LF,
I want to call for CW skeds now,i.e. for tomorrow morning.
After testing the UHF link today i was impressed by the silence of the
LF band when beeing in the forest with the loop! The band noise is about
15 dB above the soundcard noise now, which is OK for today but not for a
quiet winther sundday morning. BTW i built M0BMUs loop preamp and it
works excellent too! Still have to compare the homemade RX to the
706+preamp...
DCF39 peaked 80 dB S/N in 1.5 Hz. The sferics were much louder compared
to the background noise. Inbetween the sferics, CW reception would have
been possible. I even heared some short beeps, probably someone was
testing without hearing my call.
The UHF link works excellent! About 1 W RF power to a homemade 1/4 wave
wire on the car roof was totally enough to reliable key the PA. Even
normal CW is possible without problems. Just a few times the squelch
opened unwanted.
When installing a large RX loop in the trees, resonated and matched to
50 Ohm, i can make a tour with the bike and just the netbook and the
homemade RX (fed by the USB) and another 70cm mobile QRP TRX.
Tomorrow morning i want to do another test even farer away from the
city, about 5 km, where my earth antenna is placed. I'll take the single
turn loop again with me.
I hope to get a QSO partner then.
Will try to do something with the earth antenna as a RX antenna. A small
PI filter should match and band limit the whole thing... 800 to 50 Ohm.
Is someone QRV tomorrow? Ah, i think about 8...9 UTC... Other
suggestions? (no, no other hobby).
73, Stefan/DK7FC
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