An overview of the radio observations during July 2021 is given.
The graphs show both the daily totals (Figure 1) and the hourly numbers (Figure 2) of “all” reflections counted automatically, and of manually counted “overdense” reflections, overdense reflections longer than 10 seconds and longer than 1 minute, as observed here at Kampenhout (BE) on the frequency of our VVS-beacon (49.99 MHz) during the month of July 2021.
The hourly numbers, for echoes shorter than 1 minute, are weighted averages derived from:
As usual, observations were sometimes complicated by unwanted interference, unidentified noise, and on 9 days, moderate to strong lightning activity. To minimize the effects of these disturbances as much as possible, the automatic counts were corrected manually.
The rather remarkable increase of mainly shorter overdense reflections on 21 July is possibly due to the phi Piscids and/or the kappa Perseids, but this should be confirmed.
14 reflections of more than 1 minute were observed during this month. A selection of others striking or strong reflections is also attached. (Figures 5 to 13).
If you are interested in the actual figures, or in plots showing the observations as related to the solar longitude (J2000) rather than to the calendar date, I can send you the underlying Excel files and/or plots. Please send me an e-mail; felix.verbelen at skynet.be.
Figure 1 – The daily totals of “all” reflections counted automatically, and of manually counted “overdense” reflections, as observed here at Kampenhout (BE) on the frequency of our VVS-beacon (49.99 MHz) during July 2021.
Figure 2 – The hourly numbers of “all” reflections counted automatically, and of manually counted “overdense” reflections, overdense reflections longer than 10 seconds and longer than 1 minute, as observed here at Kampenhout (BE) on the frequency of our VVS-beacon (49.99 MHz) during July 2021.
Figure 3 – Meteor reflection 05 July 2021, 04h45m UT.
Figure 4 – Meteor reflection 05 July 2021, 09h55m UT.
Figure 5 – Meteor reflection 06 July 2021, 10h10m UT.
Figure 6 – Meteor reflection 07 July 2021, 06h30m UT.
Figure 7 – Meteor reflection 12 July 2021, 21h45m UT.
Figure 8 – Meteor reflection 16 July 2021, 04h05m UT.
Figure 9 – Meteor reflection 16 July 2021, 16h10m UT.
Figure 10 – Meteor reflection 27 July 2021, 02h15m UT.
Figure 11 – Meteor reflection 28 July 2021, 01h45m UT.
Figure 12 – Meteor reflection 28 July 2021, 06h25m UT.
Figure 13 – Meteor reflection 30 July 2021, 05h00m UT.
