The end of the world is near...

[jr_tech]

Originally Posted by Electronic M

IIRC my 4 knober uses the all glass CRT AND has the 5U4-5Y3 dual rectifier set up....

So does mine! To me (having both at one time and running out of room), it was a pretty easy decision to keep the older 4 knob version and turn loose of the later version (pencil box) that had a weak (going gassy) metal CRT.

jr

[dieseljeep]

Originally Posted by jr_tech

So does mine! To me (having both at one time and running out of room), it was a pretty easy decision to keep the older 4 knob version and turn loose of the later version (pencil box) that had a weak (going gassy) metal CRT.

jr

The 4 knob version with the tube rectifiers, was a strange model for RCA. It has a 21MHZ IF and a penthode tuner, 6J6/6CB6. It must've been the BOTL model, that year.
The 4 knob version, with the voltage doubler, has the cascode tuner, 6BQ7A/6X8 and the 41MHZ IF.
RCA was an early player, with the 41MHZ IF.