[Lowfer] 26. KHz Transmission
ToddRoberts2001 at aol.com
ToddRoberts2001 at aol.com
Tue Feb 1 17:32:22 EST 2011
In a message dated 2/1/2011 1:59:47 P.M. Eastern Standard Time,
clive at ancient-mariner.co.uk writes:
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
Hi Clive,
>From what I can determine so far the 26.0 signal is coming from the
East of USA, possibly somewhere in Europe. The signal is very weak
in Eastern USA during the daytime, but as darkness approaches the
signal greatly increases in strength, consistent with a signal from Europe.
When the signal was weak midday here in the USA on Monday it was still
strong on the DF3LP spectrum display in Germany.
I am hearing the signal right now at 2230UTC.
73 - Todd WD4NGG
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