[R-390] R-390 AProduct Detector

[Dan Merz]

Hi,  I built and use the ss PD that Alex posted - works fine with better agc
than standard and a little better sound.  It's not going to make a big
difference in your 390 enjoyment unless you encounter strongly varying
signal strengths and don't like fiddling with the rf gain.  The agc in the
ss unit does much better than the normal 390 on ssb and the detector itself
can handle a bigger range of signal levels.  Dan 

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of AI2Q
Sent: Thursday, March 22, 2007 7:25 AM
To: Keith Densmore; r-390 at mailman.qth.net
Subject: Re: [R-390] R-390 AProduct Detector

Keith, take a look at mine at

http://users.adelphia.net/~alexmm/Prod_det/detector.htm

Vy 73, AI2Q, Alex in Maine
ARRL, FOC 1861, AWA, QRP-L 687
http://users.adelphia.net/~alexmm/ai2q.htm

----- Original Message -----
From: Keith Densmore
To: r-390 at mailman.qth.net
Sent: Wednesday, March 21, 2007 12:11 PM
Subject: [R-390] R-390 AProduct Detector


Hello All,
Now that I have the PTO aligned and stable its time for the next round. Does

anyone know of a 'known to work' schematic for an R-390A product detector? 
Either something solid state, something that uses a 6BE6 or one that uses 
the ballast tube socket would all be interesting to consider.
Thanks All, 73,
Keith, ve3ts 


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