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

Philco 46-200 Code 121 drifts....
#1

Hi,
Trying to help a friend with this radio. I looked up what should be the schematic and tube location but that one shows a couple of 14 volt tubes where mine use all 7 volt except for the rectifier and output.
Anyway the radio works great with the exception of the fact that it tends to drift slowly off station after playing for some
time.. maybe an hour or more roughly speaking. If you correct it several times and then turn it off it, of course, will come
on next time considerably or entirely off station.
What usualy is the cause? Is it the converter tube itself (which number) or likely to be one or more capacitors?... and which might be most likely?
Thanks very much... I haven't been on here for many months and then was a newbie ... really sorta still am. Hope to return
sometime and work further on that project I started many months ago but first the radio at hand, ha.
BTW.. Happy Thanksgiving to all :-)
#2

Hi

While C403 might be suspect...to be honest, what you describe sounds like normal operation to me. In my experience, many vintage radios tend to drift slightly after they have warmed up for awhile.

Oh, and Model 46-200 Code 121 uses the following tubes: 7A8, 7B7, 7C6, 50L6GT, 35Z5GT. Code 125 sets change the 7B7 to a 14A7, the 7C6 to a 14B6, and the 35Z5GT to a 35Y4.

--
Ron Ramirez
Ferdinand IN




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM
40-150 General questions
Good thing you're a good electrician ... the pictures show a lot of rewiring in your future! Take care and BE HEALTHY!...GarySP — 11:52 AM
40-150 General questions
I think RobB has it right. It is a part number and looks like its stamped on the chassis and that wasn't something you ...klondike98 — 11:41 AM
40-150 General questions
It's most likely a part number. Most of Philco part numbers are in that format. I looked at the parts list for this mode...RodB — 08:10 AM
40-150 General questions
Hi Kevin, No, I don't but I like your Quote about being a good electrician. The way I look at it is "The fact ...MrFixr55 — 08:06 AM
Philco 38-7 Speaker
7K should be fine. While not a perfect match (This transformer is meant for 6V6 tubes), Antique Electronic Supply (AES)...MrFixr55 — 08:03 AM
40-150 General questions
I discovered a stamp on the underside of the breadboard on my Philco 40-150. It is"56-1417' in black ink with numbe...Kevin_D — 07:14 AM
Philco 38-7 Speaker
FYI the Impedance of the HR20 (the one I have) secondary of the audio transformer is 5 ohms. The 38-7XX speaker is suppo...tludka — 04:22 PM
Philco 38-7 Speaker
Yeah, don't use the transformer currently on the H-20 (Dopf, I thought "H20, is that new technology, a speaker usin...MrFixr55 — 03:51 PM

[-]
Who's Online
There are currently 2762 online users. [Complete List]
» 2 Member(s) | 2760 Guest(s)
AvatarAvatar

>