RadioBanter - View Single Post

November 16th 04, 12:17 AM

On 15 Nov 2004 18:34:05 GMT, (Stan Barr) wrote:

On Sun, 14 Nov 2004 23:02:15 -0700, matt weber wrote:
Regen can handle SSB, in practice it cannot due to lack of a stable
carrier, lack of a product detector, and inadquate sensitivity.

Of course a regen rx can handle SSB. My 3-tube set works fine on the 80m
and 40m ham bands. Naturally, the tuning needs an occasional tweak but
once it has warmed up it will stay on an ssb signal for quite some time.
Selectivity is not an issue - that is done at audio like a direct conversion
set. Tests by ZL2JJ have shown a good regen receiver to be as sensitive as
many modern superhets.

The German military were using regen receivers* right through WW2 for
AM and CW reception and if you can resolve CW you can handle SSB.
WRONG! There is no requirement that that the envelope detector be
linear. BFO and a Diode detector will work just fine for CW. It
doesn't work very well at all on SSB unless the BFO signal level is
much much greater than the SSB signal level.

Phase and waveform distortion have no impact the ability to receive
CW. They have a pretty serious impact on the SSB quality.