Re: SDR HF transceivers (well-)supported by debian?
On Mon, Dec 05, 2016 at 06:27:30PM -0500, David Rysdam wrote:
> "Andrew M.A. Cater" <amacater@galactic.demon.co.uk> writes:
> > Sounds like GNURadio, Quisk and Linrad potentially support this with no
> > problem - so you probably don't need Winlink at all.
>
> This would be even better.
>
> > Putting Softrock Linux into Google gave some promising links, at any
> > rate - though a couple of links were dead, there was a link to a newer
> > page with some info.
>
> Yeah, I found those. I was hoping someone on this list would have more
> solid info.
>
> > This is _low_ power - so you might also want to talk to the QRP
> > folks for hints and tips. Best quality antenna and, potentially,
> > an acceptance of relatively limited range.
>
> Why is it QRP? Wouldn't the next stage be an amp, which could be to any
> level?
This is designed to be fairly easy to build and is built down to a cost,
as it were.
It's designed for a couple of watts out - which is about comparable with
the ultimate receiver sensitivity.
In some sense, you don't want an alligator - all mouth and no ears - so
an amplifier needs to be scaled. There's also the question of a
relatively simple TX design - I'm not quite sure what the harmonic
suppression is, but you might need to check - harmonics etc. are
relative to power output. 40dB down on 5W is very different harmonic
suppression to 40dB down on 1kW.
If the receiver isn't the ultimate in sensitivity - any good, matched
antenna will help get more signal into the receive front end.
Hope this helps - it's a personal view and I'd be more than happy to
be proved wrong.
Andy C
G0EVX
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