just read that Larry, VA3LK works on further improving his receiving
station after having been able to hear DCF39 33 dB above the noise last
If we find a reliable way to find out, when solar flares occur, we have a
real good chance of crossing the Atlantic even with our small ERP signals.
I know that Peter, DF3LP, was able to observe a flare the other day when he
recorded a constant signal of an LF time signal (HBG75 on 75 kHz). The
receiving level suddenly wend up by 10 or 15 dB above the normal and then
dropped slowly down to normal within half an hour or so. If we combine a
receiver's AGC voltage output to a voltage gate switch that is connected to
a bell, we should be able to have an alarm go off to indicate, that
conditions are above normal.
I still have a spare MV61 level meter with a voltage output in the 0 to 2
Volt range and will connect it to a voltage recorder. Lets see, if we can
correlate sudden increases of signal strength to occurances on the sun.
Vaino, you are quite experienced in recording field strenght data. Any
comment on that?
Geri, DK8KW (W1KW)