EI7GL....A diary of amateur radio activity

///////////////////////////////////////////
Opening on the 40 MHz band between Slovenia & South America - 16th May 2022

Posted: 18 May 2022 05:23 AM PDT https://ei7gl.blogspot.com/2022/05/opening-on-40-mhz-band-between-slovenia.html



Borut, S50B in Slovenia reports that on the 16th of May 2022, his FT8
signal on 40.680 MHz was heard for the first time in South America!
The map above shows the path from S50B to PY2XB in Brazil (~10,000kms) and LU5FF in Argentina (~11,300kms).
Borut's 40 MHz was also heard by EA8BFK in the Canary Islands (3095kms) on
the 11th and the 17th of May. I don't know if the path to EA8 was open on
the 16th but it does suggest the F2 layer propagation might be reaching as
high as the 40 MHz band on north-south paths on a regular basis.
As there have been reports of recent openings on the higher 50 MHz band
from Europe to South America, it should be no great surprise that there was
an opening on the lower 40 MHz band.
I'd suggest however that this shows how valuable the 40 MHz band is to
radio amateurs and to those interested in propagation research. Signals on
the 40 MHz band give an early warning of potential openings on 50 MHz as
the Maximum Usable Frequency (MUF) will often be just below 50 MHz. If
someone hears a 40 MHz signal then at least they know what direction an
opening might be likely.
It's also good to see some of the radio amateurs in South America getting interest in the 40 MHz band. It will be interesting to see if they report
on any openings to the experimental stations on the 40 MHz band in North America.
Links...
1) As always, plenty of info on my 40 MHz page.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)