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 38-C7-A Canadian Set
#1

A neighbor brought me the chassis out of a "family" radio and has asked me to make it operative. Here's the chassis tag information:
38-C7-A
Code 121
115 Volts
25-40 Cycles
70 Watts


The kicker is that he says he remembers then Canada changed from the 25-40 cycles to 60 cycles and that the set was converted (also says he remembers it playing with the new Canadian 60 cycles in the 1960's.

I've tried to research this and it seems their power company made free conversions back in the day from 25-40 cycles to 60 cycles at a cost of over $5,000,000. I've also read, but have a hard time believing, that you can run a Canadian set with the 25 - 40 cycle transformer on the newer 60 cycles because the earlier transformers were heavier and dissipated the heat OK. Not sure what to believe, so I need help! Also, IF (BIG IF) the set had been converted, it would seem the only thing that would have been changed would have been the transformer... Would that be right AND how can I tell IF that has been done? I'm out in the woods on this set and sure could use some help and input, PLEASE!
#2

Most 25 cycle sets will fun fine on 60 cycles, but after you recp it check to see B+ and filament voltage is more than 10%higher than it should be. If so you can add a small bucking transformer or resistor to bring this back in line.
#3

Thanks for that information! Wonder how warn the transformer would get?
#4

Restored the chassis this past weekend and it plays very well. Thanks! Icon_biggrin




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Need Help to ID this radio 11 tube Philco
Yes the 16B as morzh pointed out. Specifically its the January 1935 model version of the 16B. There are a couple earli...klondike98 — 11:51 PM
48-482 rear panel help
Welcome to the Phorum, keithchip! How far you take a radio on cabinet restoration is a matter of personal preference. ...GarySP — 11:28 PM
48-482 rear panel help
I've recently finished the internal restoration of a locally purchased Philco 48-482. The cabinet is in ok shape except ...keithchip — 10:28 PM
Need Help to ID this radio 11 tube Philco
Welcome to the Phorum, Ken! Lots of help here for all of your restoration questions. Take care and BE HEALTHY! - Gar...GarySP — 07:59 PM
Need Help to ID this radio 11 tube Philco
Thank you. I went to your online library and found 2 schematics. I will download and compare to components!Ken D. — 06:31 PM
Need Help to ID this radio 11 tube Philco
It is a 16B tombstone.morzh — 06:13 PM
Zenith H725
David - sorry, I reread your post and finally saw THD - now the % figures make sense. Thanks for explaining. The PSU...EdHolland — 06:06 PM
Need Help to ID this radio 11 tube Philco
Hi Everyone, New member but have been reading this for awhile for tips! Vaccum tubes were before my time so bear with ...Ken D. — 06:03 PM
My Philco 37-116 Restore
Thank you MrFixR55, I appreciate your comments very much. I do not detect much hum if any so I will be staying with the ...dconant — 05:15 PM
My Philco 37-116 Restore
Hi DConant Yes, you can replace chokes with resistors.  You do stand the risk of increased hum.  the solution is to inc...MrFixr55 — 04:23 PM

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

>