From G3PLX:
If there's anyone within about 500km from me at 54N 3W (i.e. daytime surface
wave range) who could transmit a few micro-watts of very stable (preferably
GPS-derived) carrier on 136kHz, I would like to run some tests with my new
GPS-locked reception scheme to see how low we can go and still detect that
there's something there. It may take some time to detect the signal, but
with that sort of low power there shouldn't be too much problem with leaving
the transmitter on for a day. A quick calculation says that 25mA r.m.s. of
antenna current into an average antenna should produce plenty enough signal.
That's only 150v rms or so, depending on the antenna. The more stable is
the signal, the lower down I should be able to detect it.
Any one for QRPP?
73
Peter G3PLX
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