An overview of the radio observations during January 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 January 2021.
The hourly numbers, for echoes shorter than 1 minute, are weighted averages derived from:
Local interference and unidentified noise remained low for most of the month and no lightning activity was detected.
Due to a technical malfunction in the receiving installation, the data for the period 20210113_14:00 till 20210114_10:00 UT were lost.
The eye-catchers this month were of course the Quadrantids, which reached their maximum here on January 3rd. Also this year the shower was very active, with sometimes more than 5 reflections per minute, many of which were overdense. Attached are some 5-minute screen dumps showing the shower’s intensity. (Figures 3, 4, 5, 6 and 7)
The rest of the month was relatively calm, but at various times the activity of smaller showers was obvious; for this, reference is made to the raw counts.
This month only 5 reflections lasting longer than 1 minute were observed here. (Figures 8, 9, 10, 11, 12).
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.