🚀 go-pugleaf

In article <1989Sep21.162329.2416@mentor.com> mbutts@mentor.com (Mike Butts) writes:

   Here's something I recently posted to rec.ham-radio:

	...

   I wonder if any DSP radio experts out there can comment on whether
   this chip, with an 80 kHz or so IF front end on the input and a DSP
   on the output might make a practical HF receiver, using the DSP for
   most of the selectivity, gain control, and demodulation?  Is it
   reasonable to use that low an IF?  Could you use both ADCs on the
   chip to alternatively sample a higher IF, like 160 kHz?

if you are already down to an if < 200 KHz, then you have either done
most of the work of getting the selectivity you want, or you haven't.
similarly, gain control must be done earlier.  demodulation can be
done digitally (certainly for fm), but there may well be better
digital demodulation methods than just digitizing and then (ds)
processing

--
ted@nmsu.edu
			Most of all, he loved the fall
			when the cottonwoods leaves turned gold
			and floated down the trout streams
			under the clear blue windswept skies.