Hi All
20m conditions were a bit better today and I finally managed to work Baker
with 100W, lots of feeder loss and a sloping dipole.
The problem I had was, after receiving my report from KH7Z, I failed to
receive RR73. Thanks to Bill's advice to start over again (TX1 message), on
the 4th QSO attempt (this time with G4KGC in the shack) I finally got my
RR73. Within about 5 sequences they came back again with a report again,
and QSO attempts proceeded normally.
Decoding was reasonably reliable at the time. It seems they did not
receive my TX3 message, hence did not send RR73, rather than me not decoding
the RR73.
What became apparent was that under these circumstances my TX freq was
shifted three times, then stuck on the final frequency and transmissions
would have continued at infinitum:
I guess this is what is expected as the User guide para 14 says:
Here is an example of one of the failed attempts:
083545 Tx 3056 ~ KH7Z G3WDG IO92
083630 -13 -0.5 390 ~ G3WDG KH7Z -15
083645 Tx 390 ~ KH7Z G3WDG R-13
083700 -16 -0.6 389 ~ G3WDG KH7Z -15
083715 Tx 389 ~ KH7Z G3WDG R-16
083730 -14 -0.6 330 ~ G3WDG KH7Z -15
083745 Tx 330 ~ KH7Z G3WDG R-14
083815 Tx 630 ~ KH7Z G3WDG R-14
083845 Tx 630 ~ KH7Z G3WDG R-14
083915 Tx 630 ~ KH7Z G3WDG R-14
083945 Tx 630 ~ KH7Z G3WDG R-14
084015 Tx 630 ~ KH7Z G3WDG R-14
084045 Tx 630 ~ KH7Z G3WDG R-14
After moving to 630 it stayed there and continued transmitting until I
intervened, thinking that the QSO had failed and I was unnecessarily causing
QRM.
Should I have waited longer for Fox to respond?
In the situation where hounds to not receive their RR73, presumably a
wall of QRM below 1000 develops for Fox making it more difficult for QSOs to
complete? I saw other stations in the same fix as I was, repeating their
TX3 messages for many periods.
73
Charlie
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