[R-390] Product det

[fev]

Please Bernie , send me your scanned article .
Thanks,
Francisco LU3EEC
-----Mensaje original-----
De: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
En nombre de Bernie Nicholson
Enviado el: Jueves, 24 de Junio de 2004 09:15 a.m.
Para: r-390 at mailman.qth.net
Asunto: [R-390] Product det 


I have sent the scanned HAM RADIO article to 35 respondents so far ,The
circuit works well but I havnt tried the noise limiter mod ,also I have
used a 12AU7 double triode prod det circuit and it works even better I
mounted it in the 3TF7 socket and substituted 12BA6 tubes fer VFO&BFO
this also works well I used a subminiture relay to switch the audio
lines it had a 9K coil and I put 22K in series to HT When u switch off
the bfo the circuit reverts to the original fer recieving AM , I had a
few spare IF modules so I can unmodify it pretty easily, Kind Regards To
every one 
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