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Old 11-16-2016, 04:48 PM
quaddriver quaddriver is offline
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Join Date: Jan 2007
Location: Moved to Pittsburgh to be closer to Primantis
Posts: 94
question about 1955 RCA 6-BX-63

Yes, this is a -63 and not a -6B

its a small suitcase portable using the 5 pin plug to the battery.

I got it working. On all the sets I ever did, this was the first one where the Se rectifier went on me. I replaced all the caps, a lot of wires, rewired the filament ballast, changed a lot of out of range resistors - had everything in stock. Went silicon with a 1N4007 and an additional 120ohms to drop the voltage near spec.

All along as I would test it (Im the king of jumper wires) the audio has had a fair amount of garbling.

This set is a 5 tube without a rectifier tube, making it essentially a 6 tube 'AA5', I found that the 3V4 was dark initially, so I swiped one from my bin. I found that the 1U5 had a short (hitting the test button on the tester would really make her glow) and one of the 1T4's in the RF amp had a lot of grid emission. fixed all that and it tunes across the band, I even did a poor mans alignment but cannot get rid of the garbling. I read somewhere, but cannot find out that adjusting the slug for the 1st audio (on this it would be 2nd detector/af amp) can clear this up, but im not seeing it, unless...I got the IF so far off base that there is no adjustment.

Since I could not find the sams, beitmans or rider, Im sorta going blind on this set.

anybody have a suggestion?
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