Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

philco 37-620 code 125
#11

I have read about by-passing defective IF stages using a capacitor to connect the plate of one tube to the grid of the next and by-passing the open winding with a resistor. Would this work for an RF stage? There would be some loss of performance I would assume, but it would be way better than what I have now. Can this done? Mark


Messages In This Thread
philco 37-620 code 125 - by MarkinK-zoo - 02-01-2020, 08:39 PM
RE: philco 37-620 code 125 - by klondike98 - 02-02-2020, 01:30 PM
RE: philco 37-620 code 125 - by Chas - 02-02-2020, 03:07 PM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-02-2020, 05:07 PM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-03-2020, 11:10 AM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-03-2020, 11:20 AM
RE: philco 37-620 code 125 - by Chas - 02-03-2020, 11:46 AM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-03-2020, 11:57 AM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-03-2020, 11:58 AM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-03-2020, 12:12 PM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-03-2020, 03:52 PM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-03-2020, 04:09 PM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-04-2020, 06:36 PM
RE: philco 37-620 code 125 - by harley92 - 02-06-2020, 09:28 PM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-08-2020, 12:00 PM
RE: philco 37-620 code 125 - by MarkinK-zoo - 02-17-2020, 03:17 PM
RE: philco 37-620 code 125 - by harley92 - 02-17-2020, 08:56 PM
RE: philco 37-620 code 125 - by harley92 - 02-17-2020, 09:00 PM
RE: philco 37-620 code 125 - by harley92 - 02-17-2020, 11:53 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Refinishing Ideas
Hi Poulsbobl, I think that you could get away with it.  In the Philco Library, there is a parts listand specs for sp...MrFixr55 — 11:54 PM
Philco 46-480 Electronic Restoration
The sleeving for the transformer arrived early, so I went ahead and finished reassembling. The chassis looks far better ...jrblasde — 10:15 PM
Philco 610B oscillator wiring
I don't know what you are referring to when you say "tube cathode ground". Ground is a connection to the chass...RodB — 05:56 PM
Zenith H725
Good points, Arran. I haven't encountered this problem with any other radio (all earlier vintages), so am learning here....EdHolland — 05:32 PM
Zenith H725
Ed; One thing that I will say about these is that Brand Z was considerate enough to make these mica caps easily acces...Arran — 02:34 PM
Philco 610B oscillator wiring
Do you know what run # your chassis is? It took me a while to find what you were basing updates/modification on as I did...Radioroslyn — 07:34 AM
Need to purchase some accessories for restoration of my Old Philco Radio
COLLEAGUES, Thank you all for such good and important suggestions as how to find good replacement parts. I will go fo...palonso — 07:05 AM
Zenith H725
Here's what the inside of AM IFT2 looked like, and the other pic shows the discs I made to take place of the mica and ke...EdHolland — 07:40 PM
Zenith H725
IF2 will need replacement caps. The arcing was severe enough that the mica is pitted and holed where the HT flashed over...EdHolland — 04:04 PM
My Philco 37-116 Restore
Measuring from center tap like the tube voltages show. Cap 127 is isolated from ground. Cap 127 shown in upper left of p...dconant — 08:05 AM

[-]
Who's Online
There are currently no members online.

>