For computer interfacing, I'd prefer a digital output - after the ADC
and DSP filters (?), but before detection. I suppose a USB ADC card
connected to the analog IF would work, if you could find one that does
continuous sampling and that's reasonably priced. The 14 kHz IF
probably goes too high for a sound card to handle well. What are the
actual passband limits?
73 Martin AA6E
On 5/5/05, Mark Erbaugh <mark@microenh.com> wrote:
> > After they get the serial port fixed up, I'd like to see a proper
> > digital interface for audio in/out (S/PDIF or your choice). After
> > that's working, how about 14 kHz digital IF outputs? You'd need a
> > little more hardware, but not much. (Could somebody make an add-on
> > board?) These functions would open a world of options for
> > computer-based operations.
>
> It's not that difficult to get teh 14 kHz IF out of at least the
> sub-receiver. I built up a Y cable that I plugged in between the 14 kHz IF
> and the SPARE jack on the back. I think the same could be done with the
> main receiver, but it's on a different board, the subreceiver board is
> adjacent to the jack for the SPARE jack. Also I use it for decoding DRM on
> shortwave broadcasts.
>
> At one time, TenTec was talking about making up some Y adapters for this
> purpose. I've not heard anything further.
>
> 73,
> Mark
>
>
--
martin.ewing@gmail.com
http://blog.aa6e.net
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