Adding AVC Mod to Philco 70

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

Thread Closed

Thread Rating:

1 Vote(s) - 5 Average
1
2
3
4
5

Linear Mode

Adding AVC Mod to Philco 70

Ron Ramirez
Silent Key

Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana

#63

06-23-2019, 07:16 PM

(Almost) Final Touches

I can't get to my VTVM right now (long story so I'll spare you), but a quick alignment by ear brought up the high end of the 70 nicely. While it picks up the 600 kc signal from the signal generator very well, on antenna the low end seems...well...very low.

Oh, and now it requires the tube shield to be in place to prevent the unit from squealing (oscillating). Which, I think, is a good thing.

Rob, I would be most interested in reading more details on how you went about bending tuning cap plates to achieve more uniform response across the AM band.

--
Ron Ramirez
Ferdinand IN

Find

« Next Oldest | Next Newest »

Thread Closed

Messages In This Thread

Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-26-2019, 02:35 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-26-2019, 02:42 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-26-2019, 02:51 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-26-2019, 02:58 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-26-2019, 03:07 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-26-2019, 03:11 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-26-2019, 03:14 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 05-26-2019, 05:11 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-27-2019, 11:18 AM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 05-27-2019, 02:13 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 05-27-2019, 02:25 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-27-2019, 02:36 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 05-27-2019, 02:53 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-27-2019, 03:54 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-27-2019, 04:01 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 05-27-2019, 04:15 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-27-2019, 04:57 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-27-2019, 05:16 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 05-27-2019, 05:42 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-27-2019, 05:57 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 05-27-2019, 06:55 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-27-2019, 07:17 PM

RE: Adding AVC Mod to Philco 70 - by KCMike - 05-27-2019, 08:52 PM

RE: Adding AVC Mod to Philco 70 - by Steve Davis - 05-28-2019, 11:22 AM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 05-28-2019, 11:52 AM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 05-28-2019, 03:12 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 05-28-2019, 04:03 PM

RE: Adding AVC Mod to Philco 70 - by Steve Davis - 05-28-2019, 05:06 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-01-2019, 10:35 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-01-2019, 10:48 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 06-01-2019, 10:59 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-01-2019, 11:14 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-02-2019, 07:59 AM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 06-02-2019, 09:16 AM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-02-2019, 09:56 AM

RE: Adding AVC Mod to Philco 70 - by jake wells - 06-02-2019, 11:41 AM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 06-02-2019, 12:10 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-02-2019, 12:32 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-02-2019, 09:50 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 06-02-2019, 11:45 PM

RE: Adding AVC Mod to Philco 70 - by Radioroslyn - 06-03-2019, 08:28 AM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 06-03-2019, 08:30 AM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-03-2019, 08:37 AM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-08-2019, 09:36 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-08-2019, 10:00 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 06-09-2019, 09:14 AM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-09-2019, 09:25 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-15-2019, 10:34 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-16-2019, 02:00 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 06-16-2019, 02:14 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 06-16-2019, 03:58 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-16-2019, 04:13 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 06-16-2019, 04:38 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 06-17-2019, 09:32 AM

RE: Adding AVC Mod to Philco 70 - by Steve Davis - 06-17-2019, 03:38 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-23-2019, 08:45 AM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 06-23-2019, 09:15 AM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 06-23-2019, 09:23 AM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-23-2019, 03:31 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 06-23-2019, 04:34 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-23-2019, 05:27 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-23-2019, 06:32 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-23-2019, 07:16 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 06-23-2019, 07:22 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 06-23-2019, 08:40 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 06-24-2019, 12:02 AM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 06-30-2019, 07:02 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 10-07-2019, 10:15 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 10-08-2019, 12:22 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 10-08-2019, 02:09 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 10-13-2019, 09:07 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 10-13-2019, 11:33 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 12-26-2019, 08:13 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 12-26-2019, 08:26 PM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 12-26-2019, 10:19 PM

RE: Adding AVC Mod to Philco 70 - by rfeenstra - 12-26-2019, 10:27 PM

RE: Adding AVC Mod to Philco 70 - by Ed Locker - 12-27-2019, 10:46 AM

RE: Adding AVC Mod to Philco 70 - by Ron Ramirez - 12-27-2019, 11:49 AM

RE: Adding AVC Mod to Philco 70 - by Steve Davis - 12-27-2019, 02:08 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
Philco 42-345 Restoration/Repair
Ok MrFixr55, I have tried the DeoxIT D5 on the band switch and even though it has relieved the tension I felt when turn...osanders0311 — 11:11 AM
Part numbers to model cross
Is there a reference somewhere where you can punch in Philco part numbers and see what models those parts were used in?Jim Dutridge — 10:17 AM
Philco 42-345 Restoration/Repair
Hi OSanders, Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM
5U4 vs 5Z4 tubes
I think that RCA and GE introduced metal tubes in the USA in 1936. I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM
Philco 42-345 Restoration/Repair
Vlad95, Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM
5U4 vs 5Z4 tubes
A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM
Philco 42-345 Restoration/Repair
Thanks Rod, "When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM
Philco 42-345 Restoration/Repair
RodB :beerchug:Vlad95 — 10:22 AM
Philco 42-345 Restoration/Repair
Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM
5U4 vs 5Z4 tubes
Well this is a Hallicrafters SX/9 circa 1936. No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM

Who's Online

There are currently 1542 online users. [Complete List]
» 1 Member(s) | 1541 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me