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

How Do I Disable Audio Muting Part of Magnetic Tuning?
#1

I'd like to disable the audio muting portion of the magnetic tuning feature in a model 38-3.  Can I do that by cutting one of the two wires in the attached photo? or by connecting the two wires?  I'm assuming those two wires are in the circuit.  Is that correct?

Thanks,
Larry


Attached Files Image(s)
   
#2

The contacts on the leaf switch are shorted together when you push the tuning leaver in. So, disconnecting one wire will disable the switch. On my 37, 38-116's, I like the fact that the audio is muted while tuning past a station with the auto tune.
#3

Thanks!  I re-furbished a 38-3 for a high school classmate in PA a couple years ago.  Some of the spring-loaded plungers in the cylinder were severely stuck.  I managed to get all of them retracted.  I didn't think I could get the mechanism working properly and was afraid a plunger would get stuck in a fully depressed position and limit manual tuning.  So I made the external lever non-functional (it couldn't depress a plunger).  That seemed ok here in TX but wasn't ok in PA when I re-installed the chassis.  I had to have the lever positioned just so to keep it from muting the audio.  He was able to use manual tuning but keeping the lever positioned to not mute the audio has become a headache.  So I'll just have him cut one wire.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM
IF can wire size and Rubber mounts?
Arran If the wire inside cans is the gauges you mentioned, the sole reason for that would be mechanical, to stiffen t...morzh — 12:56 PM
12' Philco
Rod, Yes, I know, but the Giant Philco is not around anymore either, so I go by whoever was alive fairly recently. H...morzh — 12:54 PM
Hickok AC51 tube tester
Absolutely no one is going to reverse engineer that circuit. Even the iron core is missing.RodB — 10:37 AM
IF can wire size and Rubber mounts?
Thanks to both members for your help regarding wire and tuner mtg supports. regards--Johngeorgetownjohn — 09:33 AM
Hickok AC51 tube tester
Note that no power cord, power switch, or power transformer switch are shown. That (along with my experience with full s...DaleHCook — 07:09 AM
IF can wire size and Rubber mounts?
A pair of wire strippers can give you an idea of what the existing gauge of the wire leads are in the IF can, I think it...Arran — 06:07 AM
My last cabinet for this year
Hello Dan, That is really beautiful what great looking radio you have ! I have friends who live in Calgary and the wea...radiorich — 01:51 AM

[-]
Who's Online
There are currently 5629 online users. [Complete List]
» 2 Member(s) | 5627 Guest(s)
AvatarAvatar

>