Hi Bill,
Am 07.09.2011 20:24, schrieb Bill de Carle:
Stefan:
Just to be sure everything was OK, I transmitted (using a ferrite rod
Tx antenna!) a marker at 136170.000 Hz and to my surprise, it showed
up on your version about half a Hz low! I had not entered a close
estimate for the 48000 sampling rate and apparently SL locked onto
something else?
Actually i disabled the sampling rate detector and so it doesn't lock to
anything. It must be due to a different offset.
I measured the actual sample rate at 48000.10944, entered that and
thereafter the displayed line jumped right up to 136.170 Khz. My usr
uses 22050 (which is actually 22200.0653), but I had already typed
that in last night.
Ah right, that's the reason of course. And of course i cannot know your
soundcards offset at that sample rate and prepare the file ;-)
I'm not sure how Windows XP handles things when two applications are
inputting simultaneously using different sample rates.
My LF and VLF grabbers ( 2 PCs) run XP. The 8970 Hz files use 24 kS/s,
RSDN-20 uses 30 kS/s and wideband uses 48 kS/s without any problems :-)
I am using V2.77 b02 of Spectrum Lab for this test.
Oh, 2.77 b02. There is already a b2 version? :-)
73, Stefan/DK7FC
73,
Bill VE2IQ
At 01:53 PM 9/7/2011, Stefan wrote:
Thanks Bill ;-) The webpage looks fine! :-)
At G4WGT i can see Mal TXing nearly 136.172. Will he join in? Oh, it
seems i really have to finish that PA supply ;-)
Looking forward to that evening! Unfortunately there will be some
rain it seems. That may cost a dB or so...
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