From G3PLX:
Alan:
When the LORAN master goes faulty (or is turned off for whatever reason),
the slaves blink the first two pulses at 3.5 sec intervals, which would show
as a filling-in of all the spaces between LORAN lines with extra lines at
about 0.3Hz spacing. I have seen this happen before (see previous postings,
May I think). However, I wouldn't expect this to show any 'clumping' effects
at a specific frequency. At various times the master may switch off or blink
it's 9th pulse, or even key it with morse code, but I wouldn't expect that
to show any spectrally-pure artefacts either.
Is it possible that it was an emission not related to LORAN at all? Just
something that produced similar-looking lines?
73
Peter
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