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Re: LF: VLF exciter / signal generation in Spectrum Lab

To: [email protected]
Subject: Re: LF: VLF exciter / signal generation in Spectrum Lab
From: wolf_dl4yhf <[email protected]>
Date: Sun, 29 Dec 2013 14:25:27 +0100
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Hello Graham,

Am 29.12.2013 14:04, schrieb Graham:
Wolf,
 
Q How to  configure  SL  as audio  frequency   changer ?  
 
say   1500 Hz to  8 KHz , or , 8100 to  8200   etc
 
how is the  set  up  ?

The easiest way is using the 'narrowband filter', which can also shift frequencies.
Start by selecting 'Quick Settings' in the menu, then 'Other amateur radio modes', 'Narrow CW filter with adjustable xyz'. You can see the filter's passband on the main frequency scale, along with the 'zero beat' indicator similar to a web sdr. Grab the passband widh the mouse and move it to the 'source' frequency range. Alternatively, enter the frequency shift in numeric form on the filter control panel. Details:

http://www.qsl.net/dl4yhf/speclab/filters.htm#filter_controls_on_main_freq_scale


 
 
will SL  appeared as a  sound  source  ?
It can, but unfortunately only as an ASIO device. Microsoft's ever-changing driver model is so utterly complex that I gave up writing my own 'multimedia driver'. Also I didn't feel like re-inventing the wheel for XP, Vista, Win7, Win8, and whatever-comes-next...  :o)  Thus the easiest (??) method would be to use Virtual Audio Cable.

The more complex (but VAC-less) way, if ASIO is supported by the audio-receiving application, is decribed in the 'Audio I/O' manual:

http://www.qsl.net/dl4yhf/AudioIO/AudioIO_Manual.pdf

The relevant chapter would be "Installation of in_AudioIO.dll as an ASIO device".



Now back to the soldering iron..

73,  Wolf .


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