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(meteorobs) Fwd: Radio Meteor Obs. Bull. July 1998
>Date: Fri, 7 Aug 1998 18:32:30 +0200 (CEST)
>To: linasu@gemini.ldc.lu.se, gnomeck@concentricdot net, steyaert@vvs.innetdot be,
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>From: Christian Steyaert <steyaert@vvs.innetdot be>
>Subject: Radio Meteor Obs. Bull. July 1998
>
>Radio Meteor Observation Bulletin No. 60 August 1998
>
>
>1. FORWARD SCATTER METEOR OBSERVATIONS
>
>Observer: Enric Fraile Algeciras
>Location: Barcelona, Spain (01 59' E, 41 21' N)
>Frequency: 48.250 MHz
>Transmitter location: most likely Czech television C2 C. Budejovica,
> 100 kW, horizontal polarisation.
>Antenna: 6-element Yagi 617-6B, 14 dBd gain.
> astronomical azimuth 215 deg (=NE), elevation 0 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 (100 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 9 second/18 sampling interval to
> store all the > 1.0 s signal increases.
>
>
> | July 1998
> UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
> ----+-----------------------------------------------------------
> 0 | 1 13 6 6 7 29 33 18
> 1 | 1 8 6 3 4 3 21 44 22
> 2 | 3 12 10 5 4 1 13 14 23
> 3 | 4 14 5 6 4 2 22 20 20
> 4 | 2 12 10 6 3 1 23 27 24
> 5 | 6 22 9 9 10 2 36 39 25
> 6 | 4 16 20 14 8 1 1 22 24 21
> 7 | 2 26 8 46 10 46 39 29
> 8 | 2 25 6 44 3 1 27 33 76?
> 9 | 1 15 13 2 4 1 1 1 26 24 16
> 10 | 7 11 20 7 1 28 18 50?
> 11 | 5 8 9 2 39 9 17 12 19
> 12 | 1 7 3 3 10 25 12 34
> 13 | 2 8 45 3 5 2 22 23 23 59?
> 14 | 6 27 2 8 8 1 21 30 24 22
> 15 | 4 23 48 9 11 1 1 21 29 19 37
> 16 | 4 16 9 32 14 5 21 29 23 26
> 17 | 1 3 9 34 10 3 12 15 23 14
> 18 | 16 3 12 3 9 8 36 55?
> 19 | 1 12 6 3 6 1 12 8 25 19
> 20 | 1 7 6 5 3 1 1 1 18 11 10 22
> 21 | 1 11 4 6 2 1 1 1 13 12 13 21
> 22 | 1 10 3 6 18 1 10 21 24 18 34
> 23 | 3 17 9 6 5 1 1 1 27 24 16 29
> ----+-----------------------------------------------------------
> UT | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
> | July 1998
>
> | July 1998
> UT | 16 17 18 19 26 27 28 29 30 31
> ----+---------------------------------------
> 0 | 34 35 24 14 10 15 23 10
> 1 | 24 21 27 9 7 10 28 14
> 2 | 24 17 45* 4 9 7 15 11
> 3 | 26 21 19 9 5 4 7 1
> 4 | 29 23 16 8 13 8 6 6
> 5 | 24 26 31 9 19 18 8 13
> 6 | 12 25 30 6 10 15 13 19
> 7 | 29 20 31 9 11 6 8 13
> 8 | 28 27 30 7 5 4 2 4
> 9 | 16 72? 31 2 9 3 7 3
> 10 | 28 54? 28 2 5 23 2 2 3
> 11 | 18 69? 20 6 2 40? 1 1 4
> 12 | 39 23 24 1 1 5 2 7 2
> 13 | 20 23 16 4 2 5 2 9 6
> 14 | 17 14 24 3 3 3 1 35? 1
> 15 | 52? 24 22 3 4 4 5 9 1
> 16 | 21 26 30 7 7 6 3 56? 4
> 17 | 18 20 1 10 21 5 15 3
> 18 | 12 12 1 5 24 1 2 1
> 19 | 2 11 3 1 10 1 1 16
> 20 | 12 11 5 1 5 6 5 4
> 21 | 19 14 5 7 6 5 30? 5
> 22 | 12 17 10 9 9 4 2 4
> 23 | 24 27 7 13 7 14 9 10
> ----+---------------------------------------
> UT | 16 17 18 19 26 27 28 29 30 31
> | July 1998
>
>
>Notes:
> . nn? possibly affected by sporadic-E or FAI.
> . * outburst?
>
>
> Enric Fraile Algeciras
>
>---------------------------------------------------------------------------
>Observer: Michael Boschat
>Location: Halifax, Canada (63 36'W, 44 39'N, 58 meters above sea level)
>Listening Frequency: 83.24 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
>
>
> July 1998
>
> Number of meteors heard in one hour interval
>
>1998| UT
>July| 10h 11 12 13 14 15 16 17 18 19 20
>----+-------------------------------------------
> 6 | - - 9 7 - - - - - - -
> 7 | - - - - - 7 5 - - - -
> 8 | - - - 3 6 14 12 11 - 9 -
> 9 | - - - - - - - - - - -
> 10 | - - - - - - - - - - -
> 11 | - - - - - - - - - - -
> 12 | - - 18 19 20 34 11 6 - - -
> 13 | - 8 22 18 38 13 - - - - -
> 14 | - - 10 0I 2I - - - 4 - -
> 15 | 6I 7I 2I 4I 10I 5I 9I - 4I - -
> 16 | - 2I - - - - - - - 2I -
> 17 | - - - 3I - - 1I - - - -
> 18 | 7I 7I 10I 5I 4I - - - - - -
> 19 | - 20 17 29 30 14 - - 7 - -
> 20 | 7 8 14 29 28 17 7 - - - -
> 21 | 21 22 19 9 20 7 - - 23 14 -
> 22 | 10 12 8 10 14 - - - - - -
> 23 | - 7 9 5 2 - - - - - -
> 24 | - - - 16 - - - - - - -
> 25 | 15 13 3 7 3 - - - - - -
> 26 | - 3 3 - - - - - - - -
>----+-------------------------------------------
>July| 10h 11 12 13 14 15 16 17 18 19 20
>1998| UT
>
>
>Notes:
> . no corrections for radiant position made to the counts.
> . ( - ) means no observations made.
> . active showers: July Pegasids maximum on Jul 10
> July Phoenicids Jul 13
> Pisces Austrinids Jul 28
> South Delta Aquarids Jul 28
> Alpha Capricornids Jul 30
> . I= Interference
>
>
> Mike Boschat
>
>----------------------------------------------------------------------
>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.acdot 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.
>
>
> -------------------------------------------------------------
> | Jul 1998 | 10x % reflec. time | horiz: day | vert: time UT|
> ----------------------------------------------------------------
> | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
> ---+------------------------------------------------------------
> 0 | 69 60 34 43 61 57 44 55 53 42 51 46 48 54 61
> 1 | 58 60 39 64 57 55 53 63 58 64 77 56 63 76 71
> 2 | 89 91 57 122 67 69 61 77 68 77 73 68 76 48 71
> 3 | 96 127 88 122 62 66 87 94 95 83 79 99 73 79
> 4 | 91 94 62 75 88 90 72 80 70 94 77 102 74 66 54
> 5 | 119 66 80 78 115 103 95 80 55 59 87 84 60 80 57
> 6 | 127 90 75 81 89 57 52 92 52 46 94 65 52 112 55
> 7 | 78 69 49 92 70 34 63 42 48 36 77 61 30 63 41
> 8 | 78 84 54 70 63 30 74 25 33 51 61 73 16 47
> 9 | 63 47 41 74 56 22 57 30 25 27 45 54 11 39 34
> 10 | 48 42 32 79 101 40 45 26 15 34 33 51 10 46 19
> 11 | 46 35 21 65 39 24 20 35 11 21 31 34 6 35 23
> 12 | 27 19 11 61 50 21 8 25 13 19 34 26 24 15 12
> 13 | 25 27 10 30 34 14 15 16 10 19 19 24 13 9 17
> 14 | 26 20 13 25 50 15 4 13 8 5 14 11 14 12 10
> 15 | 25 22 20 22 15 14 32 14 5 14 19 5 17
> 16 | 24 41 38 20 21 7 8 12 14 9 17
> 17 | 18 36 14 11 16 7 15 8 23 14 15 7
> 18 | 9 13 12 40 11 13 9 9 10 13 12 8 10 14
> 19 | 11 9 16 11 13 19 11 14 18 24 9 15 34 21 12
> 20 | 16 15 26 18 25 15 18 14 11 18 14 19 25 16 20
> 21 | 21 20 29 15 26 28 18 25 18 25 19 22 23 23 20
> 22 | 25 29 20 25 23 32 24 26 32 34 28 27 28 23 32
> 23 | 30 38 39 30 38 28 36 35 59 39 37 32 29 56 44
> ---+------------------------------------------------------------
> | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
>
> --------------------------------------------------------------
> | Jul 1998 | 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 | 53 48 53 51 51 47 69 48 90 82 97 99 147 104 127 138
> 1 | 90 42 235* 91 49 63 85 61 85 92 107 125 164 111 120 116
> 2 | 61 62 204* 74 75 78 94 81 87 107 174 136 231 114 148 154
> 3 | 74 62 56 50 63 84 86 96 110 143 183 181 218 118 132 156
> 4 | 69 38 62 45 51 87 61 84 84 57 142 139 121 130 109 131
> 5 | 87 64 66 53 35 89 67 154 45 116 119 116 67 95 60
> 6 | 66 47 77 40 48 87 67 80 68 101 73 58 50 62 55
> 7 | 43 41 16 43 58 63 107 37 57 44 42 41 60 45
> 8 | 44 31 55 33 85 86 84 85 49 96 53 56 60 62 29
> 9 | 58 31 64 32 61 54 58 39 50 35 57 38 40 34
> 10 | 41 40 35 55 42 96 35 87 28 50 54 52 28
> 11 | 26 28 27 41 37 30 49 94 31 62 39 22 27 20
> 12 | 13 15 15 21 34 49 18 24 26 24 18 31 11 10
> 13 | 46 14 13 17 15 49 44 25 24 38 30 12 25 32 11 8
> 14 | 18 28 7 21 19 22 13 12 12 16 25 11 19 8 7 7
> 15 | 5 19 11 11 14 27 14 12 26 15 21 6 15 22 14
> 16 | 10 26 18 9 14 23 9 11 14 17 20 10 21
> 17 | 10 21 9 9 13 11 15 12 14 13 13 23
> 18 | 9 12 24 56 16 28 11 63 15 18 17 60 80
> 19 | 13 15 12 18 28 25 12 23 30 18 38 29 56 35
> 20 | 18 41 25 22 23 24 25 27 31 27 26 18 54 21 31 18
> 21 | 11 40 18 21 21 19 46 35 12 53 41 27 72 36 33 27
> 22 | 24 45 24 22 44 39 34 36 48 35 63 39 49 54 63 52
> 23 | 32 28 36 34 42 64 47 44 54 65 62 67 59 75 81 68
> ---+----------------------------------------------------------------
> | 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
>
>
>Notes:
> . * unexpected activity on July 18, 1h - 3h UT.
> . the usual delta Aquarids and alpha Capricornids activity from July 25
> onwards.
>
>
> Pierre De Groote
>
>---------------------------------------------------------------------------
>Observer: Ou Yang Tian Jing
>Location: Wu Han, Hu Bei, P.R. of China (114 17' E, 30 30' N)
>Frequency: 95.9 MHz
>Transmitter location: FM of Korea
>Antenna: 5-element Yagi, azimuth 315 deg, elevation 15 deg.
>Receiver: receiver with digital tuner (DS R-3000)
>Observing method: listening
>
> | 1998 July
> UT | 1 4 5 6 7 8 9 10 11 12 13 14 15
>---------------+---------------------------------------------
>18h30m-19h00m | 0
>19h00m-19h30m | 0 2 0
>19h30m-20h00m | 1 6 1 1 4 2 14
>20h00m-20h30m | 0 3 0 2 7 0 3
>20h30m-21h00m | 3 5 0 3 2 1 0 3 4
>
> | 1998 July
> UT | 17 18 19 23 26 27 28 29 30 31
>---------------+---------------------------------------
>18h30m-19h00m |
>19h00m-19h30m | 2 1
>19h30m-20h00m | 3 0 0 5 1 10 3
>20h00m-20h30m | 3 1 1 0 4 12 0 7 4 0
>20h30m-21h00m | 4 5 1
>
>Note:
>. local time = UT + 8 hours
>
>
> Jiang
>
>---------------------------------------------------------------------------
>Observer: Will Kelsey
>Location: Santa Maria, CA, USA (120 26'9" W, 34 55'38" N)
>Frequency: 88.7 MHz until July 22,
> 98.5 MHz from July 23 onwards
>Transmitter Location: Not Determined
>Antenna: Yagi FM 6 element.
> Heading 85 deg until July 22, 355 deg from July 23 onwards
>Receiver: Sangean 803A
>Observing Method: Listening to audio recording
>
>
> Underdense/Overdense Scale:
> C-Dense: 0.5 second or less
> B-Dense: 0.5 to 3.0 seconds
> X-Dense: 3.0 seconds or more
>
> Estimated Signal Amplitude (ESA): 1 to 99 maximum
> Interference (INT): Lo Med Hi
>
> Each observation hour is recorded in three 20 minute intervals
>
>______________________________________________________________________
>July
>1998 hr-UT X-Dense B-Dense C-Dense ESA INT Total
>----------------------------------------------------------------------
> 1 1100-1200 4-4-3 5-12-2 37 None 30
> 2 1100-1200 0-0-1 2-0-0 2-2-5 33 Med 12
> 3 1200-1300 2-4-4 3-5-6 50 None 24
> 4 1300-1400 4-3-5 5-2-7 50 " 26
> 5 1300-1400 0-0-1 1-4-3 7-7-5 43 " 28
> 5 1400-1500 0-0-1 8-0-1 4-4-4 59 " 22
> 6 1200-1300 2-2-3 3-5-4 58 " 19
> 7 1200-1300 3-5-3 7-7-7 53 " 32
> 8 1400-1500 0-0-1 5-3-3 5-5-4 77 None 26
> 9 1400-1500 2-4-4 2-2-7 48 " 21
>10 1400-1500 1-1-4 2-1-3 50 Lo 12
>11 1100-1200 1-4-0 2-6-4 29 None 17
>12 1100-1200 0-1-0 1-1-1 1-2-4 64 " 11
>13 1400-1500 1-2-1 2-4-3 54 " 13
>14 1300-1400 3-0-2 4-3-4 25 " 16
>16SDA 1330-1430 0-1-0 3-1-3 5-5-3 38 " 21
>17 " 1326-1426 3-4-1 5-2-9 63 None 24
>18 " 1322-1422 2-0-2 1-1-0 50 Hi 6
>19 " 1318-1418 2-2-1 1-1-2 78 Lo 9
>20CAP 1050-1150 2-3-0 2-6-4 53 None 17
>20SDA 1314-1414 0-1-0 2-1-2 1-3-1 80 None 10
>22SDA 0706-0806 1-1-1 3-5-0 36 " 11
>----------------------------------------------------------------------
>23SDA 0645-0745 4-6-5 6-5-5 65 None 31
>24 " 0640-0740 0-0-2 3-1-5 10-6-7 65 " 34
>25 " 0640-0740 INT-3-5 INT-5-10 58 Med 23
>26 " 0636-0736 0-1-0 5-4-3 10-6-5 59 None 34
>27 " 0636-0736 1-0-0 6-7-3 11-8-5 59 None 41
>28SDA 0632-0732 0-1-2 6-5-8 8-5-8 58 None 43
>----------------------------------------------------------------------
>1998 hr-UT X-Dense B-Dense C-Dense ESA INT Total
>July
>
>Note:
> . activity period of streams
> SDA: Southern delta Aquarids
> CAP: Capricornids
>
>
> 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, pictures with interference, sporadic-E, E-layer
> and FAI propagation are manually rejected. 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 3.5 seconds:
>
> | July 1998
> UT| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
>---+-----------------------------------------------------------
> 0| 8 22 14 6 15 14 19 15 9 20 15 15 11 9 13
> 1| 21 21 13 18 9 26 13 18 15 22 17 17 20 11 18
> 2| 19 20 13 25 19 18 14 15 12 19 24 14 17 19
> 3| 18 28 6 18 22 24 25 20 26 15 22 22 16 15
> 4| 18 23 15 21 15 14 20 13 13 21 23 16 17 18
> 5| 31 22 13 13 20 16 19 14 21 20 20 23 16 18
> 6| 21 33 16 11 14 25 14 16 22 17 20 15
> 7| 29 31. 13 17 21 11 21 14 21 13 19 12 9
> 8| 17 22 16 18 20 12 25. 7 19 6 9 13 12.
> 9| 23. 13 15 4 13 6 14 18 15 5 14 8 10.
> 10| 17 10. 11 10 22 5. 7. 10 9 9 5 14
> 11| 12 19 21. 18 20 22. 9 7 14 11 9
> 12| 14 22 15 10 17 17 22 16 16 4 9
> 13| 16 15 21. 11 14 7 9. 25 10 7 11 11 14 9.
> 14| 9 12 7 19 11 3 7. 10 11 6 7 12.
> 15| 17 3. 4 8. 1 5 3 4 7 6 6 8.
> 16| 12 1 7 4 2. 2 3 3 6 5 7. 5.
> 17| 4 4 8 4 5 5 8 7 3
> 18| 3 8 4 7. 6 4 8 4 4 4 5
> 19| 7 3 5 5 6 4. 3 6 5 3 5 3 3.
> 20| 5 4. 8 4 10 13 8 0 8
> 21| 5 6 13 1 11 11 11 9 11 12 9 4 3. 11
> 22| 17 8 14 17 16 13. 17 10 12 9 12 5 5 12
> 23| 14 9. 15 10 11 12 22 12 22 15 4 8 17 15 24
>---+-------------------------------------------------------------
> UT| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
> | July 1998
>
> | July 1998
> UT| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
>---+---------------------------------------------------------------
> 0| 17 9 19 13 15. 12 27 20 29 22 17 29 43 70. 62 30
> 1| 14 17 17 10 12 8 19 14 23 23 23. 40 46 62 56 34
> 2| 30 18 22 7 7. 17 16 29 39 40 15 41 57 67 53 37
> 3| 18 20 27 25 16 18 28 22 34 25 14 53 54 40 44 38
> 4| 21 20 9 11 7 15 26 17 18 12 10 31 37 33 31 25
> 5| 18 16 12 11. 16 15 15 8 21 14 16. 13 33 11 20 17
> 6| 16 14 25 13 18. 6 9 10 17 4 20 11 14 17 9
> 7| 7 17 15 21 15 8 6 19 11 17 19 36 17 19 8
> 8| 11 12 13 8 16 6 21. 8 10 14 19 6 10 8
> 9| 6 7. 12 2 14 7 10 2. 5 22 11 9 8
> 10| 7. 8. 11 6 8 6 8 10. 0. 10 5 10 7. 8 3
> 11| 21. 8 3 6 5 9 12 1 10. 7 8 17 11 6
> 12| 8 10 3 3 12. 7 12 4 12 14. 12. 8. 3
> 13| 7 11 16 6 6 9 0. 8 11 14 8 5. 8
> 14| 4 8 8 4. 3. 7 8 3. 10. 8 5. 13 13 4. 9
> 15| 6 7 2. 6 12 3 2 6 14 5 6 18. 7 6.
> 16| 3 1 4 6. 9 7 5 3. 1 12 14 7
> 17| 3 6 4 8 14 3 6 20. 4 7 3
> 18| 8 4 1 3. 9 8 6 6 5. 7 7 9
> 19| 15 4 5 10. 7 3 6 6 7. 11. 2.
> 20| 6 6 10 5 3 9 12 7 0. 9 12
> 21| 14 11. 9 11 9 4 15 17 18 13. 6 10 20
> 22| 10 7 3 6 15 14 18 10 26 34. 4 26 18
> 23| 11 23 7 17 14 23 18 12 42 29 52. 54 26 22
>---+---------------------------------------------------------------
> UT| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
> | July 1998
>
>
> Propagation overview for July 1998
>
> E : Sporadic-E or E-layer propagation
> F : FAI
> - : Propagation only via meteor echos.
>
> | Jul 1998
> UT| 1 2 3 4 5 6 7 8 910111213141516171819202122232425262728293031
>---+--------------------------------------------------------------
> 0| - - - - - - - - - - - - - - - - - - - F - - - - - E - - E - -
> 1| - - - - E - - - - - - - - - - - - - - E - - - - - E - - E - -
> 2| - - - - E - - - - - - - - - - - - - - E - - - - - E - - - - -
> 3| - - - - - - - - - - - - - - - - - - - - - - - - E - - E - -
> 4| - - - - - - - - - - - - - - - - - - - - - - - - E - - E - -
> 5| - - - - - - - - - - - - - - - - - - - - - - - - E - - - - -
> 6| - E - - E - - - - - - - - E - - - - E - - - - - - - - - - -
> 7| - E - - E - - E - - - - - E - E - - E - - - E - - - - - E -
> 8| - - - - E - - E - - - - - E - E E - E - - - E - - E E - E -
> 9| - E - - - - - - - - - - - E - E - - E - - - - - - E - - -
> 10| E E - - - - - - E E - - - E E E - - E - - - E - - - - - - -
> 11| E - - - - - - E E E - - - - E E - - E - - - - - - - E - - -
> 12| E - - - - - - E - - - - - E - - - - E - E - - - - - E - E -
> 13| E - - - - - - - - - - - - E - - - - E - E - - - E - - - - -
> 14| - - - - - - - - - - - - - - - - - - E - E - E E - E - - -
> 15| - - - - E - E - - - - - - - - - E - - - E - - - - E - - -
> 16| - - - - - - - - - - - - - E - - - - E E - - - - - E - -
> 17| - - E - - - - - - - - - E - - - - - E - - - - E E - - -
> 18| - - E - - - - - - - - - - E E - - - - E - - - - E - - - -
> 19| - - - - - - - - - - - - E E E - - - - E - - - F F F - F E
> 20| F F E F E - F - - F - - - - E - E E - - F - - - F F F - E F
> 21| E - E F F - F - - - - - - E E - E F - - - - - - F - E - - -
> 22| - - - - - F - - - - - - - E - - E - E - - - - - - - - E - - -
> 23| - - - - - - - - - - - - - - - - E - E - - - - - - - - E - - -
>---+--------------------------------------------------------------
> UT| 1 2 3 4 5 6 7 8 910111213141516171819202122232425262728293031
> | Jul 1998
>
>
> Notes:
> . no other correction except for "dead time" is used in the counts shown.
> . Very good activity from July 24 to July 31, most likely from the
> South Delta Aquarids. Maximum on July 28 and July 29.
> . local time conversion: 2 hour ahead of UT (04h00 UTC is 06h00 local)
> . July showed a very high number of thunderstorms and lightnings.
>
>
> Werfried Kuneth
>
>---------------------------------------------------------------------------
>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
>1998
>Jun| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
>Jun| 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| 35 35 32 40 53 58@56 n e n n@15 20 23 17 16 20 10 @8@12 11 23 30 --
> 2| 36 43 47 36 36 54 73 61 44 n e e e n 37 19 16 15 10 9 16 28 29@30
> 3| 39 28 31 35 42 55 61 62 47 39 24 22 25 38 27 26 11 16 14 6 8 26 31@31
> 4| 37 31 26 42 53 53 72 62 45 30@20 25 31 27 32 23 13 7 11 15 17 15 26@38
> 5| 36 32 32 38 55 63 73@66 e e e e e e 39 29 15 14 6 9 10 27 38@42
> 6| 41 42 44 57 49 73 76 91 49 48 n 50 50 61 34 e e e e 12 17 22 33 --
> 7| 43 37 43 46 64 63 79 71@58 n e e n e e@21 24 16 e e 13 18 28@30
> 8| 28 39 42 47 55 72 83 77 e e n 49 43 62 46 32 22 14 11 18 21 26 31@49
> 9| 45 33 36 41 63 83 88 72 53 39 40 69 69 44 36 23 e e e @7 19 14 27@46
> 10| 51 34 35 45 54 56 95 79 65 41 29 47 57 77 38 27 16 16 9 13 19 28 28@40
> 11| 27 31 45 56 64 97 81 95 e e e e e 52 33 28 e e e e 14 24 20@31
> 12| 38 41 47 37 53 76 e e e e e e e e e e e e e e 20 26 27@36
> 13| 44 41 42 47 56 64 78 62 e e e e e e 36 20 e e e e 9 12 26 --
> 14| 34 40 34 47 59 76 69 72 e n n n n e e 21 14@12@12 12 13 24 32@51
> 15| 46 36 44 53 65 79 89 73 43 43 e e e e e e e e 9 e@19 30 35@40
> 16| 32 40 41 57 74 66 95 68 e e e e e e e 23@21 e e e 10 21 28@40
> 17| 37 42 36 42 59 76 83 83 50 31 30 48 45 36 35 25 14 17 7 10 17 23 30@30
> 18| 45 35 39 48 66 77 77 62 36 17 22 45 40 40 35 14 10 9 11 9 17 26 17@34
> 19| 41 54 31 49 68 57 46 59 44 30 43 32 49 42@25 e e e e 12 15 28 31@34
> 20| 39 42 37 53 62 69 58 61 52 27 e e e e e e e 9 e@13 25 28 32@33
> 21| 48 43 46 52 59 72 61 62@45 e e e e e e e 18 13 11 8 15 28 32@50
> 22| 51 45 42 60 68 65 61 64 50@42 e e e e e 21 19 11 9 9 19 28 29@38
> 23| 41 45 47 61 66 75 72 52 48@52 e e e@42 39 26 26 22 17 14 13 22 37@37
> 24| 49 47 45 45 68 62 78 64 58 47 35 34 36 42 35 22 23 18 11 10 15 26 26@38
> 25| 53 36 37 45 64 72 68 58 46 38 n 32 37 e e 19 22 16 9 10 10 30 33@42
> 26| 45 41 46 55 68 51 68 71 50 39 36 30@35 51 33 20 10 15 9 14 18 29 41@40
>*27| 44 35 46 41 59 47 57 66 51@39 n n n n 42@45 48 40 46 33 41 66 70(126
>*28| 81 78 62 78 71 76 73 63 66 37 33 35 44 49 30 35 27 13 9 14 19 23 32@35
> 29| 48 44 41 67 62 68 60 53 55 40 16 24 33@31 33 33 15 18 14 11 22 33 30@39
> 30| 35 49 53 49 39 59 50 53 44 35 21 33 22 26 34 35 13 22 13 10 23 25 50@39
>---+-------------------------------------------------------------------------
>--
>Jun| 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
>Jun| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
>1998
>
>1998
>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
>Jul| 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| 42 46 54 59 65 61 62 69 35 28@31 32@27@35@28 17 16 14 7 10 20 32@40@45
> 2| 52 38 46 61 63 75 75 51 62 33 26@27 27 26 21 23@24 n 14 14 20 31 36@55
> 3| 47 43 40 49 46 63 63 44 44 14 16 11 17 21 13 5 9@12 8 7 17 23 32@43
> 4| 38 41 44 56 48 60 49 39 n 26 15 18 20 31 26 14 13@28 11 7 24 21 40@44
> 5| 34 46 53 68 60 73 54 45 29 17 18 16 18 29 27 12@16 13 7 14 18 33 39@38
> 6| 52 44 52 49 59 67 48 47 27@33 18 26 29 39 24 20 22 13 7 12 26 28 39@49
> 7| 54 35 52 52 61 53 55 37@36 e e e 15 17 17 15 9 13 9 7 13 18 29@43
> 8| 46 50 47 34 61 73 81 37 33 27 20 e e 22 20 25 17 4 11 10 27 26 31@39
> 9| 44 38 40 47 53 62 45 31 27 21 15 20@28 17 17 13 13 14 12 6 12 24 41@43
> 10| 42 46 56 53 69 56 42 34 40@21 17 29 12 25 24 19 21 12 13 17 19 28 37@45
> 11| 52 48 57 55 67 66 51 50 49@46@26 21 18 33 21 25 12 16 19 8 24 27 49 --
> 12| 37 44 53 58 45 59 61 37@39@39@18 13 22 24@27@16 14 12 6 16 17 21 25@33
> 13| 35 40 40 53 51 50 42 37 30 23 e e 10 39 22 21 23 18 22 9 22 41 34@36
> 14| 63 57 52 60 67 73 75@58 e@61 25@24@15 21 25 18 9 11 13 10 16 34 55@56
> 15| 51 60 59 56 76 61 65 43 37 32 e e e 35 29 13 25 13 12 18 21 29 39@51
> 16| 73 47 63 60 47 74 68 50 38 38 28 e e e e e e e e@13 19 32 39@36
> 17| 56 61 63 74 53 64 64 49 e 29 29 23 35 27 36 25 15 15 10 8 27 25 31@38
> 18| 54 51 57 54 67 81 72 40 33 32 22 18 23 30 23 n e e 17@12@24 29 35@44
> 19| 58 49 63 61 67 64 69 56 38 38 21 24 35 17 19 18 15 19 16 14 30 35 40@55
> 20| 57 56 63 64 66 58 66 46 31 35 20 23 18 25 26 16@21 18 11 17 16 29 43@50
> 21| 64 67 67 76 68 66 68 55 47 32 24 23 30 31 13 19 24 11@12 16 25 38 61@60
> 22| 47 64 72 60 63 69 76 71 40 25 f f 26 18 20 12 9 e 11 14 16 25 40@56
> 23| 48 73 82 69 61 55 50 49 34 37 25 23 22 27 20 10 19 16 9 27 22 34 45@63
> 24| 77 70 86 74 84 85 78 56 45 30 24 33 34 27 26 16 13 13 20 19 22 35 64@55
> 25| 72 85 82 74 87 75 62 50@48@40 e 18 9 24 23 16 12 f 12 13 21 36 56@68
> 26| 73 94 78 94 86100 69 43 36 18@26 26 26 20 9 11 19 12 12 20 24 38 53@80
> 27| 76 93 89 95 99 71 71 49 36 39 e e e e@13@26 15 14 8 19 17 36 51@73
> 28| 96108 94 80 89 85 74 32 39 19@20 @8 17 30 23 22 19 17 15 12 25 52 69@87
> 29| 98107 99 93 79 94 71 50 31 21@27 e e e e 9 15 18 13 10 14 42 75@70
> 30| 84105 91 88102100 63 47 40@37 e@22 20 23 26 12 12 21 13 10 25 32 48@64
> 31| 81 81 93 94 83 87 68 51 37 27 22 14@16 e e e e e e 11 16 28 53@63
>---+-------------------------------------------------------------------------
>--
>Jul| 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
>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
>1998
>
>
> Echoes with duration > 5 s
>1998
>Jun| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
>Jun| 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 2 4 3 1 1
> 2| 2 3 3 2 3 1 5 2 3 2 1 1 1 1
> 3| 1 7 1 10 10 5 2 2 2 6 2 2 2 1
> 4| 1 3 2 4 6 12 4 2 3 3 1
> 5| 2 2 1 8 5 6 4 3 3 1 1
> 6| 3 3 3 1 4 4 11 11 6 7 5 4 5 4
> 7| 1 4 5 5 7 9 9 6 2 2
> 8| 1 6 4 5 4 4 6 13 4 9 1 4 2 1 1 1
> 9| 1 4 2 6 11 14 12 4 9 2 6 4 3 2 1
> 10| 1 1 1 1 2 8 10 8 1 1 7 5 2 1 1 1
> 11| 2 1 3 7 16 13 5 2 2 3 1
> 12| 1 1 1 1 1 5 1 1 1
> 13| 3 2 2 1 4 9 4 1
> 14| 1 1 3 2 3 5 15 7 1 1 2 2
> 15| 2 3 8 8 5 3 3 1 2 2
> 16| 1 5 1 3 8 4 11 7 1 1 2
> 17| 3 3 4 2 5 4 13 3 4 3 7 9 1 2 1 1
> 18| 2 2 3 6 7 5 6 4 1 2 1 3 1 1 2 1 1
> 19| 1 1 4 4 5 8 6 1 2 2 4
> 20| 1 2 3 5 7 6 12 8 4 1 1 1
> 21| 1 2 2 5 4 5 9 2 1 1 2
> 22| 1 2 2 5 4 6 4 4 7 1 1 1 1 2 1 1
> 23| 1 1 2 5 3 4 6 3 6 6 1 2 2 1 3 1 2
> 24| 2 5 4 3 6 6 8 3 1 1 2 3 1 2 1
> 25| 1 3 1 3 3 7 6 7 2 1 1 1 3 1 1 1
> 26| 3 2 2 6 2 11 9 6 3 1 1 4 2 1 1 2 1 1
>*27| 1 2 1 4 11 1 6 7 2 2 1 2 2 3 1 7(12)
>*28| 13 9 6 9 6 10 14 6 7 6 1 2 6 3 2 1 1 1 1
> 29| 3 1 1 4 3 6 3 6 3 1 3 3 1 3 3 2 1 1 2 2 1 2
> 30| 2 3 6 2 2 6 1 3 4 4 2 3 1 3 1 1 1 1
>---+-------------------------------------------------------------------------
>--
>Jun| 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
>Jun| 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
>1998
>
>1998
>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
>Jul| 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 4 5 6 11 6 5 3 2 2 3 1 1 1 1 3 2
> 2| 2 1 2 4 3 13 9 5 8 1 1 2 1 1 1
> 3| 3 2 2 1 8 5 5 2 2 1 3 2 2 1 1 1 1 1
> 4| 1 3 3 4 2 3 2 5 2 3 3 1 1
> 5| 3 1 5 5 3 6 1 2 2 1 1 2 1 3
> 6| 2 5 3 5 5 2 7 1 2 1 1 2 2 2 1 2 4
> 7| 3 5 6 3 6 4 3 1 2 1
> 8| 7 3 5 10 6 8 5 3 2 1 1 2 2
> 9| 3 1 1 3 5 6 3 3 1 3 3 1 2 1 2 1 2 1 1
> 10| 2 5 5 3 3 4 4 3 1 1 2 1 1 1 3
> 11| 2 5 3 2 5 5 5 6 4 2 1 1 2 2 1
> 12| 2 5 4 5 5 3 4 5 1 1 2 1 1 1
> 13| 1 2 2 5 2 2 7 2 1 3 1 2 1 2
> 14| 9 6 3 9 13 8 2 3 1 1 1
> 15| 2 6 1 3 5 1 8 3 1 1 1 2 3 2
> 16| 2 2 6 3 4 2 5 4 2 7 1 1 3 3
> 17| 2 6 4 3 5 3 2 2 1 1 3 1 1 1 2 1 2 3
> 18| 3 3 3 5 5 5 10 4 4 3 1 2 1 2 1
> 19| 3 3 1 3 7 5 7 2 3 2 1 2 1 1 2 3
> 20| 5 4 7 4 5 5 13 3 2 4 1 4 3 1 1 1 1 2 2
> 21| 5 2 7 15 9 9 9 5 1 1 2 3 1 1 2 1 3
> 22| 1 5 7 4 5 6 10 4 2 3 1 1 2 2
> 23| 1 6 5 3 3 1 2 4 1 3 1 2 1 1 2 1 1 2
> 24| 2 1 6 5 9 5 6 5 1 5 3 1 2 1 2 1
> 25| 2 4 4 7 4 4 2 1 3 1 1 1 3 1 1 1 1
> 26| 4 7 5 9 4 3 1 6 5 2 1 1 1
> 27| 3 4 9 6 2 4 2 3 2 1 1 3
> 28| 6 15 17 9 11 11 2 4 1 1 1 2 1 1 1 2 3 4 3
> 29| 10 6 3 5 7 4 8 3 2 2 1 3 4
> 30| 7 15 14 / 15 12 2 3 4 3 1 2 2 1 3
> 31| 6 10 17 10 7 9 5 4 3 2 1 1 4 2
>---+-------------------------------------------------------------------------
>--
>Jul| 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
>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
>1998
>
> Daily rate of long echoes (T > 20 s)
> 1998
> Jun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
> ---------------------------------------------------------------
> 1 3 4 1 3 7 4 3 3 1 4 3 1 2 2
>
> Jun 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
> ---------------------------------------------------------------
> 1 3 5 2 4 2 4 3 2 3 1 3 5 2 4
>
> 1998
> Jul 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
> ---------------------------------------------------------------
> 4 3 3 1 3 2 3 5 1 3 4 6 4 3 4
>
> Jul 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
> -------------------------------------------------------------------
> 5 6 8 1 7 5 6 2 5 3 5 1 5 7 10 9
>
>Notes:
> -: 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 h
> *: I observed Pons-Winneckids outburst on June 27th from 5h to 23h UT.
>
>
> Sadao Okamoto / via Kimio Maegawa
>
>---------------------------------------------------------------------------
>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.
>
>
> July | UT
> 1998 | 11 12 13 14 15 16 17 18 19 20 21 22 | *(1) **(2)
>------+-------------------------------------------------+-----------
> 1 | 10 19 20 29 29 27 23 27 30 32 31 | 21.4 28.3
> 2 | 13 14 28 28 19 31 25 41 41 38 40 22 | 22.2 34.5
> 3 | 12 16 24 23 22 23 32 32 29 30 27 28 | 20.0 29.7
> 4 | 10 21 22 24 23 23 25 37 27 35 29 22 | 20.5 29.2
> 5 | 13 22 21 21 21 21 14 25 28 25 27 19 | 19.8 23.0
> 6 | 17 11 20 18 25 27 24 35 22 32 39 24 | 19.7 29.3
> 7 | 10 16 27 21 18 27 23 26 29 21 23 18 | 19.8 23.3
> 8 | 11 16 24 29 18 26 23 22 31 27 29 21 | 20.7 25.5
> 9 | 9 26 27 25 25 32 34 31 40 36 31 29 | 24.0 33.5
> 10 | 15 29 34 27 35 28 31 36 35 34 52 26 | 28.0 35.7
> 11 | 11 14 23 35 21 20 37 24 28 29 27 31 | 20.7 29.3
> 12 | 10 13 31 24 29 27 30 21 36 37 34 26 | 22.3 30.7
> 13 | 8 19 26 25 23 17 17 32 22 27 25 20 | 19.7 23.8
> 14 | 10 9 28 34 22 23 17 25 22 22 25 26 | 21.0 22.8
> 15 | 12 18 22 28 27 34 38 26 35 29 20 27 | 23.5 29.2
> 16 | 9 14 17 27 23 20 27 30 23 25 21 20 | 18.3 24.3
> 17 | 14 11 20 27 25 26 22 20 38 31 25 26 | 20.5 27.0
> 18 | 14 16 26 26 26 30 23 28 29 29 16 21 | 23.0 24.3
> 19 | 10 8 22 26 45 36 32 36 38 36 26 21 | 24.5 31.5
> 20 | 16 16 18 31 38 30 29 29 29 25 21 22 | 24.8 25.8
> 21 | 17 12 22 30 26 | 21.4
> 22 | 9 18 25 21 30 29 38 26 24 21 17 | 20.6 25.8
> 23 | |
> 24 | 44 36 42 43 37 49 28 25 14 | 40.7 32.7
> 25 | 14 12 33 55 67 60 52 51 37 35 34 25 | 40.2 39.0
> 26 | 12 23 32 51 47 46 22 35 31 34 28 14 | 35.2 27.3
> 27 | 14 24 39 53 58 66 54 59 47 48 36 19 | 42.3 43.8
> 28 | 10 21 34 41 46 45 37 34 | 32.8 35.5
> 29 | 9 24 43 60 55 47 57 46 39 29 30 22 | 39.7 37.2
> 30 | 14 26 31 57 51 62 42 31 25 25 18 22 | 40.2 27.2
> 31 | 13 30 51 34 46 41 39 41 33 31 26 27 | 35.8 32.8
>------+-------------------------------------------------+-----------
> 1998 | 11 12 13 14 15 16 17 18 19 20 21 22 | *(1) **(2)
> July | UT
>
>
> * (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: 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).
>
>
> delta Aquarids 1998
>
> Meteor counts in one hour intervals starting at:
>
> UT | 27 Jul 28 Jul 29 Jul 30 Jul
> ----+----------------------------------
> 0 | 361 324 446 492
> 1 | 363 440 523 698
> 2 | 396 683 405 566
> 3 | 347 490 622 560
> 4 | 544 350 591 438
> 5 | 281 423 465 262
> 6 | 313 450 342 313
> 7 | 233 230 278 302
> 8 | 231 348 268 315
> 9 | 258 276 307 220
> 10 | 182 212 203 234
> 11 | 271 157 245 148
> 12 | 189 139 148 154
> 13 | 177 259 265 188
> 14 | 249 178 169 156
> 15 | 195 133 200 189
> 16 | 168 136 146 201
> 17 | 174 166 166 147
> 18 | 94 150 120 135
> 19 | 246 177 171 132
> 20 | 179 212 197 167
> 21 | 283 252 251 250
> 22 | 397 335 515 333
> 23 | 439 469 521 462
> ----+----------------------------------
> UT | 27 Jul 28 Jul 29 Jul 30 Jul
>
>
> . sporadic E on July 27
>
>
> Ilkka Yrjola
>
>
>2. ANNOUNCEMENT
>
>Another outburst?
>
>The (meteorobs) mailing list (subscription instructions, see:
>http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html) carried a
>visual observation report from John Holtz (east coast of the USA) of
>a meteor outburst between July 18, 1h50 UT and 2h15 UT, with rates between
>1 and 2 per minute. "The meteors may have been concentrated around
>the Big Dipper, Draco, Bootes, and Hercules area. All of them were heading
>due south, so we couldn't determine a likely radiant."
>
>This outburst shows in the radio observations of Enric Fraile Algeciras,
>the University of Ghent, and Maurice De Meyere (detailed report next month),
>but not in those of Werfried Kuneth. Probably this can be explained by the
>difference in geometry, the former stations receiver-transmitter direction
>being roughly west-east, but Werfried's direction being south.
>This can be an indication for a radiant low in northern direction observed
>from Europe.
>Also on (meteorobs) Jin Zhu <zj@bac.pkudot edu.cn> mentioned the radiant
>associated with near-earth-asteroid 1997 BR, with maximum rate around
>July 19 and theoretical radiant near R. Asc 175 deg, Decl +65 deg (Epoch 2000),
>and atmospheric velocity of 16 km/s (calculation Rob McNaught).
>This radiant could fit the mentioned visual and radio observations.
>
>
>3. 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).
>
>
>4. 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.daldot 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@omadot be, Pierredot deGroote@rug.acdot be
>
>Ou Yang Tian Jing
>Wu Han, Hu Bei, P.R. of China
>E-mail: jxpsky@neasedot net and jiangxph@public.wh.hb.cn
>http://www.neasedot net/~jxpsky
>
>H. W. Kelsey, A.L.P.O.
>Santa Maria, CA, USA
>E-mail: 73073.1464@compuserve.com
>
>Werfried Kuneth
>Ferndorf, Austria
>E-mail: kuneth@net4you.co.at
>
>Alastair McBeath
>IMO: International Meteor Organization
>12A Prior's Walk, Morpeth, Northumberland, NE61 2RF, England, U.K.
>E-mail: via Chris Steyaert
>
>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.innetdot be
>Compuserve: 72650,3513
>
>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 (RMOB9807) 7 August 1998
>--