An overview of the radio observations during July 2019 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 2019.

The hourly numbers, for echoes shorter than 1 minute, are weighted averages derived from:

N(h) = n(h-1)/4 + n(h)/2 + n(h+1)/4

During this month the registrations were quite often disturbed by moderate local interferences, on 1 day by weak “sporadic E” (Es) and on 7 days by sometimes strong lightning activity. The automatic countings were manually corrected in order to eliminate as much as possible the effects of these disturbances.

As expected, meteor activity increased in the course of the month, with a significant increase as from 26 July.

Long-lasting reflections were also more numerous. SpecLab pictures of a selection of eye-catching reflections are attached.

If you are interested in the actual figures, 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, 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 2019.

 

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 2019.

 

Figure 3 – 8 July 2019 03h40m UT.

 

Figure 4 – 10 July 2019 05h20m UT .

 

Figure 5 – 10 July 2019 06h10m UT .

 

Figure 6 – 15 July 2019 18h40m UT .

 

Figure 7 – 16 July 2019 04h35m UT .

 

Figure 8 – 17 July 2019 01h50m UT .

 

Figure 9 – 17 July 2019 07h25m UT .

 

Figure 10 – 22 July 2019 08h35m UT .

 

Figure 11 – 28 July 2019 07h40m UT .

 

Figure 12 – 28 July 2019 13h00m UT .