RCA 6K3 Preliminary Capacitor/Resistor Research
Posts: 172
Threads: 10
Joined: Mar 2026
City: Franklin
State, Province, Country: Maine
Mike,
It was of concern because while most of the other voltages were well within the 20% variability stated in the service notes, this one - at first 61V instead of the expected 100V - was a significant outlier.
Again, I don't have a good frame of reference as to what is normal for this period of radios, let alone this specific radio.
Would it be worth trying instead of the 22K value for R4, a smaller value? Would that have implications other than for the screen grids of these two tubes?
Best wishes,
Roy
Messages In This Thread
RE: RCA 6K3 Preliminary Capacitor/Resistor Research - by glyphmon - 05-26-2026, 07:57 PM
Users browsing this thread: 8 Guest(s)
|
|
Recent Posts
|
|
Philco 71 Code 125
|
| I jumped the gun and stand corrected.RodB — 12:53 PM |
|
Philco 71 Code 125
|
| Ok guys. Thanks for the input. As for AI this is why I ask the experts.
Dandconant — 07:39 AM |
|
Philco 71 Code 125
|
| Technically, that's C-. B- is chassis ground. The resistor between chassis ground and the HV center tap makes the HV c...MrFixr55 — 11:24 PM |
|
54C Cabinet Refinish
|
| hello Roy,
I’d follow Arran’s suggestion and use automotive gasket material, which I keep around for situations like th...radiorich — 10:22 PM |
|
Philco 71 Code 125
|
| This might be one of those cases where it's a ground to an AC voltage and B- to DC.RodB — 08:22 PM |
|
Philco 71 Code 125
|
| Really Rod? I know you would not steer me wrong but AI say this is a short circuit? What if I moved the 6 volt center ta...dconant — 06:40 PM |
|
54C Cabinet Refinish
|
| Roy;
Personally I would have left the asbestos alone if it were my set, but you can find a modern substitute that som...Arran — 04:51 PM |
|
Philco 71 Code 125
|
| Looks like that might be the B- buss, so that would be correct.RodB — 01:32 PM |
|
Philco 71 Code 125
|
| I noticed on the code 121 schematic the center tap for the 6 volt winding and hv winding are tied together. Is this corr...dconant — 12:16 PM |
|
Philco 45-6365 Universal IFT Instruction Manual
|
| The Philco Parts Catalog for 1942 shows it as usable for 175 kHz, 260 kHz, and 465 kHz. The instructions will show how t...DaleHCook — 11:19 AM |
|
Who's Online
|
| There are currently no members online. |
|

|