Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

MODEL 43 - PROBLEMS WITH TUNING CAPACITOR
#1

Hi,

I just finished re-capping the electrolytic and filter bank capacitors, and fired up the radio and was pleased to see a marked improvement (thanks for the assistance of my online mentor, John Goller!)

However, on the AM broadcast band, once I tune past 1050 kHz, I only get awful crackling. The problem seems to be with the rotor/stator plate spacing. I tweaked a couple, and the crackling changed to a consistent, well, sound like a fly passing gas, if a fly could do that.

I notice the plates are very close together. I can't seem to fix the problem.

I have two questions:

1) Are the rotor plates supposed to be centered with respect to the stator plates, or to one side, close to them?

2) If they are supposed to be centered, how can I do that?

Any and all suggestions are welcome!


Messages In This Thread
MODEL 43 - PROBLEMS WITH TUNING CAPACITOR - by jhgrahamjr - 12-21-2014, 08:11 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM
54C Complete Teardown/Rebuild
The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM
54C Cabinet Refinish
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM

[-]
Who's Online
There are currently 4371 online users. [Complete List]
» 2 Member(s) | 4369 Guest(s)
AvatarAvatar

>