Abstract: An overview of the radio observations during May 2025 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 May 2025.
The hourly numbers, for echoes shorter than 1 minute, are weighted averages derived from:
During this month, there were few local disturbances, with lightning activity recorded on only two days. However, fairly strong solar flares were registered almost every day, most of them Type III.
Overall, meteor activity remained weak, below the average of previous years. The number of Eta Aquariids also remained subpar, but with a clear presence during the first decade of the month, especially regarding longer reflections. Throughout the entire month, 10 reflections longer than 1 minute were recorded.
A selection of these, along with a few other interesting recordings is included (Figures 3 to 18).
In addition to the usual graphs, you will also find the raw counts (subject to strict reservations as previously said) in cvs-format from which the graphs are derived. The table contains the following columns: day of the month, hour of the day, day + decimals, solar longitude (epoch J2000), counts of “all” reflections, overdense reflections, reflections longer than 10 seconds and reflections longer than 1 minute, the numbers being the observed reflections of the past hour.
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 May 2025.
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 May 2025.
Figure 3 – Meteor echoes May 2, 7h45m UT.
Figure 4 – Meteor echoes May 2, 8h50m UT.
Figure 5 – Meteor echoes May 3, 6h35m UT.
Figure 6 – Meteor echoes May 6, 6h40m UT.
Figure 7 – Meteor echoes May 7, 7h55m UT.
Figure 8 – Meteor echoes May 8, 3h35m UT.
Figure 9 – Meteor echoes May 8, 3h55m UT.
Figure 10 – Meteor echoes May 9, 1h50m UT.
Figure 11 – Meteor echoes May 10, 9h30m UT.
Figure 12 – Meteor echoes May 14, 9h50m UT.
Figure 13 – Meteor echoes May 18, 7h20m UT.
Figure 14 – Meteor echoes May 19, 4h55m UT.
Figure 15 – Meteor echoes May 19, 5h25m UT.
Figure 16 – Meteor echoes May 19, 9h45m UT.
Figure 17 – Meteor echoes May 23, 22h05m UT.
Figure 18 – Meteor echoes May 30, 3h10m UT.
