[Boatanchors] AM reception on a regen???

[Al Klase]

kwylow zinjanthropus wrote:
> Can anyone please describe AM reception on a regenerative rx? 
I suspect it is much like putting the BFO on while receiving a
foreign SW broadcase but to tell you the truth, that's just 
a guess.
Let me know and thanks. Cal, N6KYR.

There are two distinct modes of operation for such a 
receiver.  Regenerative (not oscillating) and autodyne 
(oscillating). That's why there is a regeneration control to 
adjust the feedback.

Autodyne detection is used for CW and SSB while 
non-oscillatory regeneration is used to amplify AM signals 
and increase selectivity through Q multiplication.

The common proceedure is to push the detector into 
oscillation, and conduct a "heterodyne search" to find the 
station.  Then the regeneration is backed off.  Strong AM 
signals may actually cause the oscillating detector to lock 
to the carrier.

You ought to build one of these things for your edification 
and enlightenment.

Regards,
Al




-- 
Al Klase - N3FRQ
skywaves@bw.webex.net
Flemington, NJ 08822
Web Page:  http://www.webex.net/~skywaves/home.htm