Message-ID: <4E67BA86.80204@iup.uni-heidelberg.de>
Date: Wed, 07 Sep 2011 20:40:06 +0200
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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Subject: Re: LF: beaconing to the west II ...and to the east, north and  
  south...
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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...
>