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Ok Stefan
Yes , can see that peak , may be a
change to OP32 would decode in the day ? , if
nothing else it should extend the decode
windows ! but that would need a little
pre-warning to ensure all monitors have
changed over , would be interesting with the
band 'closed' to see if the extra dB's
+ time , managed to decode in the USA /Canada ,
but I assume dfc39 is monitored as
well , is it showing ?
73 -G..
Sent: Friday, July 20, 2012 11:31 PM
Subject: LF: TF3HZ
Am 20.07.2012 22:48, schrieb Graham:
More interesting are Stefan's 500 plot
and last night 's OP8 tests , with
the odd day time decode to TF3
...may be running OP32 , would decode at
TF3 during the day ,, he could be just
under the s/n limit using OP8
Graham,
take a look at Halldór's grabber http://simnet.is/halldorgudmunds/TF3HZ_LFgrabber/
The
wideband window gives an idea of the strength of DCF39 and so about the
propagation from Germany. You can see that the signal is strongest arround 0...2
UTC. There you can also see a trace of my transmissions in the spectrogram to
that time on 137.71 kHz
But there are times in the afternoon, e.g. 11 UTC,
where DCF is strong too. So this would be a slot for OP8 or QRSS-3...
73,
Stefan/DK7FC
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