Februey 2002 Radio Meteor Observation in Japan No.002 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 Feb|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Feb|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 UT ---+-------------------------------------------------------------------------- 1 |@8 @8 NS 16 15 12 5 13 NS NS -- -- -- -- -- -- -- NS -- NS 3 @5 6 7 2 | 6 8 16 19 10 12 12 14 @8 NS -- -- -- -- -- -- -- NS 4 4 5 4 6 5 3 |15 13 14 14 25 23 18 16@16 -- -- -- -- -- -- -- -- NS @2 5 2 5 4 13 4 |10 13 15 17 14 4 15 13 24 NS NS -- -- -- -- -- -- -- -- -- @5 @3 @1 @7 5 |13 9 9 11 9 10 14 14@18 @8 NS NS 4 10 -- -- -- -- 2 @6 10 6 11 -- 6 | 4 11 14 11 7 14 6 14 8 20 NS -- -- -- -- -- -- -- @4 2 2 5 @8 5 7 |@8 8 11 19 11 14 14 12 17 11@16 13@13 10 @8 3 6 4 4 1 5 4 @7@14 8 | 4 17 9 11 9 15 10 8 @8@14 NS -- -- -- -- -- -- -- @5 2 @8 @7 NS NS 9 |10 17 11 10 16 16 13 15 @6 NS -- -- -- -- -- -- -- -- -- -- NS NS NS NS 0 |NS NS NS NS NS NS NS NS -- -- -- -- -- -- -- -- -- -- NS NS NS NS NS @5 11 |10 15 14 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- NS NS @4 14 -- 12 |@8 14 9 18 7 15 6 15 NS NS NS -- -- -- -- -- -- -- -- -- NS NS NS NS 13 | 7 15 17 14 11 8 9@11 -- -- -- -- -- -- -- -- -- NS NS NS NS NS NS NS 14 |NS NS NS NS NS NS NS -- -- -- -- -- -- -- -- -- -- -- -- -- NS NS NS @5 15 | 8 12 8 NS NS NS NS NS -- -- -- -- -- -- -- -- -- -- -- -- -- -- NS NS 16 |NS NS NS NS NS 5 11 @8 NS -- -- -- -- -- -- -- -- -- -- -- NS IF NS 9 17 | 7 9 9 9 13 16 9 21@18 -- -- -- -- -- -- -- -- -- -- -- -- @5 @0 @2 18 | 6 6 14 17 14 9 15 6 11 17 15 -- -- -- -- -- -- -- -- -- NS NS NS -- 19 |NS 10 12 15 17 13 9 NS -- -- -- -- -- -- -- -- -- -- NS NS NS NS NS NS 20 | 7 11 13 11 14 14 @9 NS -- -- -- -- -- -- -- -- -- -- -- -- -- NS NS @0 21 @11 12 9 17 10 7 10 @4 11 NS NS -- -- -- -- -- -- -- -- -- -- -- NS@16 22 | 7 11 17 15 11 12 12 12@11 NS -- -- -- -- -- -- -- -- -- -- NS -- NS NS 23 |NS NS NS NS NS NS NS NS -- -- -- -- -- -- -- -- -- -- -- -- -- NS NS NS 24 |NS NS NS NS NS NS NS NS -- -- -- -- -- -- -- -- -- -- -- NS NS @1 @5 6 25 | 9 10 14 7 9 13 8@17 NS -- -- -- -- -- -- -- -- -- -- -- -- 4@12 -- 26 |@7 11 11 12 7 9 11 12 9 12@12 -- -- -- -- -- -- -- -- @2 1 5 5 @6 27 | 6 9 9@16 10 12 8 9 9@19 NS NS -- -- -- -- -- -- -- NS 7 10 10 7 28 | 8 11 8 16 8 11 10 16 11 11 12 5 13 6@10 3 5 6 2 1 @6 @1 NS 11 ---+-------------------------------------------------------------------------- Feb|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Feb|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 Feb|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Feb|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 UT ---+-------------------------------------------------------------------------- 1 | 2 | 3 | 1 1 1 4 | 1 1 5 | 1 6 | 7 | 1 8 | 1 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 1 17 | 1 18 | 19 | 1 20 | 21 | 22 | 23 | 24 | 25 | 26 | 1 27 | 28 | 1 1 ---+-------------------------------------------------------------------------- Feb|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Feb|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: 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 Feb|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Feb|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 UT ---+-------------------------------------------------------------------------- 1 @12 13 20 13 13 20 19 18 29 19 15 24 NS NS NS NS NS NS 8 8 15 7 13@12 2 |15 9 14 15 17 22 22 19@30@11@25 15 13 9 9 8 6 1 6 7 4 14 13 16 3 |12 9 12 10 14 12 18 12 18 19 39 15 10 11 9 10 4 NS NS NS NS IF 7 9 4 |14 11 9 16 18 19 20 26 22 NS NS NS NS NS NS NS NS NS 6 5 7 8 11 11 5 |14 14 6 20 15 10 9 10 14 18@11@15 11 @9 5 14 @8 7 7 5 @6 IF @9 10 6 | 9 13 13 9 16 9 25 16 10 15 11 20 7 12@12 @7 NS NS 12 5@10@12@10 9 7 |10 11 11 14 18 18 12 19 18 11 27 16 NS NS NS NS NS NS NS NS @8 13 10 16 8 |14 15 9 14 14 17 20 15 14 18@15 18 NS NS NS NS NS NS @6 4 14 IF @3 IF 9 | 9 6 17 6 15 24 17 13 16@17@18 NS NS NS NS NS NS NS NS NS NS NS IF IF 10 |NS IF@16 18 19 12 21 19 16@17 NS NS NS NS NS NS NS NS IF IF IF IF 9@17 11 | 5 @8 IF 10 12 17 12 20 12 21@14 17@19@16 NS NS NS NS NS NS NS TA IF IF 12 @15 NS @8 @8 14 10 18 21 12 23@15 NS NS NS NS NS NS NS NS @8@10 12 13 8 13 | 5 5 12 14 14 14 19 16 12 17 NS NS NS NS NS NS @2 3 8 6 18@12 9 11 14 | 6 6 11 11 17 12 19 6 11 10@16 NS NS NS@12 NS 4 5 NS 8 11 NS IF IF 15 | 8 13 6 8 13 21 11 21 18 20 15 NS NS NS NS NS NS NS NS@10 9 9@20 16 16 |13 @9 18 10 16 16 19 15 13 19 25 12@16 NS NS NS NS NS @3 7 10@14@11 9 17 | 5 8 16 14 12 11 13 16 21@19 15@18 NS 12 8 7 4 9 8 11 5 10 14 15 18 | 5 9 15 15 9 18 18 18 18 NS NS NS NS NS NS NS NS NS NS NS NS @9 7 9 19 |10 9 16 14 12 16 34 19 24 NS NS@22 NS NS NS NS NS NS NS NS IF IF IF IF 20 |IF 9 12 13 10 15 16 16 17@28 NS NS NS NS NS NS NS NS NS @4 @7 @5 10 4 21 | 8 10 9 19 11 15@19 19 25@21 12@16 15 NS NS NS NS NS@10 @8@16 @9 @5 NS 22 |NS@15 20 11 7 11 24 26 19 14 13 19 8 7 10 9 4 3 5 6 6 @8@12 8 23 | 7 12 9 13 12 16 16 14 17 21 15 NS NS NS NS NS NS NS NS NS NS@10@13 11 24 |15 11 17 17 9 11 15 16 15@21 15@14 NS NS @4 @7 6 3 6 @6@13 IF IF IF 25 |IF 10 9 7 16 11 17 12@12@16 20 NS NS NS NS NS NS NS@12 7 5 IF IF IF 26 | 9 13 10 9 11 13 15 15 21@10 9 15 13 14 10 4 5 @8 4 14 4 12 7 10 27 | 7 13 9 8 18 18 11 21@22 11 12 10 8@16 6 9 @8 NS NS 3 13 13 12 15 28 |14 15 11 16 15 12 14 30@18 18 10 12 14 6 9 4 5 6 5 9 7 14 11 9 ---+-------------------------------------------------------------------------- Feb|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Feb|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 Feb|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Feb|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 UT ---+-------------------------------------------------------------------------- 1 | 2 | 1 1 3 | 1 1 4 | 5 | 1 1 1 6 | 2 1 7 | 8 | 1 9 | 10 | 1 11 | 12 | 1 13 | 1 1 14 | 1 15 | 16 | 1 17 | 1 18 | 19 | 1 20 | 1 21 | 1 22 | 1 23 | 1 2 24 | 1 25 | 26 | 1 1 27 | 28 | ---+-------------------------------------------------------------------------- Feb|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Feb|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: Garfield Tsao (BM2EQB) Location: LonTan Observatory LonTan, TauYan, Taiwan R.O.C. (121 14'37" E, 24 52'54" N by GPS) Frequency: 50.0169 MHz USB mode 3 kHz width. Antenna: Comet made 50 MHz Yagi HB 4 element (gain 10.3 dBi) astronomical azimuth 225 deg (=NE), elevation 7 deg. Transmitter: MIYAZAKI University Japan, USB mode, 50 W (24 hours), distance about 1125 km from Lon Tan. Receiver: ICOM R-75 all band receiver Sensitivity: 0.25 uV for 10 dB S/N for USB mode Observing method: the beacon 1000 Hz voice signal (by FFTDSP) is received by a low frequency filter (1000 Hz)and fed into the D/A converter and computer in real time. Data sampling system: using an 8 bits A/D card to PC/AT and Qbasic program with 1/8 second sampling interval to store the> 1.0 s reflections. 2002 | 08h 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 LT Feb | 00h 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 UT -----+---------------------------------------------------------------------------- 02/02| * * * * 15 18 13 09 06 05 08 07 09 10 12 21 23 24 25 31 25 27 37 36 02/03| 24 in in 18 15 18 * * * * * * * * * * * * * * * * * * 02/09| * * * * * * * * * * * * * * * * * * * * * * * 09 02/10| 04 06 14 21 23 13 18 19 12 14 28 22 19 15 * * * * * * * * * * 02/13| * * * 18 32 16 13 07 10 12 09 * * * * * * 11 16 21 12 14 19 34 02/14| 26 39 36 29 31 26 * * * * * * * * * * * * * * * * * * 02/16| * * * * * * 06 07 05 10 07 10 07 05 08 10 19 18 20 40 27 37 36 32 02/17| 37 41 40 30 39 * * * * * * * * * * * * * * * * * * * 02/23| * * * * * * * * 06 04 05 06 14 11 10 07 13 08 14 12 09 19 18 20 02/24| 38 17 20 26 21 19 18 * * * * * * * * * * * * * * * * * -----+---------------------------------------------------------------------------- 2002 | 08h 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 LT Feb | 00h 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 UT Notes: . "IN=(local) artificial interference. . "E" = sporadic E layer mode of reflection. ?.suspect peak for shower or Es *.Date and Time system is in accordance with UT system and the time difference is 8hour from Taiwan (UT+8). ECHO STRENGTH LIST DATE(LT) TIME(LT) STRENGTH(dBi) CONTINUED TIME(sec) ------------------------------------------------------------------------------ 02/02 14h52m 20 02/03 00h17m 20 00h33m 60 04h50m 20 05h30m 20 13h57m 20 02/10 04h03m 20 12h09m 20 02/13 12h20m 20 60 14h18m 20 18h19m 20 02/14 07h21m 60 10h24m 20 12h40m 20 02/17 03h31m 20 05h42m 20 06h15m 20 07h49m 60 08h16m 20 08h55m 20 09h10m 20 09h23m 20 10h31m 20 10h34m 120 11h17m 20 12h09m 20 12h43m 20 02/24 02h29m 20 05h40m 120 07h54m 20 08h53m 20 ----------------------------------------------------------------------------- *.no strength of data means the strength is under 20dBi ----------------------------------------------------------------------------- About the RMOJ RMOJ is the result of radio meteor observation in Japan. Also, this inclued the report which is sent me. As world wide bulletin, RMOB is published by Christian Steyaert. This bulletin is sent him every month. In Japan, radio meteor observation become major observation in meteor observation by developing low- priced receiver and usuful auto observational software (HROFFT by Mr.Ohkawa). There are 70 observational sites in Japan. Japanese main used frequency is 53.750MHz (50W) at Fukui-NCT(by Mr.Kimio Maegawa). FM-Observation is very difficult in Japan because mini-FM staions increase recently. I hope RMOJ become helpful between radio observers and all meteor observers. February 2002 Hiroshi Ogawa 2002.03.11