[LAD] Smallest, simplest, silliest SDR?

[Folderol]

On Sun, 28 Feb 2010 00:50:07 +0000
Gordon JC Pearce <gordonjcp at gjcp.net> wrote:

> On Sun, 2010-02-28 at 01:41 +0100, fons at kokkinizita.net wrote:
> > On Sun, Feb 28, 2010 at 12:40:00AM +0000, Gordon JC Pearce wrote:
> > 
> > > I wanted a very simple SDR with jack inputs and outputs for a
> > > demonstration I was doing.  I had a look at the DSP guts of dttsp and
> > > quisk, and sat down to code.
> > 
> > Forgive my ignorance, but what is an SDR ?
> 
> Software-Defined Radio.  Basically you downmix incoming RF to the audio
> range with two mixers fed 90 degrees out of phase.  You can then munge
> this in various different ways to tune and demodulate various different
> radio signals.
> 
> Gordon MM0YEQ
> 
Sounds suspiciously like some form of quadrature demodulator. Rather
like GEC/Sobel introduced with their 1018 TV chassis in the 1960s.
Oh how we laughed ...

-- 
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.