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

Thread Closed

Mystery Control receiver
#27

I'm still stuck on this one. I just cant get the D**n thing to respond to a signal further away then a foot from the secondary coil.


There are three coils that you adjust to set the frequency for the remote you are using. The set I am working on is a Control 5 set which is 355khz. Two of the three coils respond (make a difference) when you adjust them. The one that doesn't seem to make any difference is #74 on the schematic. It is one coil that controls the grid on the 2A4G Thyratron tube. The coil ohms out fine, and I have changed the mica cap out, the wiring has also been replaced for all the coils in the radio.

I have double, triple, even quadruple checked the wiring and I cant find anything wrong. I even have another untouched un-restored 39-55 chassis here to compare things to. All of the caps and resistors have been replaced in the radio. Voltages on all the tubes in the MC section test out fine as do the tubes.

I even tried the antenna from the 39-55 on my 39-116 and it works fine with a remote out to about 6 feet which is as far as I have tried it.


Any and all help is welcome. Few more hours on this thing and I think ill have to give up.

-Keith


Messages In This Thread
Mystery Control receiver - by Keith - 06-05-2012, 12:50 AM
RE: Mystery Control receiver - by Ron Ramirez - 06-05-2012, 11:11 AM
RE: Mystery Control receiver - by Keith - 06-06-2012, 12:19 AM
RE: Mystery Control receiver - by codefox1 - 06-06-2012, 01:03 AM
RE: Mystery Control receiver - by w4rtc - 06-06-2012, 09:32 AM
RE: Mystery Control receiver - by w4rtc - 06-06-2012, 09:35 AM
RE: Mystery Control receiver - by Ron Ramirez - 06-06-2012, 10:58 AM
RE: Mystery Control receiver - by Ron Ramirez - 06-06-2012, 03:00 PM
RE: Mystery Control receiver - by Keith - 06-08-2012, 01:56 PM
RE: Mystery Control receiver - by Chuck Schwark - 06-08-2012, 03:14 PM
RE: Mystery Control receiver - by Keith - 06-08-2012, 04:58 PM
RE: Mystery Control receiver - by Keith - 06-09-2012, 01:49 AM
RE: Mystery Control receiver - by codefox1 - 06-09-2012, 01:53 AM
RE: Mystery Control receiver - by Ron Ramirez - 06-09-2012, 07:26 AM
RE: Mystery Control receiver - by Keith - 06-09-2012, 03:48 PM
RE: Mystery Control receiver - by Keith - 06-22-2012, 01:18 AM
RE: Mystery Control receiver - by Keith - 06-26-2012, 12:22 AM
RE: Mystery Control receiver - by Chuck Schwark - 06-26-2012, 10:51 AM
RE: Mystery Control receiver - by Keith - 06-26-2012, 01:47 PM
RE: Mystery Control receiver - by w4rtc - 06-26-2012, 07:10 PM
RE: Mystery Control receiver - by 7estatdef - 06-26-2012, 10:14 PM
RE: Mystery Control receiver - by Keith - 06-26-2012, 11:59 PM
RE: Mystery Control receiver - by 7estatdef - 06-27-2012, 06:38 AM
RE: Mystery Control receiver - by Keith - 01-16-2013, 08:53 PM
RE: Mystery Control receiver - by Chuck Schwark - 01-16-2013, 11:31 PM
RE: Mystery Control receiver - by Keith - 01-18-2013, 04:39 PM
RE: Mystery Control receiver - by Keith - 01-27-2013, 08:30 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
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

[-]
Who's Online
There are currently 1949 online users. [Complete List]
» 1 Member(s) | 1948 Guest(s)
Avatar

>