[Milsurplus] BC-348-Q volume control

[Brian McQueen]

  Hello to the group. I’m un-modifying a -348 for a fellow ham. Someone in its life thought they’d play engineer and redesign the audio to transistor audio output, but left all tubes in place and live. I wondered how he kept the 6K6 from turning orange with nothing on the grid. Well, I found out: he supplied bias to the 6K6 by moving its wire to the B- lead on the receiver. -250 vdc bias should keep the output tube in cutoff...  At any rate, the original dual pot audio / RF gain control was removed and discarded.  I have gone thru my tote of rheostats to no avail. So I’m going for a long shot here and ask if anybody would have the critter on a parts unit or junk box. The resistances are 350,000 & 20,000 ohm. More than willing to pay all cost or, if you prefer, trade. I’ll my fingers crossed and keep ‘em glow in’!

Tnx es 73, Brian. WJ0P

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