George Vastianos schrieb:
as i understood stefan will mainly transmit on dfcw-600 right???
so is the 9kHz_4mHz.usr suitable for grabbing????
Yes, I think from DL to SV only 600-second-symbols (like DFCW 600) may
work .. with a LOT of luck ... but absolutely no chance with DFCW 60 or
similar. The 9kHz_4mHz setting has a waterfall scroll interval of 60
seconds, so a 600 second long "element" (dash or dot in DFCW) will be
about 10 pixels on the screen. This is adequate for DFCW600.
Beware, the ALPHA transmitters have been switched off again, so you will
have to use one of the MSK-modulated VLF transmitters to lock the
soundcard's sampling rate, or -if that doesn't work because the signals
may be too weak- leave the soundcard running for a few hours before the
test, so it doesn't drift too fast during the experiment. For example,
the E-MU 0202 used here (if the SDR-IQ is not in use), it needs an hour
to 'stabilize' sufficiently.
73,
Wolf .
(also receiving from a portable site tomorrow morning; without internet
connection).
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