[Lowfer] 26. KHz Transmission
Clive S Carver
clive at ancient-mariner.co.uk
Tue Feb 1 14:00:18 EST 2011
I had hoped to have been able to have given a DF bearing (+/- 180 degrees)
using my Wellbrook LFL1010 and a homemade compass card with the UK Anthorn
transmission as a known reference.
However from my home location found that Anthorn's 19.6 KHz and 60 KHz
transmissions were not on same bearing! Guess the difference in frequency
and re-radiation from nearby overhead 132 kV power lines did not help.
Anthorn is only 120 miles away, so a good signal. My receiver being a SDR-IQ
Best guess was 280 - 320 degrees (or of course 100 - 140 degrees) from my
QTH 53-12N 003-02W
By calculation, Cutler NAA on 24.0 KHz is 285 degrees and in fact from here
most of the east coast of North America would be on a similar initial Great
Circle initial bearing.
One thing, whilst swinging the loop, noticed that both NAA 24.0 KHz and 26.0
KHz were nulling simultaneously on my SpectraVue display, which does suggest
east coast USA.
Has anyone managed a bearing from the US?
73's
Clive
GW4EYO
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