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

Truetone D 2616
#1

    Good Morning 
I have a Truetone D2616 actually I have two of them, one looks pristine the other I'm trying to restore. My question concerns T2 a 90 ohm coil. In the one it is missing and in it's place is a 1meg resistor Why would someone do that? I can wind one but is it necessary for it to look like the picture with 4 coils or can I make 1? I have hopefully posted the picture correctly?
#2

Eric,

It would help more if you gave the link to the sch.

http://www.nostalgiaair.org/Resources/760/M0023760.htm


Looks like a part of AVC circuit.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#3

Morzh
My apologies I went to Nostalgia and found the print copied it then got caught up trying to attach the picture and forgot to paste the link. The one in the picture reads 85 ohms I'm making a form now just wondering why the 4 segments? Any electrical reason to do this?
Eric
#4

Hi Eric
What you have a RF choke not so much a tuned inductor. As Mike sez it's in the avc circuit. It's used to couple the small amount of voltage from the ant though the input tuning down to the avc buss Most sets would have a high value resistor there. Is it open?? If not I would mess with it.
Terry
#5

(03-30-2015, 11:48 AM)Radioroslyn Wrote:  Hi Eric
What you have a RF choke not so much a tuned inductor. As Mike sez it's in the avc circuit. It's used to couple the small amount of voltage from the ant though the input tuning down to the avc buss Most sets would have a high value resistor there. Is it open?? If not I would mess with it.
Terry

Terry
 In the one radio it is Missing. They have in its place a 1 meg resistor. So unless you tell me different I'll leave the resistor in place.
Eric
#6

Should be fine either way.
Terry
#7

I also think it should be fine.
They could've tried to defeat some signal that today might not even be there.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 46-480 Electronic Restoration
The sleeving for the transformer arrived early, so I went ahead and finished reassembling. The chassis looks far better ...jrblasde — 10:15 PM
Philco 610B oscillator wiring
I don't know what you are referring to when you say "tube cathode ground". Ground is a connection to the chass...RodB — 05:56 PM
Zenith H725
Good points, Arran. I haven't encountered this problem with any other radio (all earlier vintages), so am learning here....EdHolland — 05:32 PM
Zenith H725
Ed; One thing that I will say about these is that Brand Z was considerate enough to make these mica caps easily acces...Arran — 02:34 PM
Philco 610B oscillator wiring
Do you know what run # your chassis is? It took me a while to find what you were basing updates/modification on as I did...Radioroslyn — 07:34 AM
Need to purchase some accessories for restoration of my Old Philco Radio
COLLEAGUES, Thank you all for such good and important suggestions as how to find good replacement parts. I will go fo...palonso — 07:05 AM
Zenith H725
Here's what the inside of AM IFT2 looked like, and the other pic shows the discs I made to take place of the mica and ke...EdHolland — 07:40 PM
Zenith H725
IF2 will need replacement caps. The arcing was severe enough that the mica is pitted and holed where the HT flashed over...EdHolland — 04:04 PM
My Philco 37-116 Restore
Measuring from center tap like the tube voltages show. Cap 127 is isolated from ground. Cap 127 shown in upper left of p...dconant — 08:05 AM
My Philco 37-116 Restore
Are you measuring relative to the centertap or the GND?morzh — 11:57 PM

[-]
Who's Online
There are currently 716 online users. [Complete List]
» 1 Member(s) | 715 Guest(s)
Avatar

>