[R-390] 390a

[Bernie Nicholson]

Hi everyone I was wondering if anyone has carried out mods as per =
electric radio mag / competition grade 390A  reciever   .  I have just =
read it and feel a bit enthused  I do have the test gear to evaluate the =
mods  ,I wonder  ?????  ,on another note I have just modified a spare IF =
module to accept a set of upper and lower sideband assyametrical filters =
I removed 2+4khz filters and substituted new filters and removed bfo =
coil and reconected as a crystal osc on 455khz  substituted 12ba6 tubes =
in bfo and VFO and used 3tf7 socket as a double triode product detector  =
12au7  and connected a high resistance relay to switch the audio lines =
through the prod detector when u switch the BFO on and it works =
magnificently ,I am just still playing around with AGC time constant to =
better suit SSB , I AM ITERESTED TO HEAR FROM ANYONE ELSE WHO IS =
PREPARED TO PERFORM MAJOR SURGERY HI  Regards to all Bernie Nicholson =
Vk2ABN


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