FM Alignment of 48-482

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

Linear Mode

FM Alignment of 48-482

Sean
Member

Posts: 150
Threads: 4
Joined: Oct 2005
City: Sullivan, MO

01-05-2010, 09:50 AM

I got the hum issue solved. It turned out that the 7F8 was modulating its local oscillator signal with hum. I replaced the tube and the problem went away. I'm guessing there is some heater-cathode leakage.

I am now buttoning up this set. I would like to reproduce the FM line aerial that was originally on these sets (Z100 on the schematic). I am assuming it is just a plate of thin sheet metal wrapped around the power cord. Is this correct? Does anybody have one of these sets that still has the original line aerial on it?

Sean
WØKPX

Find

« Next Oldest | Next Newest »

Thread Closed

Messages In This Thread

FM Alignment of 48-482 - by Sean - 11-21-2009, 11:06 AM

Re: FM Alignment of 48-482 - by Ron Ramirez - 12-01-2009, 08:29 AM

Re: FM Alignment of 48-482 - by Terry Judkins - 12-03-2009, 10:53 PM

Re: FM Alignment of 48-482 - by Sean - 12-05-2009, 05:21 PM

Re: FM Alignment of 48-482 - by DCASAZZA - 12-10-2009, 09:38 AM

Re: FM Alignment of 48-482 - by Don Lind - 12-12-2009, 02:27 PM

Re: FM Alignment of 48-482 - by Sean - 01-05-2010, 09:50 AM

Re: FM Alignment of 48-482 - by Ron Ramirez - 01-05-2010, 11:08 AM

Re: FM Alignment of 48-482 - by Sean - 01-09-2010, 02:08 PM

Re: FM Alignment of 48-482 - by Ron Ramirez - 01-09-2010, 03:06 PM

View a Printable Version

Users browsing this thread: 4 Guest(s)

Recent Posts
New member
Good picture, When was it taken? You don't look in it like a guy who has a teenage son :)morzh — 06:13 PM
New member
Love the pic! I'm southern IL, so wouldn't be much help and Bob Anderson is very good on those, but lives in Chicago are...TV MAN — 05:25 PM
Philco 40-120C Filament Wiring
:thumbup:klondike98 — 04:56 PM
Philco 40-120C Filament Wiring
With these values I think you are OK; the Cmax for this tube is 40uF. Your Vbb could rise a bit, but probably not too mu...morzh — 04:53 PM
Philco 40-120C Filament Wiring
BTW, someone had replaced the original 20uF/20uF filter cap with a 47uF/33uF cap. Do you think these values are safe on ...bluecap — 04:33 PM
Philco 40-120C Filament Wiring
You're correct. I was misinterpreting the key position. I now know where it is, and things are making sense. I appreciat...bluecap — 04:29 PM
Philco 40-120C Filament Wiring
I think Morzh has a good thought. Check the key position. The under chassis diagram in the Philco info shows an “H” for ...klondike98 — 04:25 PM
Philco 630csx power cord
Yes, the third wire goes to the stud on the side and is separate from the other two. I've usually used cloth covered ...Tynwald — 03:09 PM
New member
Have you tried Alabama Historical Radio Society? They possibly could recommend someone. I remember a name of Dee Hanes...morzh — 03:08 PM
Philco 46-480 Electronic Restoration
Nope, he can’t tell me the dimensions. Looks like I won’t be buying it.jrblasde — 02:38 PM

Who's Online

There are currently 4099 online users. [Complete List]
» 1 Member(s) | 4098 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me