January 2002 Radio Meteor Observation in Japan No.001 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 - the number of total echo - Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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| 8 7 8@18 15 17 16@18 16 NS@16 NS -- -- -- -- -- -- -- -- NS 9 @6 8 02| 4 7 13 10 23 21 18 17 19 15 @8 NS -- -- -- -- -- @0 @5 NS NS NS @3 NS 03|NS NS NS 15 18 19 21@22 NS -- -- -- -- -- -- -- -- NS NS NS NS 8 6 11 04|17 26 44 84 85 68 36 37 -- -- -- -- -- -- -- -- -- -- NS 5 9 @3 6 @8 05| 7 5 10 13 14 16 13 16 10@16 NS 19 10 7 NS NS -- @0 NS @3 3 NS 7 7 06| 8 12@40 15 15 14 14 26 NS NS NS NS -- -- -- -- -- NS NS NS NS NS NS NS 07|NS @8 17 18 22 11 21 13 -- -- -- -- -- -- -- -- -- -- -- @2 6 6 7 9 08|15 7 11 17 14 14 6 7 20 32@20 -- -- -- -- -- -- -- NS NS NS NS NS NS 09|NS NS NS 9 15 13 17 19@15 NS NS -- -- -- -- -- -- -- -- -- -- -- @2 9 10|12 10 9 17 15 17 14 11 @8 NS NS -- -- -- -- -- -- -- -- -- -- -- @2 6 11| 5 8 12 13 19 12 11@10 @4 NS NS -- -- -- -- -- -- -- -- -- -- NS NS NS 12|NS NS NS 17 13 23@12 -- -- -- -- -- -- -- -- -- -- -- -- -- NS NS NS@12 13|@6 13 12 19 20 14 22 23@19 11 18@13 NS -- -- -- -- -- -- -- -- NS NS @9 14|@5 14 17 14 10 9 13 6 18@10 NS -- -- -- -- -- -- -- -- 1 2 2 7 2 15| 9 16 11 18 16 13 11 15 13 19 18 @8 -- -- -- -- -- -- -- -- -- 10 10 3 16| 8 15 14 18 14 20 14 @8 13 28 14 15 12@18@12 4 11@10 @5 2 @5 -- -- -- 17|-- --@16 13 10 14 21 8 11 10 13 11 13 11 6 @4 3 1 1 1 3 6 3 6 18| 8 14 16 22 16 10 9 15 13@14 14@12 -- -- -- -- -- -- NS -- @4 11 11 @6 19| 8 12 22 14 11 19 19 16 15 NS NS -- -- -- -- -- -- NS @6 4 5 7 7 8 20| 6 8 16 17 21 17 16 21 28 24@18 NS 17@12 NS -- -- -- 2 4 5 4 2 6 21| 1 4 6 9 17 10 10 13@16 20 NS -- -- -- -- -- -- @0 @8 @0 IF @5 NS 4 22|@7@14 14 12 11 7 11 7 7@15 -- -- -- -- -- -- -- -- -- NS -- NS NS NS 23|11 18 12 13 14 12 14 13 18 NS -- -- -- -- -- -- -- -- -- -- -- NS @4 @3 24| 7 NS NS NS NS 9@10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- NS NS 25|@0 13 12 7 12 18 8 12 13 @5 -- -- -- -- -- -- -- NS -- -- -- -- NS NS 26|NS 10 NS NS 16 16 16 @6 12 5 12 NS NS -- -- -- -- @0 1 1 2 4 0 5 27| 5 10 14 15 11 7 17 19 9 21 13 12 6 9 11 3 5 -- -- -- NS NS NS NS 28|NS NS NS NS NS NS NS NS NS -- -- -- -- -- -- -- -- -- -- -- -- -- 3 6 29| 9 15 17 9 11 23 13 14 @8 NS -- -- -- -- -- -- -- -- -- NS NS -- NS NS 30|@4 11 15 15 11 12 7 6 -- -- -- -- -- -- -- -- -- -- 3 3 @3 @4 11 -- 31|11 13 15 22 14 21 15 14 @0 NS -- -- -- -- -- -- -- -- NS -- -- NS NS NS ---+----------------------------------------------------------------------- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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 - the number of Long echo (more than 20sec)- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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| 1 02| 1 03| 2 04| 1 05| 2 1 06| 1 1 1 07| 1 08| 1 1 09| 1 10| 1 11| 1 12| 1 13| 1 14| 15| 16| 1 17| 18| 1 19| 1 20| 1 21| 1 22| 23| 24| 25| 26| 1 27| 1 28| 29| 30| 31| 1 1 ---+----------------------------------------------------------------------- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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 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 Minoru Ehara -------------------------------------------------------------------------- Observer : Hironobu Shida Location : Akita, Akita, Japan (39.7N, 140.1E) 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 Antenna : ITEC HRO-RX1 Receiver: 5ele Observing method: HROFFT software(by K.Okawa) Counting method: manual count - the number of total echo - Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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|18 29 34 36 44 39 44 27 20 18 22 IF@51 29 10 18 22 24 7 19 21 19 21 27 02|32 21 30 54 60 49 53 54 37 63 64 45@44@27 IF 25 19 13 20 17 12 30 21 28 03|25 34 37 32 38 38 45 57 38 44 56 77 IF IF@54 50 18 39 19 13 14 13 21 49 04|52 84 99112113 77108159107@68 86 63 54 37 40 19 10@14 12 17 15 12 14 14 05|10 12 21 27 34 25 18 23 26 40 35 18 15@21@12 ES 4 6 3 9 9 9 10 5 06| 6 22 25 23 17 13 24 22 43 35 39 46 16 15 10 2 1 3 3 8 9 9 9 -- 07|14 15 12 46 36 20 18 34 18 15 17 23 28 24 13 13 10 7 7 10 17 19 16 @0 ---+----------------------------------------------------------------------- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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 - the number of Long echo (more than 20sec)- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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| 1 1 1 1 02| 1 1 4 1 1 03| 2 2 3 3 1 1 1 04| 3 4 4 1 1 6 3 4 3 3 2 1 2 05| 1 1 1 1 1 06| 1 1 1 1 1 07| 1 1 1 1 2 1 ---+----------------------------------------------------------------------- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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 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 Hironobu Shida -------------------------------------------------------------------------- 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 - Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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|10 12 8 9 10 16 12 21 17 13 15 32 14 20 7 5 3 8 6 3 6 9 9 17 2|18 15 9 21192 50 14 15 21@21 IF IF 9 @6 --@12 7 4 12 6 6 6 11 9 3|12 15 15 23 17 22 20 25 32 38 27 52 IF IF 14 18 10 7 4 3 8@16@22 15 4|13 17 23 19 18 14 7 7 9 9 8 10 6 2 11 3 0 2 2 4 6 2 0 1 5| 4 7 3 9 2 6 9 5 9 7 2 8 6 12 3 6 3 4 1 5 0 1 9 13 6| 6 9 9 6 7 5 9 9 9 10 8 5 7 6 7 5 7 1 1 2 4 2 3 5 7| 7 5 8 11 6 6 11 6 6 3 8 9 4 6 5 4 1 @2 3 4 @4 7 6 3 8| 4 4 7 4 6 5 5 5 9 12 5 2 10 4 @0 @2 3 @2 2 3 7 2 10 12 9| 2 7 2 5 8 4 5 14 7@34 -- 10 6 2 5 2 3 1 3 4 1 @4 @6 6 10| 3 2 7 12 5 3 4 10 7 5 11 9 1 3 1 4 1 0 @2 2 4 @0 @3 5 11| 4 3 3 7 13 10 7 @7 11 @3 -- @0 6 2 2 0 0 1 3 3 2 5 4 2 12|@1 2 3 7 3 9 5 7 6 4 11 5 1 3 4 0 2 3 0 3 3 0 7 6 13| 6 @3 8 5 10 3 13 10 5 @7 12 11 @2 5 2 6 2 2 2 @3 @3 -- -- -- 14|-- -- --@21 --@16@12 12 7 3 9 13 2 6 4 3 3 4 2 2 3 2 4 6 15| 3 2@10 8 7 4 9 6 11 3 3 @7@14 5 @2 3 2 @6 5 3 5 3 3 1 16| 4 7 4 4 8 11 6 3 5 7 6 @4 @4 6 6 4 2 3 2 3 @4 2 0 8 17| 9 3 3 11 6 2 11 @8 7 5 7 5 7 11 6 3 @3 0 3 3 7 3 @3 4 18| 4@12 0 9 5 4 @6@12 @6 9@19 11 12 3 5 4 -- -- @3 1 @3 7 4 4 19| 4 4 14 3 8 4 9 9 @4 7 3 4 6 @0 -- -- -- -- -- -- -- --@24 -- 20| 4 3 11 7 8 6 6 8 15 9 8 7 11 0@12 -- -- -- @3 -- -- -- -- -- 21|-- @6 16 5 5 3 4 7 7 6 10 8 7 1 @6 -- -- 4 1 0 3 3 @6 6 22| 6 3 5 6 6 9 5 8 6 4 7 5 2 0 0 1 2 0 1 5 4 2 0 3 23|@0 4 8 4 7 6 6@10 10@14 -- -- @2 1 2 3 1 3 1 4 2 @2 @4 2 24| 9 2 @7 10 6 7 6 @6 15 2 6 5 6 1 1 4 2 4 3 --@12@15 -- -- 25|@8 @4 4 8 4 12 @4 9 9 8 4 @2 3 5 2 1 5 @2 1 @2 5 @6 @7 1 26| 5 5 6 6 6 3 6 @3 @7 @8 19 8 @1 @8 3 @2 2 @1 2 1 @1 3 @6 7 27| 5 8 10 5 9 6@12 18 12@20 @9@18 @6 12 5 -- -- -- -- -- -- -- --@10 28|12 18 8 11 23 7@20@24 --@21@18 @9 8 5 5 6 1 @0@12 @6 --@12 @4@18 29|17 4 @9 10@16@18@12 -- -- -- -- --@14 3 @1 @6 @3 @6 5 @8 -- -- @9 -- 30|13 @6@19 8 @9 15 @9 -- -- --@24@12 4 1 3 0 2 @4 -- --@30 -- -- -- 31@15 14 15 19 16 16@22 -- -- -- -- --@14 @1 @1 8 @7 @1 @0 -- -- -- -- -- ---+----------------------------------------------------------------------- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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 - the number of Long echo (more than 20sec)- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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| 1 1 2| 1 3| 4| 5| 1 6| 1 7| 8| 1 9| 10| 1 11| 12| 13| 1 14| 15| 16| 1 17| 18| 1 19| 20| 21| 22| 23| 24| 25| 26| 27| 28| 29| 1 30| 31| ---+----------------------------------------------------------------------- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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 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 Takashi Usui ------------------------------------------------------------------------ Observer : T.Kondo Location : Imari, Saga, Japan (33.28N, 129.90E) 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 - Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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|-- -- -- -- -- -- -- -- -- -- -- -- -- -- 12 9 4 7 @8 7 5 8 13 14 02| 4 12 9 14 9 5@14 13 17 19 17 18 18 17 12 12 7 10 8 14 7 12 12 12 03|10 8 19 17 18 9 17 23 18 30 33 31 24 17 16 24 19 7 7 13 15 8 10 15 04|38 47 58 59 56 36 43 38 58 64 49 32 27 29 19 10 9 4 9 3 6 8 9 9 05|12 13 12 16 15 26 25 26 33 28 27@18 13 16 12 12 9 2 7 8 13 6 14 11 06|21 21 17 21 27 15 10 16 30 30 29 27 17 10 9 7 3 ---+----------------------------------------------------------------------- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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 - the number of Long echo (more than 20sec)- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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| 1 1 02| 1 1 1 1 2 1 1 1 2 1 1 03| 1 1 3 1 4 3 1 3 1 1 1 04| 2 4 6 10 5 5 6 11 23 23 12 5 1 6 3 1 05| 2 1 2 2 1 2 1 1 1 2 1 1 1 06| 1 1 1 1 1 1 1 3 3 2 1 ---+----------------------------------------------------------------------- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 JST Jan|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 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 T.Kondo ---------------------------------------------------------------------- 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: PCR-1000 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. Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 LT Jan|16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 UT ---+----------------------------------------------------------------------- 05| * * * * 11 7 9 10 6 20 17 5 7 7 6 5 19 23 21 16 19 23 20 27 06|19 19 22 15 11 9 12 * * * * * * * * * * * * * * * * * 12| * * * * * * 10 13 9 6 7 10 9 10 16 14 29 26 38 40 32 35 37 47 13|43 45 51 47 48 26 27 * * * * * * * * * * * * * * * * * 19| * * * * 3 44 21 18 14 12 14 21 13 12 14 20 38 40 65 73 25 46 33 32 20| E IN E E E 16 * * * * * * * * * * * * * * * * * * 26| * * * * * * 20 19 20 16 10 * * * * *45 36 45 28 34 43 30 34 27|31 21 27 31 17 * * * * * * * * * * * * * * * * * * * ---+----------------------------------------------------------------------- Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 LT Jan|16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 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 ------------------------------------------------------------------------------ 1/5 17h04m 20 60s 1/6 03h37m 20 1/13 00h07m 20 07h37m 20 08h18m 20 08h55m 60s 10h50m 20 13h26m 20 14h10m 20 1/19 18h29m 20 19h10m 20 1/20 00h02m 20 00h04m 20 01h44m 20 02h14m 20 02h31m 20 03h01m 20 60s big echo! 03h24m 20 03h29m 20 03h36m 60s 05h46m 20 06h42m 120s 1/26 14h44m 20 17h48m 20 1/27 00h00m 20 01h04m 20 02h57m 30 big echo! 03h33m 20 60s 05h40m 60s 07h03m 20 07h42m 120s ----------------------------------------------------------------------------- *.no strength of data means the strength is under 20dBi Garfield Tsao ----------------------------------------------------------------------------- Observer: Hiroshi Ogawa Location: Misato Observatory (Wakayama-pref. Japan) 135.40 E, 34.13 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 Antenna: original dipole (height: 1 m, to level, element: west-east) Receiver: AOR AR8000 USB-Mode Observing method: HROFFT software (by K. Okawa) Counting method: manual count (using HROview software by M. Yamamoto) Total number of echoes 2002 Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Jan|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|44 42 61 62 76 64 51 58 52 34 38 42 21 27 31 13 19 11 13 12 18 16 23 34 2|27 38 48 43 61 81 89 83 59 37 47 IF\20 IF IF\10 15 10 21 17 22 15 31 44 3|40 35 39 46 72 87 76 74 75 59 59 52\38\38 42 24 19 11 10 11 22 30 33 48 4|79109129160186193232229193159104 71 72 33 42 27 22 11 14 13 12 18 28 33 5|42 49 51 42 51\49 49 51 46 38 49 39 44 33 35 13 10 10 11 6 18 10 13 25 6|28 45 47 52 42 52 67 53 48 40 38 35 21 15 15 15 -- -- 9 11 19 10 11 20 ---+-------------------------------------------------------------------------- Jan|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 Jan|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 2002 Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Jan|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| 1 1 2| 1 3| 1 1 2 1 4| 2 3 4 1 2 7 5 7 5 2 4 1 5| 1 6| 1 2 1 ---+-------------------------------------------------------------------------- Jan|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 Jan|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST Notes: --: lost counts because of high noise level or machine failure. \: Hourly rate estimated by effective observation time less than 60 min. IF: Contamination due to radio noise or interference Es: Contamination due to sporadic E opening n: unknown form of noise LT = JST = UT + 9 h Hiroshi Ogawa ----------------------------------------------------------------------------- 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. January 2002 Hiroshi Ogawa 2002.02.24