Abstract: An overview of the radio observations during April 2022 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 April 2022.
The hourly numbers, for echoes shorter than 1 minute, are weighted averages derived from:
Local interference and unidentified noise remained moderate to low for most of the month, but some strong noise was caused by solar eruptions (see an example from April 30th – Figure 3), but that noise was of course interesting in itself.
No lightning activity was recorded this month.
General meteor activity steadily increased, with clear increases in overdense reflections around April 8th, 15th, 23rd (Lyrids) and 29th. Six reflections lasting at least 1 minute were observed this month.
Attached are SpecLab images of some notable reflections (Figures 4 to 10).
In addition to the usual graphs, you will also find the raw counts 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.