From:
[email protected]To:
[email protected]Date: Sun, 29 Dec 2013 17:56:01 +0000
Subject: Re: LF: VLF exciter / signal generation in Spectrum Lab
Thanks Wolf,
With the 8K signals out side the Op decoder ,
some users wanted to monitor the test ,
but needed a way of changing the qrg
slightly to match ,
The other thing , that occurred to me ,
was the other 75 K stations , may have a TA chance
using Op4H , +6 dB gain over op1H in the
'window' time , may be 1 run or 2 max
? ... recovering the 8K audio may be a problem
, my ra6790gm has a locked bfo range
of +/- 19KHz or so , but , for normal
ssb-rx , then a shift up from 1500 would
be needed [ may even catch Bob on 4H hihi]
73-G,
Sent: Sunday, December 29, 2013 1:25 PM
Subject: Re: LF: VLF exciter / signal generation in Spectrum
Lab
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.pdfThe
relevant chapter would be "Installation of in_AudioIO.dll as an ASIO
device".
Now back to the soldering iron..
73, Wolf
.
