Zenith 15U270

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

Zenith 15U270

rfeenstra
Phorum Expert

Posts: 1,199
Threads: 49
Joined: Oct 2017
City: Allendale, MI

05-31-2020, 04:54 PM

And here are after pics of the chassis. You will note an extra transformer next to the choke. I decided to install a bucking transformer under the chassis (Zenith gave plenty of real estate in this chassis). It brings my 121 volt line voltage down to 115 volts. I've heard from multiple sources that Zenith undersized the transformers and they run way too warm at today's voltages. I could drop it another 6 volts using the 12 volt tap for 109 volt operation. Any comments? I'm looking for advice on that issue! The radio will work at that voltage.

Oh, and one more question. You can see that the previous tech installed 2 caps in line with the antenna leads. For now, I left them in. I presume they were put in to isolate the radio from the antenna from some sort of voltage build up on the antenna. Any ideas?

(This post was last modified: 05-31-2020, 05:13 PM by rfeenstra.)

Find

« Next Oldest | Next Newest »

Thread Closed

Messages In This Thread

Zenith 15U270 - by rfeenstra - 05-31-2020, 04:45 PM

RE: Zenith 15U270 - by rfeenstra - 05-31-2020, 04:54 PM

RE: Zenith 15U270 - by morzh - 05-31-2020, 06:10 PM

RE: Zenith 15U270 - by rfeenstra - 05-31-2020, 08:06 PM

RE: Zenith 15U270 - by morzh - 05-31-2020, 08:39 PM

RE: Zenith 15U270 - by Eliot Ness - 06-01-2020, 08:07 AM

RE: Zenith 15U270 - by rfeenstra - 06-04-2020, 08:12 PM

RE: Zenith 15U270 - by sdradioman - 06-05-2020, 07:06 AM

RE: Zenith 15U270 - by rfeenstra - 06-05-2020, 10:12 PM

RE: Zenith 15U270 - by morzh - 06-05-2020, 11:44 PM

RE: Zenith 15U270 - by Phlogiston - 06-06-2020, 10:46 AM

RE: Zenith 15U270 - by rfeenstra - 06-06-2020, 11:23 AM

RE: Zenith 15U270 - by rfeenstra - 06-06-2020, 06:23 PM

RE: Zenith 15U270 - by Phlogiston - 06-06-2020, 08:56 PM

RE: Zenith 15U270 - by rfeenstra - 06-06-2020, 09:47 PM

RE: Zenith 15U270 - by Phlogiston - 06-06-2020, 10:34 PM

RE: Zenith 15U270 - by rfeenstra - 06-09-2020, 09:14 PM

RE: Zenith 15U270 - by PhilcoJohn - 06-10-2020, 08:27 AM

RE: Zenith 15U270 - by Phlogiston - 06-11-2020, 11:32 AM

RE: Zenith 15U270 - by rfeenstra - 06-11-2020, 03:31 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
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
5U4 vs 5Z4 tubes
The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM
Philco 42-345 Restoration/Repair
By the way. osanders0311 Take a look here: Dial cord stringing Guides May be here you can fount correct string settin...Vlad95 — 11:15 PM

Who's Online

There are currently 1037 online users. [Complete List]
» 1 Member(s) | 1036 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me