Dear John, LF group,
As well as GBR and HBG, there is also DCF77 (I think) on 77.5kHz
- this has similar 1-second ticks to HBG. Note that the signal
radiated by GBR around 73.25 changes at irregular intervals, often
several times a day, and often seems to be radiating two signals
simultaneously. Recently I have seen:
-No signal at all
-Single carrier some tens of Hz above or below the nominal
frequency
-two carriers straddling the nominal frequency
-various mixtures of RTTY-like data signals and carriers.
I think all these signals have ERPs of some 10s of kW, so would
have to be quite strong audible signals across the pond before
there is much chance of detecting 1W ERP or less amateur signals.
Good luck - will be interested to know what you can hear over
there.
Cheers, Jim Moritz
73 de M0BMU
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