Hi G.,
Am 22.09.2012 22:54, schrieb Graham:
Stefan
If you can generate the signal of your previous tests , I
don't think the range will be that short !!
Ooh, what was my previous test? I've done several previous tests in the
last 24 hours :-)
And please define short range :-)
Probably you mean VLF (?). Well, i know that OK2BVG received my
complete call in DFCW-600 on 8970 Hz, while i was using the fixed LF
antenna here and run 350W...500W RF power. So this is to be beaten.
OK2BVG is in about 600 km distance from me. So there are chances for UK
stations as well.
I think DF6NM or maybe DD7PC would be a good partner for first digimode
tests. Not to forget Paul Nicholson!
Am i right, ther was no OP4H VLF test so far at all? (I mean VLF tests
using RF systems, not a cable from the sound input to output).
Yes, it's definitely time for VLF again!
73, Stefan
Due to the long tx pulses of OP4 Hr , the signal will
also show on spec-lab , so test data is not lost , if decode
fails .
The software produces the 8K audio tone via the sound
card and has the com-port on/off keying output as well , normal
sound cards are suitable , the software inputs directly at 8K
using sound card as SDR
If you have a target date , I can post in the Op group
for monitor's
73-G.
Sent: Saturday, September 22, 2012 7:14 PM
Subject: Re: LF: Experimental software for WSPR-8 and -32
I'll give it a try Graham. The problem may be to find monitoring
stations in a short range...
73, Stefan
Am 22.09.2012 17:20, schrieb Graham:
And of course there is a 240 SDR data mode , all
ready for 8Khz tested to -50 dB as bench mark : )
Sent: Saturday, September 22, 2012 1:57 PM
Subject: Re: LF: Experimental software for WSPR-8 and
-32
Hi all,
Hmmm, theoretically we can generate every WSPR speed now. Markus,
should we try a WSPR-256 on VLF/ 8970 Hz? :-) I still have the big coil
in the cellar and the band looks fine :-)
Remember the "old" times... http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html
73, Stefan/DK7FC
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