 2 2 9 2 1 1 0 1 0 0 4 1 0 1 0 1 2 12| 4 3 1 1 0 3 0 4 1 1 2 2 0 0 2 1 1 0 0 0 2 0 3 1 13| 0 5 3 1 1 2 3 1 1 0 3 1 0 @1 @3 @3 0 2 2 1 1 0 0 0 14| 0 2 2 0 2 0 3 3 1 0 0 0 1 0 0 0 1 0 1 2 0 0 1 0 15| 3 1 0 2 3 2 3 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 IF @2 16| 3 0 2 1 2 1 0 1 5 1 1 2 0 0 1 4 0 0 0 1 0 1 0 0 17|@0 0 0 0 1 2 2 3 5 2 1 0 1 3 0 3 0 0 0 0 1 2 @0 IF 18|@2 0 2 4 1 1 0 2 0 1 2 2 1 0 0 1 1 0 0 0 3 0 0 0 19| 1 2 2 3 1 1 0 3 1 0 0 0 1 1 0 1 0 0 0 0 0 0 1 1 20| 2 0 0 2 0 7 1 0 1 0 0 0 0 0 0 0 @0 0 1 0 1 0 4 1 21| 1 0 0 0 0 1 4 4 1 0 0 1 @2 @0 -- -- -- -- -- -- -- -- -- -- 22|-- -- -- -- -- -- @4 2 1 0 1 1 0 1 0 0 0 1 0 1 0 0 1 4 23| 3 4 4 0 0 5 3 2 0 2 2 1 0 0 0 0 0 0 0 4 3 0 4 0 24| 0 3 2 1 1 1 2 2 4 2 1 0 0 0 0 4 0 1 1 2 0 @2 IF IF 25| 0 8 1 2 1 1 0 0 1 0 0 1 0 0 @2 0 1 1 1 1 0 0 0 1 26| 0 @1 2 0 1 3 2 0 1 2 1 1 3 1 1 0 0 2 5 1 1 @0 1 3 27| 1 1 5 2 3 5 6 6 5 2 0 0 2 0 1 2 0 1 0 2 1 1 1 4 28| 1 0 2 0 2 2 2 1 2 0 0 0 1 2 1 1 0 0 0 1 1 0 0 0 29| 1 0 3 0 2 2 1 2 0 2 0 0 0 0 @0 @0 @0 1 0 0 0 0 1 0 30| 2 0 2 1 1 1 0 1 1 0 0 0 1 0 2 1 @3 @0 1 0 0 1 2 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 23 Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 - the number of Long echo (more than 20sec)- Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 ---+----------------------------------------------------------------------- 1| 1 2| 1 3| 4| 5| 1 6| 7| 8| 9| 10| 11| 12| 13| 14| 15| 16| 17| 18| 19| 20| 21| 22| 23| 24| 25| 26| 27| 1 28| 29| 30| ---+----------------------------------------------------------------------- Apr|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Apr|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 note: --: lost counts because of high noise level or machine failure. @: Hourly rate estimated by effective observation time less than 60 min. n: 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. April 2002 Hiroshi Ogawa 2002.05.21