Hmm, well.... I've done some tests on 1970 Hz and haven't come very
far. Just a poor signal in 5 km distance. But the QRM is very high
there. I think in your utilities assisted earth mode i will work some
km. Would be interesting about a QRO test ;-) I could use my LF TX
antenna and ground it at the far end, i would achieve a loop with 2700
m^2 but even that wouldn't be enough to reach the next amateur station
i think.
To many projects in the moment, like building up the LF stn and
improving the RX and so on. But maybe i'll go back to 1970 Hz if i can
do some better local tests on the earth antenna...
73, Stefan
PS: Sounds like i become old? No! ;-)
Am 05.05.2011 20:29, schrieb Roger Lapthorn:
If you use your earth electrode antenna Stefan you will
not need the coil. Try it and see how far it gets at this much lower
frequency?
73s
Roger G3XBM
2011/5/5 Stefan Schäfer <[email protected]>
Markus,
If you wind the coil, i'll try it!
Ah, BTW, a simple mains transformer would do the job! Driven by the H
bridge and SL as the driver. Trivial ;-)
73, Stefan
Am 05.05.2011 18:44, schrieb Markus Vester:
Hi Stefan,
that window looks like a challenge for your transmit earth
antenna as well ;-)
Best 73,
Markus
--
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