From: Christian Steyaert To: gnomeck@concentric.net ; steyaert@vvs.be ; 100101.734@compuserve.com <100101.734@compuserve.com>; petro@stsci.edu ; mjc@astro1.bnsc.rl.ac.uk ; a0198616@htisrv.dseg.ti.com ; mike_ray@cix.compulink.co.uk ; dicicco@skypub.com ; 73042.1022@compuserve.com <73042.1022@compuserve.com>; Paul.Vauterin@oma.be ; Pierre.DeGroote@rug.ac.be ; sedberg@jpl.nasa.gov ; 72632.1427@compuserve.com <72632.1427@compuserve.com>; tomrice@netcom.com ; schoenmaker@nfra.nl ; w0ler@n0jcf.com ; w0pn@amsat.org ; yamada@ysc.go.jp ; cpouls@iaehv.nl ; richardson@digitalexp.com ; kaze@tcp-ip.or.jp ; c-shimo@mtd.biglobe.ne.jp ; tsmithers@cix.compulink.co.uk ; andromed@ATM.Dal.Ca ; kuneth@netway.at ; 73073.1464@compuserve.com <73073.1464@compuserve.com>; peter.keller@tek.com ; 73320.3575@compuserve.com <73320.3575@compuserve.com>; markr@phx.mcd.mot.com ; 100422.3176@compuserve.com <100422.3176@compuserve.com>; cn1506@coastalnet.com ; riggsjim@ac.net ; azagni@micronet.it ; 102670.1206@compuserve.com <102670.1206@compuserve.com>; vbook@vbook.com ; cake@kcsheld.demon.co.uk ; oh5iy@sci.fi ; markku.nissinen@pp.inet.fi ; kmaegawa@fukui-nct.ac.jp ; jrybak@mesa5.Mesa.Colorado.EDU ; us0284@uniserv.uniplan.it ; psmc@ix.netcom.com ; gany@iaehv.nl ; awaya@isd.ricoh.co.jp ; 73642.1620@compuserve.com <73642.1620@compuserve.com>; len@ironhorse.source.co.uk ; pjdyer3@juno.com ; 100102.615@compuserve.com <100102.615@compuserve.com>; HAAG@if.ufrgs.br ; lenz@injersey.com ; wh6ef@pixi.com ; rlthompson@thezone.net ; jrmeyer@pop.erols.com ; moises@asterix.fi.upm.es ; gap@ilk.de ; jiangxph@public.wh.hb.cn ; eb4gia@mad.servicom.es ; kimhay@adan.kingston.net ; EA3BTZ@mx3.redestb.es ; KA8SFP@AOL.COM ; gofig@advtransport.prestel.co.uk ; Kb8tej1@AOL.COM ; epbus@wxs.nl ; okamoto@jim.sugiyama-u.ac.jp ; ea4eoz@mad.servicom.es ; millerfe@tde.com ; hochheimer@CRT.hoechst.com ; savan@prcko.psc.ac.yu ; normd@directcon.net ; Giovanni.Sostero@elettra.trieste.it ; peter.cleall@gecm.com ; FJonckers@Interconnect.be ; JPedroncel@AOL.COM ; gvozdev@onego.ru ; bkeane@indigo.ie ; wimzanstra@freemail.nl ; almedal@online.no ; g1smd@amsat.org ; daveh@lanminds.com ; rmeyer@cue.satnet.net ; Ulrich.Sperberg@t-online.de ; odehjas@geocities.com ; H.Franzrahe@amarok.prima.de ; Harrison.Steph@worldnet.att.net ; luigi.maniero@iname.com ; hendrik.vandenbruaene@erta.be ; achilles@freemail.c3.hu ; hoffman@werewolf.net ; luisiana@ctv.es Subject: Radio Meteor Obs. Bull. Jan 1999 Date: Sunday, February 07, 1999 3:44 PM Radio Meteor Observation Bulletin No. 66 February 1999 1. FORWARD SCATTER METEOR OBSERVATIONS Observer: Enric Fraile Algeciras Location: Paseo Bonanova, 8 Barcelona (02 07'E, 41 24' N) Frequency: 48.24715 MHz. Transmitter Location: still working to identify, possibly South German C2, 100 kW, horizontal polarisation) Antenna: 6-element Yagi 617-6B, 14 dBd gain. astronomical azimuth 215 deg (=NE), elevation 0 deg. Antenna: Six element Yagi 617-6B, 14 dBi gain, horizontal polariz. Azimuth 200 deg (NE), elevation 20 deg Receiver: home made converter 20 dB gain, 1 dB noise and Kenwood TS-830S. 10 dB attenuator in the receiver to reduce direct reception Sensitivity: 0.25 uV for 10 dB S/N Observing method: the audio signal of the video carrier is received using a narrow CW filter (500 Hz) and fed into the PC in real time. Data sampling system: using a super 14 bits A/D card to PC/XT and "Data Capture" software with 1 second/18 sampling interval to store all the > 0.5 s reflections. | Jan 1999 UT | 4 5 6 7 8 9 10 11 12 13 14 15 16 25 26 27 28 ----+---------------------------------------------------------------------- 0 | 17 8 3 7 2 5 0 2 2 2 1 1 1 1 0 1 | 9 10 6 10 3 11 4 0 3 1 1 0 1 0 0 2 | 12 8 9 2 8 16 4 0 1 0 4 1 4 1 0 3 | 13 10 5 1 6 11 2 3 1 1 0 0 1 1 1 4 | 6 14 10 4 4 14 1 2 2 1 0 1 4 0 2 5 | 10 5 3 11 7 17 1 4 5 3 0 0 5 1 0 6 | 15 3 5 5 6 14 0 3 4 3 2 2 4 1 0 7 | 9 9 8 11 7 15 1 1 3 3 0 4 2 2 8 | 13 15 8 18 7 12 1 3 7 2 2 1 6 0 1 9 | 11 12 16 15 2 22 2 1 2 1 1 5 2 0 1 10 | 12 12 9 7 15 27 1 2 2 3 2 1 0 0 6 11 | 9 8 5 3 8 24 6 2 3 2 2 2 1 1 0 12 | 13 9 27 4 5 8 9 3 4 3 5 1 0 0 0 13 | 39 9 22 3 5 3 3 2 0 0 1 0 3 0 0 14 | 15 6 36 8 3 15 10 1 0 2 1 4 1 0 0 15 | 20 5 8 7 9 4 8 0 0 0 0 1 1 0 0 16 | 19 3 13 6 2 13 4 3 8 1 0 0 1 1 0 17 | 5 2 15 1 3 2 0 0 2 0 1 1 0 1 0 18 | 4 2 3 0 5 1 0 1 0 2 0 0 1 19 | 3 4 7 3 0 8 3 1 1 0 1 1 1 1 1 0 20 | 9 12 10 13 5 5 1 0 1 0 0 0 1 0 0 0 21 | 7 4 11 5 4 7 5 0 0 2 0 2 4 1 0 0 22 | 8 6 9 3 4 8 2 4 1 1 1 0 4 1 1 23 | 14 7 12 6 2 13 1 2 2 0 3 0 0 ----+---------------------------------------------------------------------- UT | 4 5 6 7 8 9 10 11 12 13 14 15 16 25 26 27 28 | Jan 1999 Note: . the system was adjusted to record the overdense reflections and minimize the possible C4 TV interference. The system is installed in its definitive classroom in the University. Also there are two students working to improve the data sampling system. Enric Fraile Algeciras --------------------------------------------------------------------------- Observer: Michael Boschat Location: Halifax, Canada (63 36'W, 44 39'N, 58 meters above sea level) Listening Frequency: 83.25 MHz Receiver: Icom R-10 Antenna : resonant dipole Antenna Direction: Horizontally polarized with lobes in E-W plane, elev 0 deg Filter : high-Q (Q at least 300) bandpass filter between antenna & receiver. Listening Mode: AM Recording method: listening by ear January 1999 Number of meteors heard in one hour interval 1999| UT Jan | 09 10 11 12 13 14 15 16 17 18 19 ----+------------------------------------------- 1 | - 7 - - 10 15 9 7 - - - 2 | - - - - - - - - - 4 2 3 | - - - - 14 13 26 15 17 - - 4 | - - - - - - - 5 - - - 5 | - - - - - - - - - - - 6 | - - - - - 9 7 - - - - 20 | - - - - - - 5 - - - - ----+------------------------------------------- Jan | 09 10 11 12 13 14 15 16 17 18 19 1999| UT Notes: . no corrections for radiant position made to the counts. . (-) means no observations made. Mike Boschat --------------------------------------------------------------------------- Observer: Maurice De Meyere Location: Deurle, Belgium (3 37' E, 51 00' N) Frequency: 66.51 MHz Transmitter locations (all stations of more than 10 kW): 66.35 MHz, Klaipeda, Lithuania 12 kW, 05h00-22h00 66.47 Viesintos Lithuania 12 05h00-22h00 66.62 Budapest Hungary 100 24hrs 66.68 Valmiera Latvia 20 04h30-22h00 Antenna: crossed Yagi, 4 elements, astronomical azimuth 270 deg (= E), elevation 27 deg. Antenna amplifier: 25 dB max level 90 dBmuV Receiver: commercial, Progresson 447A, TESLA (Bratislava) The receiver was calibrated with a Marconi TF2008 signal generator. Sensitivity: 5 muV (modulation frequency 1000 Hz, frequency sweep 38 kHz) at (S+N)/N = 20 dB. SWR of antenna alone at 66.5 MHz: 1.4/1 (good to very good), measured with MFJ/259P SWR analyzer (HF-VHF 1.8 MHz to 170 MHz) on Sep 28, 1998. Observing method: automated setup, 150 samples/second, 8 bit resolution. [Time and details of all individual meteor reflections are stored on file in the University of Ghent format (Prometeos), and are available for further analysis. Reduction software for DOS and Windows available]. January 1999 Raw counts of reflections with a duration of at least 0.027 s during one hour interval starting at UT: Jan | UT 1999 | 21h 22 23 00 01 02 03 04 05 06 07 ------+------------------------------------------------------- 1- 2 | 3 9 17 13 22 18 20 25 28 20 22 2- 3 | 9 19 19 21 15 15 22 23 22 24 17 3- 4 | 109 118 85 98 148 126 96 15 15 24 10 4- 5 | 19 22 25 15 22 12 26 12 20 15 15 5- 6 | 7 14 29 34 10 24 20 19 22 47 37 6- 7 | 4 16 16 6 28 10 12 7 15 7 9 7- 8 | 1 4 4 11 9 13 32 16 18 20 19 8- 9 | 14 8 7 5 14 16 16 7 7 13 9 18-19 | 119? 69 145? 99 65 64 59 33 58 97 ? 19-20 | 51 49 85 90 70 52 50 60 52 62 62 20-21 | 51 129? ? 121 73 53 60 47 37 98 130? 21-22 | ? ? ? ? 62 54 63 67 ? ? ? 22-23 | ? 167? ? 145? 63 58 71 54 131? ? ? 23-24 | ? 164? 58 104 66 67 46 70 45 46 62 24-25 | ? 132 144 94 50 62 60 51 67 88 76 25-26 | 130? 89 109 73 54 64 49 52 43 83 90 26-27 | 82 42 92 45 59 39 31 36 29 55 85 27-28 | 61 51 68 40 52 62 56 49 46 84 90 28-29 | 64 55 54 74 47 41 46 37 70 155? ? 29-30 | 81 64 140 ? 61 48 61 56 Es Es Es 30-31 | 75 75 111 126? 45 65 63 49 45 124? 49 31- 1 | ------+------------------------------------------------------- 1999 | 21h 22 23 00 01 02 03 04 05 06 07 Jan | UT Additional Quadrantids observations: Jan | UT 1999 | 18h 19 20 ------+--------------- 3- 4 | 37 54 89 4- 5 | 3 6 12 Raw counts of reflections with a duration of at least 1.000 s during one hour interval starting at UT: Jan | UT 1999 | 21h 22 23 00 01 02 03 04 05 06 07 ------+------------------------------------------------------ 1- 2 | 0 2* 3 0 0 1 1 2 2 3 3 2- 3 | 3* 4* 4* 3 5* 0 2 5* 3 8* 5* 3- 4 | 26* 33 17 20* 23 27* 20* 0 0 6* 1 4- 5 | 1 0 4 0 1 2 2 2 0 2 2 5- 6 | 0 0 9* 4 5* 2 0 1 10* 12 17* 6- 7 | 0 2 3 0 5 0 3* 1 3 2* 0 7- 8 | 0 1* 0 3* 2* 1 6 0 4* 5* 2 8- 9 | 1 3* 0 0 2 1 3 0 0 5* 1 18-19 | 31? 13 28? 16 5 5 2 0 5 9 75? 19-20 | 8 10* 20* 18 7 2 4 5 2 12 12 20-21 | 13* 14 86* 20 9 6 3 3 3 14 39? 21-22 | ? ? ? ? 5 6 7 10 ? ? ? 22-23 | ?* 64? ?* 45* 6 5 10 5 46? ? ? 23-24 | ?* 69? 4 10 9 14* 4 6 2 4 15* 24-25 | ?* 46* 50* 20* 4 4 4 7 11 17 19* 25-26 | 32? 19* 22* 14 7 7 5 1 4 12 13 26-27 | 12 8 17 9 6 4 3 1 3 8 20* 27-28 | 11 11* 16* 5 7 11 9 4 1 3 19* 28-29 | 7 5 5 12 8 3 6 2 9 36? ?* 29-30 | 18* 22 26 ?* 10 5 5 4 Es Es Es 30-31 | 10 18* 41* 29? 4 11 7 1 4 33? 4 31- 1 | ------+------------------------------------------------------ 1999 | 21h 22 23 00 01 02 03 04 05 06 07 Jan | UT Additional Quadrantids observations: Jan | UT 1999 | 18h 19 20 ------+--------------- 3- 4 | 10 10* 24* 4- 5 | 0 0 1 Notes: . outdoor hardware revision between Jan 9 and 18 . ? probably affected by sporadic-E, tropo, direct reception. . * warning for relative high number of long duration reflections, an indication for potential stream activity. . some stations might have stopped broadcasting on this frequency . local time = UT + 1 hours Maurice De Meyere ---------------------------------------------------------------------- Location: Astronomical Observatory, University of Ghent, Belgium (3 42' 32" E, 51 01' 25" N) Antenna (2x): 4 elements horizontal Yagi, pointed East, elevation= 20 deg Antenna amplifier: 10 dB gain Frequency: (1)=66.29 MHz (signal) and (2)=65.3 MHz (interference control) Receiver (2x): modified commercial FM receiver Data acquisition: 12 bits PC-based A/D convertor, 250 Hz sampling rate Interference rejection: dual setup: receiver (1) tuned at distant transmitter, receiver (2) tuned at empty frequency. Anti-coincidence measurement rejects registration of broadbanded spurious signals (lightning, computers, ignition motors, etc). Further information: see WWW page (additional info + observational data) http://allserv.rug.ac.be/~hdejongh/astro/meteor/meteor.html Data format: results are shown as total reflection time, expressed as a percentage. The actual number shows 10 times this value. When no figure is shown, the equipment was either out of service, or results could have been affected by interference, sporadic-E. ------------------------------------------------------------- | Jan 1999 | 10x % reflec. time | horiz: day | vert: time UT| ---------------------------------------------------------------- | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ---+------------------------------------------------------------ 0 | 15 21 44 300 36 29 26 28 24 19 13 30 26 23 1 | 29 28 32 362 28 48 34 30 16 29 19 39 23 25 2 | 31 41 41 289 39 36 34 43 29 30 14 37 26 35 3 | 49 34 49 144 52 49 41 72 36 27 38 34 31 50 4 | 44 48 52 95 76 60 51 38 44 44 38 42 55 41 5 | 53 42 55 59 60 26 46 43 37 22 24 38 36 38 6 | 43 77 55 76 32 50 71 69 63 24 22 56 66 48 7 | 59 48 77 182 43 49 40 37 31 21 31 30 30 50 8 | 46 55 78 175 45 21 58 52 44 12 18 32 25 33 9 | 40 55 105 178 28 8 33 41 31 24 5 37 7 14 10 | 46 34 121 154 53 3 15 24 27 42 12 43 14 25 11 | 31 46 145 196 40 33 16 38 37 17 15 40 18 30 12 | 41 58 250 101 32 19 14 26 18 28 11 11 15 17 13 | 35 34 250 70 20 17 8 8 16 18 6 22 12 15 14 | 27 28 207 49 81 21 20 5 14 9 8 5 12 11 15 | 20 17 208 32 11 17 22 4 14 8 6 4 5 7 16 | 14 27 126 23 13 30 18 16 8 9 4 9 11 24 17 | 22 32 101 17 7 39 11 10 14 10 8 7 6 17 18 | 20 24 118 12 22 20 17 13 12 12 13 12 11 16 19 | 24 23 160 23 30 21 15 19 14 11 12 11 18 16 20 | 29 35 203 21 42 52 26 26 20 13 18 21 22 31 21 | 36 27 169 26 25 47 24 32 26 18 15 19 30 27 22 | 30 34 176 48 22 32 31 23 26 12 26 14 24 32 23 | 24 27 167 32 19 21 25 32 14 8 28 1 15 19 20 ---+------------------------------------------------------------ | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 -------------------------------------------------------------- | Jan 1999 | 10x % reflec. time | horiz: day | vert: time UT | -------------------------------------------------------------------- | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 ---+---------------------------------------------------------------- 0 | 27 22 28 36 42 17 25 23 25 30 31 23 20 26 14 35 1 | 32 27 38 41 57 24 35 30 31 39 34 19 24 22 33 30 2 | 25 33 29 32 33 34 34 27 36 42 30 14 15 24 19 50 3 | 40 35 38 47 36 36 44 37 29 41 30 17 30 29 29 45 4 | 52 52 36 33 49 57 56 47 37 51 37 23 35 63 29 37 5 | 49 48 35 41 31 41 32 25 38 49 40 25 32 30 14 25 6 | 75 36 60 42 30 45 38 34 21 37 27 30 49 33 24 79 7 | 67 56 62 42 49 24 43 37 72 69 42 37 37 26 16 27 8 | 55 45 32 25 40 43 48 60 30 45 19 42 27 27 29 51 9 | 42 80 24 25 35 28 14 55 36 31 27 33 22 15 23 48 10 | 32 44 18 41 38 32 14 61 33 17 20 33 21 15 14 34 11 | 40 29 22 34 44 19 37 41 32 25 25 13 17 17 24 24 12 | 25 31 12 26 31 14 26 25 20 27 5 15 6 14 9 25 13 | 18 23 10 23 10 19 9 20 16 13 7 14 13 7 10 22 14 | 21 16 8 7 13 8 9 10 9 18 2 5 9 12 12 13 15 | 13 8 5 29 6 4 5 10 8 11 11 2 16 6 8 9 16 | 12 8 11 8 17 10 9 6 7 6 17 4 7 12 6 9 17 | 13 10 12 6 9 15 9 7 4 9 5 9 4 10 7 11 18 | 16 16 13 15 14 13 18 10 11 9 10 8 6 8 7 15 19 | 20 18 23 21 16 18 15 20 25 14 16 15 15 9 14 10 20 | 23 30 20 20 18 21 14 37 20 21 19 27 17 18 18 24 21 | 74 15 31 40 30 31 19 30 18 27 24 27 21 23 32 28 22 | 27 23 27 29 20 38 18 30 20 30 21 24 26 19 22 17 23 | 33 19 42 24 27 23 14 25 18 25 20 15 21 19 22 15 ---+---------------------------------------------------------------- | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Notes: . nice Quadrantids activity . observations of January 12 were lost due to power cut (snow storm) Pierre De Groote --------------------------------------------------------------------------- Observer: Will Kelsey Location: Santa Maria, CA. USA (120 26' 9" W, 34 55' 58" N) Frequency: 98.5 and 107.9 Mhz Transmitter Location: Sacramento, CA. KRAK FM, 50 kW at 362 km. Antenna: Yagi FM 6 element. Heading North Receiver: Sangean 803 A Observing Method: Listening to audio recording. Underdense/Overdense Scale: Overdense: 1.0 second or more Underdense: less than 1.0 second Estimated Signal Amplitude (ESA): 1 to 99 maximum Interference (INT): Lo Med Hi Each observed hour is 60 minutes, exactly. ___________________________________________________ January Over- Under- 1999 hr-UT dense dense Total --------------------------------------------------- 1 QUA 1300-1400 6 31 37 2 QUA 1200-1300 12 20 32 2 QUA 1300-1400 19 24 43 3 QUA 1300-1400 21 70 91 3 QUA 1400-1500 22 38 60 4 QUA 1300-1400 20 27 47 5 QUA 1300-1400 10 29 39 6 QUA 1300-1400 11 30 41 7 QUA 1300-1400 4 11 15 8 DCA 1130-1230 12 13 25 9 DCA 1130-1230 4 19 23 10 DCA 1130-1230 7 11 18 11 DCA 1130-1230 7 18 25 12 DCA 1130-1230 4 12 16 13 DCA 1130-1230 2 12 14 14 DCA 1130-1230 5 8 13 15 DCA 1130-1230 7 19 26 16 DCA 1130-1230 7 23 30 17 DCA 1130-1230 2 7 9 18 DCA 1130-1230 4 13 17 19 DCH 1130-1230 5 19 24 20 DCH 1130-1230 6 13 19 21 DCH 1130-1230 6 23 29 22 1430-1530 6 11 17 23 1100-1200 3 13 16 24 1100-1200 0 9 9 88.9 MHz 25 1300-1400 3 7 10 88.9 MHz 26 1300-1400 6 8 14 107.9 MHz 27 1300-1400 7 14 21 " " 28 1300-1400 3 20 23 " " 29 1300-1400 1 8 9 " " 30 1300-1400 4 14 18 " " 31 1300-1400 2 6 8 107.9 MHz --------------------------------------------------- 1999 hr-UT Over- Under- Total January dense dense Notes: . activity period of streams with radiant at 45 deg elevation: QUA: Quadrantids DCA: Delta Cancrids DCH: Delta Cancrids & Alpha Hydrids Will Kelsey --------------------------------------------------------------------------- Observer: Werfried Kuneth Location: Ferndorf, Austria (13 37' E, 46 45' N) Antenna: 2 element Yagi, direction southeast, no elevation at 1m height. Receiver: IC-706 at 53.76065 MHz, CW-R mode, 500 Hz CW filter, fast AGC. Transmitters: 1) 30 kW TV video carrier from Bari, Italy, distance 700 km, direction south and 2) a 30 kW TV video carrier from Sicilia, Italy, distance 900 km, south. The total echo power of both transmitters is processed into same 40 Hz virtual receiver channel. Observing method: automatic setup using FFTDSP42t software by AF9Y to record the audio signal. 20 channels of 2 Hz width are used for meteor identification, another channel is used for automatic interference rejection. Sampling interval: one 4096 point FFT every 0.5 seconds. The meteor counts below are corrected for a full hour observing time. If the recording duration is 20-40 minutes, a dot is shown after the value, to show the reduced accuracy. Results for less than 20 min. observing time are excluded. Counts of reflections longer than 6.5 seconds, assumed to be overdense. | Jan 1999 UT| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ---+--------------------------------------------------------------- 0| 2 4 3 30 8 3 6 3 3 5 0 0 0 2 1 2 1| 5 5 6 39 3 2 5 3 1 4 2 1 2 2 2 6 2| 8 3 6 53 3 8 3 7 3 3 3 1 6 4 4 2 3| 1 6 13 60 4 6 2 7 1 5 5 1 4 3 2 3 4| 5 2 3 59 6 5 5 2 8 2 1 6 4 3 4 3 5| 2 7 7 31 3 7 6 2 4 4 2 1 3 2 0 4 6| 5 5 7 21 1 8 2 3 3 7 2 2 6 1 3 4 7| 2 7 7 17 6 4 2 1 3 3 0 3 5 2 2 6 8| 7 10 12 17 6 6 1 6 1 2 4 4 8 2 2 3 9| 4 14 14 19 7 7 4 6 3 4 4 4 4 7 4 7 10| 1 12 15 34 11 9 7 9 2 4 7 4 7 6 10 4 11| 7 5 26 33 13 9 13 4 2 1 2 6 9 0. 5. 4 12| 6 6 25 21 7 6 6 7 8 2 1 2 4 3 6 8 13| 3 5 21 10 1 2 5 4 1 4 0 0 2 5 1 2 14| 3 3 15 5 1 1 2 2 1 3 1 2 0 2 4 15| 3 0 11 1 2 0 1 0 0 2 0 1 0 0 1 16| 0 2 5 5 1 1 0 0 0 0 0 1 1 2 17| 1 1 5 0 0 1 0 0 2 0 1 3 1 0 18| 1 0 4 3 0 1 0 0 0 0 0 0 0 3 19| 1 1 3 1 1 0 0 0 0 1 2 0 0 1 20| 1 0 3 0 2 0. 0 1 2 0 2 0 0 3 1 21| 1 1 3 1 3 3 1 1 1 4 4 1 2 1 0 5 22| 2 0 5 1 2 2 2 1 2 6 2 1 2 4 7 0 23| 1 1 14 4 1 4 5 0 3 1 1 0 0 1 3 1 ---+--------------------------------------------------------------- UT| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | Jan 1999 | Jan 1999 UT| 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 ---+----------------------------------------------------------- 0| 0 7 1 1 2 4 2 1 0 1 2 0 0 2 3 1| 1 4 1 5 7 1 3 8 3 2 1 2 4 1 3 2| 2 4 8 2 2 2 6 4 4 0 1 4 2 3 3 3| 2 4 6 2 4 2 7 4 4 2 1 2 0 2 11 4| 3 1 3 2 2 4 1 0 2 4 2 1 5 3 6 5| 5 2 8 1 2 6 1 2 3 2 3 4 3 2 6 6| 7 5 2 6 3 3 6 2 3 3 6 4 2 5 8 7| 1 4 4 1 4 6 2 5 7 1 2 3 8. 2 7 8| 3 10 5 4 3 6 8 0 5 6 2 5 3 4 9| 3 13 6 3 3 3 0 6 3 6 4 4 6 9 10| 4 13 4 10. 7 6 5. 7 5 5 3 6 4 4 11| 7 8 5 1 8 7 2. 3 5 6 2 7 11. 4 12| 5 5 4 2 3 3 2 4 3 5 3 2 1 13| 6 4 10 3 5 4 2 3 4 1 6 3 14| 2 3 1 2 1 1 1 0 2 2 0 0. 0 15| 0. 3 3 0 1 1 2 1 1 1 0 0. 0 1 0 16| 3 0 1 0 0 0 0 0 0 0. 0 1 0 1 17| 2 2 0 1 0 1 0 1 0 0 2 1 18| 2 0. 0 0 0 1 0 1 1 0 0 0 0. 2 19| 1 0 1 2 0 3 0 1 2 0 2 1 1 3 20| 0 5 1 2 0 2 0 0 2 0 0 3 2 21| 2 1 1 5 1 0 0 1 2 0 0 2. 2 4 22| 2 2 4 4 4 2 1 1 2 1 1 0 0 2 0 23| 1 4 1 2 1 2 4 2 2 3 6 6. 1 1 6 ---+----------------------------------------------------------- UT| 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | Jan 1999 Propagation overview for January 1999 E : sporadic-E or E-layer propagation F : FAI (field aligned irregularity) - : propagation only via meteor echoes. (blank) : no data available | Jan 1999 UT| 1 2 3 4 5 6 7 8 910111213141516171819202122232425262728293031 ---+-------------------------------------------------------------- 0| - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - - 1| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4| - - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - 5| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7| - - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - 8| - - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - 9| - - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - 10| - - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - 11| - - - - - - - - - - - - - - - - - - - - - - - - - - - - E E - 12| - - - - - - - - - - - - - - - - - - E - - - - - - - - - E E - 13| - - - - - - - - - - - - - - - - - - E - - - - - - - - E E E - 14| - - - - - - - - - - - - - - - - - - E - - - - - - - - E E - - 15| - - - - - - - - - - - - - - - - - - - - - - - - - - E - - - 16| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17| - - - - - - - - - - - - - - - - - - - - - - - - - - - 18| - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19| - - - - - - F - - - - - - - - - - - - - - - - - - - - - 20| - - - - - - - - - - - - - - - - - - - - - - - - - - E - - 21| - - - - - - - - - - - - - - - - - - - - - - - - - - - E E - - 22| - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - - 23| - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - - ---+-------------------------------------------------------------- UT| 1 2 3 4 5 6 7 8 910111213141516171819202122232425262728293031 | Jan 1999 Notes: . The Quadrantids showed up as usual, with the peak here on Jan 4 . An unusual outburst of daytime meteors occurred on Jan 18, with preceding activity on Jan. 16-17. The activity curve might suggest a radiant near alpha=225, delta=+30 (+/-15 deg). Werfried Kuneth --------------------------------------------------------------------------- Observer: R.B. Minton Location: Raton, NM (approx 104 24' W, 36 54' N) Receiver: 92.9 MHz Full system description to follow in a future issue Total hourly counts (interference manually deleted) January 1999 Jan| UT 1999| 0h 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 ----+------------------------------------------------------------------------ 1 | 21 13 23 9 10 12 9 9 8 6 6 7 4 3 9 11 15 22 24 15 66 10 12 31 2 | 31 11 11 9 74 83111 83 53 80 50 41 45 14 19 14 18 16 20 13 19 10 9 19 3 | 37 32 36 17 13 6 8 10 13 18 20 26 28 23 17 15 28 28 39 42 39 50 36 58 4 | 39 29 24 7 9 13 20 26 33 41 25 19 15 13 15 11 17 14 13 12 10 7 6 25 5 | 35 20 16 9 5 9 9 5 9 4 3 12 7 10 9 6 7 4 5 2 9 3 5 34 6 | 30 21 9 4 5 2 7 2 8 9 4 11 8 10 18 9 5 12 10 15 3 6 8 15 7 | 35 16 13 12 2 13 6 5 4 9 8 4 4 3 6 8 17 7 12 7 9 12 14 38 8 | 31 25 8 4 10 4 8 9 9 3 5 12 10 6 9 13 11 15 10 0 2 0 6 7 9 | 14 18 15 8 8 3 10 8 9 4 6 11 8 9 11 10 12 14 7 7 5 8 3 10 10 | 3 16 4 3 2 2 4 0 1 3 1 2 6 4 1 7 8 8 9 4 5 1 4 4 11 | 7 4 17 14 3 4 3 2 6 2 3 4 4 1 3 6 7 12 5 2 2 3 5 3 12 | 4 1 2 1 3 3 4 6 1 3 3 5 4 4 5 9 13 11 16 7 3 3 4 13 13 | 11 6 4 1 4 4 4 3 7 5 10 1 1 3 2 8 9 8 10 3 10 4 6 8 14 | 8 8 8 4 9 8 1 1 4 3 3 7 8 4 3 7 3 7 14 9 5 6 4 8 15 | 0 3 7 4 8 4 4 6 3 5 6 1 2 0 7 5 7 13 7 7 8 2 4 7 16 | 3 3 6 0 0 0 0 1 2 1 5 2 2 6 5 5 7 11 10 8 6 2 2 1 17 | 0 0 1 7 0 0 0 0 0 2 1 6 6 1 1 0 4 0 0 0 4 4 3 5 18 | 5 1 3 4 5 2 5 1 3 4 3 2 1 5 3 16 11 1 12 10 7 6 6 7 19 | 9 4 13 9 5 5 6 2 4 3 3 3 5 5 4 28 15 12 11 5 9 6 2 3 20 | 1 2 4 2 2 2 0 1 0 0 1 2 1 0 6 8 10 22 9 2 4 4 5 7 21 | 4 3 8 5 2 5 3 1 1 5 5 6 3 4 8 12 16 7 15 7 3 6 5 6 22 | 10 3 4 5 5 7 2 2 2 47 6 4 6 0 5 3 8 19 12 4 8 10 3 3 23 | 5 4 2 8 5 7 2 1 3 3 5 1 0 3 3 3 7 9 8 ----+------------------------------------------------------------------------ 1999| 0h 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Jan| UT Signal duration distribution for the period Jan 9, 18h UT to Jan 23, 18h UT: Duration (s) Number < 0.1 542 0.1 to 0.3 447 0.3 to 1 303 1 to 3 234 3 to 10 128 10 to 30 6 > 30 0 R.B. Minton --------------------------------------------------------------------------- Observer: Sadao Okamoto Location: Damine Meteor Observatory, Japan (137.53 E, 35.07 N) Transmitter: HAM beacon (JA9YDB) for RMO (50 W CW, 53.7500 MHz) by JA9BOH Kimio Maegawa. No modulation except for identification. Antenna: 2 element Cross Yagi 4 dBi aiming to Zenith. Omni-directional in azimuth and elevation above 15 deg elevation. Location: Fukui-NCT at Sabae city (136.2 E, 35.9 N) At present time about 10 observers are listing for Kimio Maegawa's 53.75 MHz beacon. Receiver: IC575 Antenna: 2 element Yagi, pointed to the zenith. Observing method: FFTDSP software, manual count. Hourly echoes over 10 dB SNR 1999 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 14UT ---+-------------------------------------------------------------------------- 01|22 34 45 44 43 30 36 21 23 15 13 18 10 10 7 5 2 7 6 6 12 23 20@20 02|29 37 36 43 50 58 56 45 30 43 41 29 27 18 14@10 9 8 5 3 20 21 23@21 03|29 36 44 40 62 48 47 64 43 42 25 21 27 15 14 5 9 9 3 12 4 14 23@31 04|42 67125106144181226199177115104109@99 62 35 n n 6 4 14 12 15 19 -- 05|27 38 52 50 64 52 48 45 39 34 20 41 22 19 n n 4 6 7 6 8 21 28@29 06|26 27 40 36 34 46 41 36 42 20 25 28 22 n n n n 10 8 9 19 12 14@19 07|15 26 41 38 51 45 40 45 46 30 30 19 15 16 15 14 @7 3 2 11 10 13 19@24 08|28 26 37 52 43 50 52 40 48 34 31 39 29 29 21 12 5 8 9 8 16 15 23@12 09|27 40 43 50 49 39 43 44 41 43 21 28 27 16 23@28 9 6 15 9 19 26 29 -- 10|46 36 61 44 57 71 42 55 43@45 f f f f f f f f f f f f f f 11| f f f f f f f f f f f f f f f f f f f f f f f f 12| f f f f f f f f f f 34 29 31 21 17 14 8 6 2 15 11 15 27@22 13|25 33 43 50 38 48 36 36 29 22 28 30 28@24 18 13 n n 8 6 14 32 25@14 14|21 36 43 57 42 36 51 42 36 21 25 28 16 18 6 7 10 9 6 7 20 16 29@24 15|26 34 30 46 65 54 44 32 39 28 39@36 37 23 17 10 19 12 2 9 13 22 32 -- 16|41 45 48 40 53 60 52 29 28 24 27 25 29 26 17 9 8 12 6 6 13 25 20@23 17|34 37 45 21 41 45 43 29 19 21 22 23 n n n@10 7 6 4 6 21 25 37@20 18|30 38 37 51 43 58 50 38 36 33@30@19 22 13 13 3 @6 7 6 10 12 20 26@24 19|30 27 41 38 48 38 36 26 29 32 28 24 28 21 n n n n n 7 18 21 17@22 20|31 23 30 44 52 37 38 28 19 22 25 32 28 11 12 8 6 3 6 14 8 16 16@20 21|26 17 24 44 39 39 43 41 30 23 n 20 18 8 8 1 6 4 10 11 9 19 29@21 22|22 24 27 44 46 41 56 49 33 19 12 17 27 17 15 9 8 9 7 8 10 15 22@18 23|18 37 33 40 32 29 24 29 31 31 28@24 27 22 17 7 8 9 9 6 15 14 23 -- 24|24 34 24 36 26 38 29 34 25 22 26 30 23 10 12 12 7 6 5 12 11 13 20@22 25|27 35 26 28 35 26 27 17 31 29 29 35 16 8 12 12@10 6 6 12 11 16 23@18 26|24 24 35 31 30 31 36 34 21 27 20 17 16 16 12 7 6 n 7 5 14 16 21@24 27|26 37 33 42 41 30 30 37 20 14 17 14 16 19 14 @8 @5 n n 7 10 16 33@25 28|28 31 32 40 42 38 37 18 23 16 13@17 17 13 9 5 7 4 2 6 8 16 29@18 29|21 29 35 17 36 24 29 35 25 32 30 26 29 16 13 12 8 9 7 3 14 26 17@12 30|25 25 18 16 13 18 28 27 12 n n n n n 4 3 2 -- 1 5 17 15 21@24 31|29 33 43 37 28 35 39 40 28 25 27 17 13@11 1 n n 7 8 10 10 19 22@28 ---+------------------------------------------------------------------------- - 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 1999 Echoes with duration > 5 s 1999 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 ---+-------------------------------------------------------------------------- 01| 1 5 7 11 5 4 2 1 2 1 1 2 1 02| 1 2 3 7 8 2 5 6 1 1 5 3 1 1 1 1 1 1 1 03| 1 6 2 5 7 5 10 4 4 2 2 2 1 1 5 04| 1 14 26 37 55 68 71117 83 51 49 46@48 13 3 1 2 2 -- 05| 2 6 9 3 10 4 8 6 1 4 2 1 2 1 1 06| 1 2 4 2 6 2 5 4 2 2 2 1 07| 1 2 3 10 11 5 7 9 5 5 1 1 1 1 1 1 1 08| 2 2 4 2 6 9 5 10 3 3 5 3 2 1 1 09| 1 3 2 2 5 4 3 5 2 1 1 2 3 2 10| 4 4 3 1 5 6 2 4 4 3 f f f f f f f f f f f f f f 11| f f f f f f f f f f f f f f f f f f f f f f f f 12| f f f f f f f f f f 1 1 1 13| 3 3 2 3 3 1 1 1 1 2 2 1 1 1 1 14| 1 2 2 1 1 3 1 3 2 3 15| 3 2 1 5 2 2 4 2 3 @6 1 1 2 16| 2 2 1 1 1 6 1 1 4 1 2 3 1 2 1 1 1 17| 2 2 1 2 3 1 1 1 18| 1 3 7 3 2 2 4 1 1 1 19| 2 1 2 3 7 4 4 5 1 2 1 2 1 20| 1 7 4 4 4 5 1 2 1 3 2 1 21| 2 4 4 6 2 4 3 1 3 1 2 1 1 1 1 22| 2 1 2 6 5 2 9 5 4 1 1 1 1 1 1 2 23| 1 4 2 1 3 1 3 1 2 2 1 4 1 1 1 24| 1 1 5 2 1 1 5 2 1 1 2 25| 1 2 3 1 1 1 1 2 1 2 1 1 1 26| 1 2 1 3 1 2 2 2 1 1 1 27| 2 2 3 3 3 5 3 2 28| 2 2 2 4 1 1 1 29| 2 3 6 3 2 3 1 1 1 5 1 1 30| 1 1 1 4 31| 1 1 3 5 4 2 1 5 2 ---+-------------------------------------------------------------------------- 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 1999 Daily rate of long echoes (T > 20 s) 1999 Jan 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 --------------------------------------------------------------------- Count 1 5 2 30 3 3 4 5 1 f f (1) 3 1 5 Jan 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 -------------------------------------------------------------------------- Count 2 0 2 5 6 5 3 4 0 1 0 3 0 1 1 0 Notes: Quadrantids in 1999: the highest activity occured from Jan 3, 17h UT to Jan 4, 03h UT. -: lost counts because of high noise level or machine failure. @: hourly rate estimated by effective observation time less than 60 min. n: contamination due to radio noise. e: contamination due to sporadic E opening. f: no data available due to TX or RX failure. JST = UT + 9 hours Sadao Okamoto --------------------------------------------------------------------------- Observer: Chikara Shimoda Location: Asahi, Nagano, Japan (137 51' E, 36 07' N) Frequency: 81.4 MHz Transmitter Location: FM-Japan 81.3 MHz, 10 kW, distance 180 km. Antenna: 5 element Yagi directed to the zenith. Receiver: AM-FM Tuner (TRIO KT-1100) Observing method: Meteor echoes output from center-tuning meter were recorded on a pen-recorder chart. December 1998 Dec | UT 1998 | 11h 12 13 14 15 16 17 18 19 20 21 22 | *(1) **(2) ------+-------------------------------------------------+----------- 1 | 11 24 19 21 22 25 31 29 36 29 28 20 | 20.3 28.8 2 | 15 25 29 24 23 16 25 30 30 34 27 32 | 22.0 29.7 3 | 14 24 27 34 30 28 34 25 35 | 21.7 31.0 4 | 17 21 26 21 24 15 30 32 36 37 49 40 | 20.7 37.3 5 | 16 31 22 20 22 29 35 35 42 37 30 23 | 23.3 33.7 6 | 20 24 29 21 16 22 16 32 41 31 38 39 | 22.0 32.8 7 | 22 23 25 29 23 28 29 35 32 36 25 24 | 25.0 30.2 8 | 13 33 32 39 27 25 28 | 28.2 28.0 9 | 24 30 27 32 32 27 36 28 29 40 25 28 | 28.7 31.0 10 | 20 23 41 26 28 27 26 35 38 38 29 27 | 27.5 32.2 11 | 30 58 25 24 24 28 37 34 36 32 23 | 32.2 31.7 12 | 31 31 36 32 29 21 30 38 46 45 31 28 | 30.0 36.3 13 | 36 56 55 45 33 19 23 48 47 52 39 38 | 40.7 41.2 14 | 40 40 50 59 62 22 23 27 36 43 34 25 | 45.5 31.3 15 | 14 24 36 25 22 16 28 33 36 28 25 23 | 22.8 28.8 16 | 15 17 21 21 22 16 19 18 19 29 22 23 | 18.7 21.7 17 | 12 15 11 18 24 21 29 25 23 29 27 21 | 16.8 25.7 18 | 10 11 14 16 21 24 28 28 19 29 26 30 | 16.0 26.7 19 | 16 12 15 9 14 13 22 20 21 26 24 24 | 13.2 22.8 20 | 11 11 13 16 14 25 15 25 24 18 22 14 | 15.0 19.7 21 | 13 15 21 22 20 16 23 22 21 18 23 26 | 17.8 22.2 22 | 10 19 17 20 23 26 42 27 31 30 30 34 | 19.2 32.3 23 | 15 17 19 17 11 13 22 15 33 25 20 21 | 15.3 22.7 24 | 14 15 14 14 12 19 19 20 28 32 25 20 | 14.7 24.0 25 | 11 11 13 13 14 20 16 22 22 23 31 15 | 13.7 21.5 26 | 10 14 15 16 15 13 21 26 17 20 29 20 | 13.8 22.2 27 | 10 10 8 12 13 20 27 27 19 35 | 12.2 27.0 28 | 11 15 17 15 27 12 22 26 19 35 29 20 | 16.2 25.2 29 | 9 13 17 14 12 27 12 | 15.3 12.0 30 | 18 14 11 16 24 33 25 31 26 22 29 | 16.6 27.7 31 | 9 14 13 14 21 20 29 23 22 29 26 26 | 15.2 25.8 ------+-------------------------------------------------+----------- 1998 | 11h 12 13 14 15 16 17 18 19 20 21 22 | *(1) **(2) Dec | UT Notes: * (1) average hourly rate between 11h-17h UT **(2) average hourly rate between 17h-23h UT . local time = JST = UT + 9 hours Chikara Shimoda --------------------------------------------------------------------------- Observer: Pierre Terrier Location: Canet, France (3 36'E, 43 41' N) Frequencies: 96.8 and 98.10 MHz Transmitter Location: Several, which complicates things! Antenna: 6-element Yagi FM. astronomical azimuth 250 deg (ENE), elevation 20 deg. Receiver : FM Tuner Kenwood KT-54 L Observing method: Electronic interface on LINE output audio signal are fed in COM1: of an IBM 286 computer. METEOR v 2.05 processes the signal and records on hard disk the time of the events. METEOR parameters: SAMPLING = 120, TRESHOLD = 0.8, DELAY = 30 s | Jan 1999 UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ---+---------------------------------------------------------- 0 | 3 0 5 12 1 0 2 2 3 3 4 3 2 6 2 1 | 0 3 9 8 0 5 1 5 3 2 5 1 3 3 0 2 | 1 4 7 5 1 2 1 1 1 5 6 1 1 3 4 3 | 1 4 4 2 2 3 1 6 1 1 5 5 0 1 8 4 | 0 1 3 3 1 3 0 5 4 3 1 3 2 2 4 5 | 4 1 1 1 1 0 0 4 2 2 6 4 5 1 3 6 | 4 3 4 3 2 5 1 4 2 1 9 5 0 3 3 7 | 7 2 2 7 8 5 2 3 4 3 7 3 7 2 3 8 |17 4 4 14 31 6 6 6 6 3 5 3 3 5 4 9 | 4 6 3 4 9 17 4 5 3 3 2 11 1 2 7 10 | 7 5 13 9 9 24 2 5 5 5 3 10 2 2 11 11 | 1 6 12 5 6 3 3 4 3 7 2 7 7 6 20 12 | 4 9 10 7 1 0 3 6 8 5 6 7 3 5 14 13 | 2 6 15 7 0 1 4 2 5 2 7 4 2 3 5 14 | 3 6 21 4 3 4 5 4 0 2 6 16 4 5 9 15 | 3 5 20 3 4 4 0 4 1 4 2 3 6 3 11 16 | 7 0 17 9 3 5 7 3 1 0 3 5 2 3 6 17 | 4 4 15 3 2 4 2 1 0 1 1 4 3 2 2 18 | 2 1 14 1 2 1 0 4 2 2 2 3 2 0 4 19 | 0 0 12 0 1 1 1 1 0 1 0 0 0 1 2 20 | 2 1 19 2 3 6 2 3 2 3 1 0 1 1 2 21 | 3 0 18 2 0 1 0 1 2 1 1 0 0 1 0 22 | 4 1 17 4 0 2 1 1 0 2 2 2 2 2 1 23 | 2 2 12 2 2 2 0 4 1 0 1 2 7 0 1 ----+---------------------------------------------------------- UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | Jan 1999 | Jan 1999 UT |16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 ----+-------------------------------------------------------------- 0 | 1 2 0 1 1 3 0 0 1 0 0 0 0 1 2 31 1 | 2 3 1 2 0 6 0 2 2 1 0 1 1 0 16 23 2 | 4 1 1 1 4 2 0 1 1 4 1 1 0 2 3 52 3 | 1 3 0 3 1 4 1 0 3 1 1 0 0 0 6 48 4 | 7 4 1 0 3 3 2 1 2 0 2 1 3 1 1 27 5 | 9 5 1 1 8 4 0 0 1 0 1 0 1 0 2 14 6 | 8 8 3 2 6 1 1 2 2 0 1 1 0 2 2 18 7 | 6 16 2 0 8 7 2 1 1 7 0 1 2 2 4 25 8 | 7 5 5 4 20 6 7 1 4 4 1 4 2 2 2 19 9 | 6 4 3 3 15 6 4 1 2 4 3 2 4 0 3 4 10 | 6 4 4 4 14 8 8 1 1 3 1 2 2 1 0 1 11 | 2 5 5 5 13 5 2 1 2 3 1 0 3 0 3 4 12 | 6 4 3 3 12 3 3 2 1 1 1 0 1 1 0 15 13 | 3 0 3 2 14 10 4 3 1 5 1 0 2 2 1 11 14 | 4 2 0 3 10 6 7 0 1 4 1 1 1 0 0 11 15 | 0 1 3 1 3 6 2 0 0 0 1 0 3 0 0 12 16 | 2 0 3 1 5 11 1 1 3 2 1 0 3 2 1 15 17 | 3 0 1 0 3 5 4 5 0 2 0 0 0 0 1 1 18 | 2 0 1 1 1 0 1 21 3 0 1 0 0 1 1 0 19 | 2 1 1 1 0 5 1 0 0 0 0 0 2 0 0 2 20 | 1 1 1 3 3 4 2 0 1 1 1 0 0 1 0 2 21 | 1 0 0 0 1 1 1 1 0 0 0 0 1 0 0 0 22 | 0 1 2 0 2 0 1 0 0 0 1 0 0 1 4 0 23 | 0 0 1 0 3 1 0 0 1 0 0 0 0 1 21 2 ----+-------------------------------------------------------------- UT |16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | Jan 1999 Pierre Terrier --------------------------------------------------------------------------- Observer: Ilkka Yrjola Location: Finland (26 35' E, 60 54' N) Frequency: 88.8 MHz ? Receiver: Salora SRP-22 modified, narrow band FM (B=15 kHz)? detected signal level >-122 dBm. FM detection, no pulse noise rejection required. Antenna: 2-el. Yagi, G=4 dBd to SW, azimuth 45 deg (SW), polarisation H. Data sampling system: threshold triggering, sampling rate 32 ms. Computer logs total hourly elapsed reflection time, number of triggers for the hour, the longest time the signal was continuously above detection level for the hour. Data on major showers available in the Compact MS-Soft format. Software for viewing available from www.saunalahti.fi/~oh5iy/radio50.zip (754 K). Quadrantids 1999 Meteor counts in one hour intervals starting at: UT | 2 Jan 3 Jan 4 Jan 5 Jan ----+--------------------------------- 0 | 211 265 2116 199 1 | 266 312 2026 227 2 | 255 273 1848 201 3 | 278 299 1699 262 4 | 233 334 1330 315 5 | 243 295 723 273 6 | 262 265 435 328 7 | 278 447 592 205 8 | 269 337 1027 185 9 | 261 597 1727 200 10 | 347 1014 1569 299 11 | 516 1254 1452 445 12 | 424 1347 869 336 13 | 349 1362 770 288 14 | 193 1188 355 202 15 | 272 977 320 134 16 | 175 791 283 145 17 | 185 765 197 101 18 | 195 836 196 143 19 | 264 1084 158 159 20 | 180 1392 198 287 21 | 248 1591 212 239 22 | 279 1472 252 226 23 | 278 1759 253 229 ----+--------------------------------- UT | 2 Jan 3 Jan 4 Jan 5 Jan Note: The scaling factors have been re-estimated per Dec. data from 29 days and compared to monthly averages since 1993. This did indicate some need to adjust the count and time parameter by some +15...20% to keep the curves comparable to the older ones. Ilkka Yrjola 2. ABOUT THE RMOB The RMOB is an independent initiative of some workers in the field of radio meteor scatter observations and data reduction. It started in August 1993 in order to spread rapidly the Perseid results via E-mail. Since then, it has appeared monthly, and it has gradually been expanded. In regularly publishing summaries of observations, potential radio observers are kept up to date of existing installations, possibilities and limitations of radio meteor observations. In the long run, there should be sufficient observing stations to cover the whole globe, allowing to detect stream outbursts which may remain unnoticed visually. RMOB contains typically: summaries of recent observations, equipment data, first results of stream activity by radio methods, relations between radio and optical meteors, references to other publications in the field of meteor astronomy and radio scatter techniques, announcements of meetings, short questions and answers, non-commercial (second hand) sale of radio equipment, available software. Contributors are mentioned, and interested persons are asked to contact them directly. RMOB can be copied freely in unabridged and unmodified form. Extracts should indicate the source (Radio Meteor Obs Bulletin, month and year). If you want to subscribe (or un-subscribe) to the E-mail distribution list, please send a message to C. Steyaert. Those not having access to E-mail can obtain a printed copy free of charge from J. Van Wassenhove (current or back-issues). 3. CONTRIBUTORS / USEFUL ADDRESSES Enric Fraile Algeciras (EA3BTZ) Frederic Corominas 58, Torrelles de llobregat, E-08629 Barcelona E-mail: EA3BTZ@mx3.redestb.es http://www.redestb.es/personal/ea3btz (in Spanish) Michael Boschat 6306 Cork St., Apt.512, Halifax, Nova Scotia, Canada E-mail: andromed@atm.dal.ca Maurice De Meyere Hullekensstraat 24, B-9831 Deurle, Belgium tel: +32 (9) 282 35 26 Call: ON4NU, packet: on4nu@on1ced E-mail: via Chris Steyaert University of Ghent, Astronomical Observatory Krijgslaan 281(S9), B-9000 Gent, Belgium E-mail contact: Paul.Vauterin@oma.be, Pierre.DeGroote@rug.ac.be H. W. Kelsey, A.L.P.O. Santa Maria, CA, USA E-mail: 73073.1464@compuserve.com Werfried Kuneth Ferndorf, Austria E-mail: kuneth@netway.at Alastair McBeath IMO: International Meteor Organization 12A Prior's Walk, Morpeth, Northumberland, NE61 2RF, England, U.K. E-mail: via Chris Steyaert R.B. Minton Astrometric Observatory 568 North First Street, Raton, NM 87740, USA tel: +001 (505) 445 7009 Sadao Okamoto E-mail: okamoto@jim.sugiyama-u.ac.jp Chikara Shimoda 178, Hario, Asahi-mura, Higashitikuma-gun Nagano, Japan Fax: +81-263-99-3532 E-mail: c-shimo@mtd.biglobe.ne.jp JN Homepage http://www2s.biglobe.ne.jp/~JN-/index.html Chris Steyaert, VVS Kruisven 66, B-2400 Mol, Belgium tel: +32 (14) 31 51 04 E-mail: steyaert@vvs.be Compuserve: 72650,3513 Pierre Terrier Canet (close to Montpellier), France E-mail: pierre.terrier@wanadoo.fr Jeroen Van Wassenhove, VVS 's Gravenstraat 66, B-9810 Nazareth, Belgium tel: +32 (9) 385 61 09 E-mail: 100101.734@compuserve.com Ilkka Yrjola Jukolantie 16, FIN-45740 Kuusankoski, Finland E-mail home: oh5iy@sci.fi http://www.sci.fi/~oh5iy/ Call: OH5IY, packet radio: OH5IY@OH5RBG.#KVL.FIN.EU -- Christian Steyaert (RMOB9901) 8 February 1999 --