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

Dielectric insulators
#10

(10-14-2015, 12:25 PM)Radioroslyn Wrote:  
(10-14-2015, 11:02 AM)Jay Thomas Wrote:  
(10-14-2015, 10:31 AM)Radioroslyn Wrote:  Seems like your coil is ok but pot is bad. If you connect your antenna to the wiper of the pot do you receive signals ok? If so your pot is open. Suitable replacement would be one from 10K-50K.

Terry

Thanks again.  I will give it a try.  I am able to control the volume okay.  My body is acting like an antenna when I hold on to the volume control knob.  Like I mentioned before, the volume increases when I am holding the volume control knob, and decreases when I let go.  But I can raise and lower the volume okay otherwise. 

Any thoughts or ideas about what I can use for insulation material to replace the dielectric material in the sensitivity control?  It probably is the same material used in all of the old tuners for adjustments.  Looks like an early thin plastic material.

Here is another question maybe you can help with...I use a transmitter to listen to music on all of my AM radios.  The music comes in very clear.  I have 3 Philco cathedrals, a model 20, 80 JR and 81 JR.  Sound is distorted on all 3 from the transmitter, but clear on normal radio transmissions.  Is this normal on these older radios?  I have an AMT3000.  Maybe too powerful for the older radios? 

Thanks for any comments.

Jay
Sent pm.

Terry

Hi Terry:  You were right!  The pot was bad.  It tested good with an ohm meter.  I happened to have another Philco pot and replaced it and no longer have the problem where I act as an antenna. Never would have suspected this. Icon_biggrin

Thanks for your help.


Messages In This Thread
Dielectric insulators - by Jay Thomas - 10-13-2015, 07:44 PM
RE: Dielectric insulators - by Radioroslyn - 10-14-2015, 08:53 AM
RE: Dielectric insulators - by Jay Thomas - 10-14-2015, 10:01 AM
RE: Dielectric insulators - by Radioroslyn - 10-14-2015, 10:31 AM
RE: Dielectric insulators - by Jay Thomas - 10-14-2015, 11:02 AM
RE: Dielectric insulators - by Radioroslyn - 10-14-2015, 12:25 PM
RE: Dielectric insulators - by Jay Thomas - 10-16-2015, 10:22 AM
RE: Dielectric insulators - by Jay Thomas - 10-14-2015, 03:12 PM
RE: Dielectric insulators - by Radioroslyn - 10-16-2015, 07:56 PM



Users browsing this thread: 6 Guest(s)
[-]
Recent Posts
6TPZ and 5TPO Radio Help
OK, so 18 and 19 as they should be. What is "everything else?" Try to be more specific in your descriptions:...morzh — 12:44 PM
6TPZ and 5TPO Radio Help
Yeah, I'm still on 5TPO. Sorry, my bad, points 1 and 2 should be points 18 and 19 (easy mistake  :think: )  X7 is shown ...R3Sons — 11:42 AM
Philco 40-120C Filament Wiring
Hi folks, I'm in the process of restoring a Philco 40-120C and I'm finding the wiring to be a bit puzzling. According to...bluecap — 11:28 AM
462ron
Hi Levi, here’s just a thought. Most radios run the oscillator higher than the dial setting. Say you set your radio to 1...462ron — 10:10 AM
1930s Stewart-Warner Tombstone Radio need help identifying model number
Another Update: I found a couple of damaged coils inside this radio that might have something to do with why this radio ...captainclock1988 — 10:51 PM
6TPZ and 5TPO Radio Help
If you are still on 5TPO, you lost me there. What X7? What Points 1 and 2?morzh — 08:37 PM
6TPZ and 5TPO Radio Help
Quick progress report: X7 is broken. Only one leg soldered, the other missing and the diode is cracked. I've replaced...R3Sons — 05:05 PM
6TPZ and 5TPO Radio Help
Oh...and you have electrolytic caps there. All need to go and be replaced.morzh — 04:36 PM
6TPZ and 5TPO Radio Help
Thanks, will do.R3Sons — 01:25 PM
1930s Stewart-Warner Tombstone Radio need help identifying model number
UPDATE: I was able to pick up a signal generator on the cheap (amazingly enough) on feebay and I did an IF alignment fol...captainclock1988 — 09:53 AM

[-]
Who's Online
There are currently 7142 online users. [Complete List]
» 1 Member(s) | 7141 Guest(s)
Avatar

>