From: Ton Schoenmaker, Dutch Meteor Society Date: Sat, 18 Nov 2000 20:52:16 +0100 Forward Scatter Meteor Observations of Leonids Observer: Ton Schoenmaker Location: Roden, Netherlands (06 26' E, 53 08' N) Frequency: 55.275 MHz Transmitter: Spanish TV channel E3 (video)\\\; transmitters in La Muela (30 kW), Gamoniteiro (50 kW) and Aitana (60 kW)\\\; all stations within 100 Hz of nominal frequency\\\; distance ~1500 km Antenna: 3-elements horizontal Cushcraft 50 MHz Yagi tuned to 55.3 MHz\\\; geographical azimuth 210 degrees (SW) Receiver: Yupiteru MVT-9000 in USB mode\\\; sensitivity 0.5 uV at 12 dB S/N Observing: 800 Hz audio signal from earphone socket was rectified, digitised and fed into a PC via the parallel computer port. HP VEE was used to process the digitised signal and to store 15-minutes counts of reflections stronger than 0.22 uV (-120 dBm). Also for all individual meteors date, time, duration (dead time) and maximum signal are stored. Observations:Columns 2 - 5 give dead time percentages (reflections > -120 dBm)\\\; columns 6 - 9 number of reflections/hr longer than 2 seconds | dead time % | reflections >2 seconds UTC | 15 16 17 18 | 15 16 17 18 November 2000 -----+-----------------------------+----------------------------------------- 0 | 9.2 4.2 4.0 10.7 | 16 8 11 30 1 | 6.2 7.5 7.4 20.3 | 26 12 17 49 2 | 6.0 7.7 11.0 54.7 | 15 27 24 55 3 | 11.1 11.1 14.6 69.4 | 36 35 37 79 4 | 7.8 13.4 14.5 64.6 | 21 30 51 74 5 | 7.6 5.9 17.5 80.3 | 22 16 49 53 6 | 6.0 6.3 23.6 69.6 | 17 17 62 62 7 | 6.1 7.4 29.0 84.7 | 16 18 79 81 8 | 9.7 7.2 36.6 66.7 | 17 18 74 85 9 | 7.8 5.5 17.5 25.0 | 26 15 29 70 10 | 7.5 11.7 9.0 19.7 | 18 30 37 46 11 | 7.2 9.4 8.7 10.1 | 10 29 21 19 12 | 6.1 4.5 10.9 9.3 | 22 10 30 30 13 | 4.5 3.8 - - | 12 6 - - 14 | 3.7 4.6 - - | 12 11 - - 15 | 5.4 4.0 - - | 10 13 - - 16 | 2.9 4.9 3.7 - | 7 8 11 - 17 | 2.9 3.4 3.2 - | 9 8 14 - 18 | 4.1 3.0 3.4 - | 17 11 8 - 19 | 4.1 4.8 5.7 - | 8 18 23 - 20 | 3.8 3.7 6.9 - | 15 13 27 - 21 | 4.1 5.4 4.9 - | 8 16 16 - 22 | 5.4 3.8 4.6 - | 16 11 13 - 23 | 7.1 7.1 6.0 - | 27 16 13 - -----+-----------------------------+----------------------------------- - : no observations