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National NC-125
#16

Nice restoration, Mike. That BAMA schematic would have me reaching for a bourbon bottle in no time at all! Take care, and BE HEALTHY! Gary

"Don't pity the dead, pity the living, above all, those living without love."
Professor Albus Dumbledore
Gary - Westland Michigan
#17

The comment about putting arrows prompted me to do some experimenting using MS Paint. While I may not be able to do arrows, I have figured out how to do ovals, so, in the future I will edit the photos with circles around items of interest. With more practice, who knows, I may even figure out how to do arrows.
#18

I just made a follow up to my video on the restoration of my National NC-125. This one is a live action demonstration of the receiver. Here is a link to the video:  https://www.youtube.com/watch?v=0J3fWjdvwqI&t=19s
#19

Nice Job, nothing like seeing it in action.

Paul

Tubetalk1
#20

I know that the last comment in the was several months ago, but Nice job Mike!! I have an old National from the (early?) 30 buried in my garage (archeological site). Do not know the model, has plug in coils, a log scale, and is missing the external power supply. I don't believe that it is a Thrill Box. I found it in the Town of Huntington Landfill as a kid. Amazing quality on yours, considering that National started out as a toy company.

On the retirement bucket list, along with Grandma's DuMont RA113, an RCA 721 (not a Vassos), Mom In Law's RCA CTC24 (last of the Roundies) and a 64 Lincoln Continental 4 Door Convertible (among other things).

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55
#21

Thanks for the kind words, MrFixr55. That National has turned out to be a GREAT receiver. It takes some practice and trial and error to be able to tune in SSB voice using the CWO, but it can be done. I primarily use it for shortwave listening. The "Select-o-jet" circuitry does help with selectivity almost as well as a crystal filter, surprisingly; again, once you get used to using it. I was more used to using crystal filters from my Hammarlunds and the Q multiplier on my Lafayette. If I have my 'druthers" I'll take the crystal filter. Yes, as far as quality, back in the 1950s National was right up there in the second tier after Hammarlund, and, IMHO, a little better than Hallicrafters. You certainly have a nice collection of projects to keep you amused. Keep us informed of how you progress with them.
#22

I have re capped my NC125.  Does the Signal Strength Meter NOT work when switched to CWO?  That is what I am seeing as I work on my unit.  Thanks.
#23

I suspect that it doesn't. Older sets w/o a product detector the bfo would cause the S meter to read the signal level of bfo rather than the level of the incoming signal.
Some sets when the bfo is turned on the S meter is turned off.

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
#24

I have recapped my NC 125.  I had poor reception until I replaced the speaker wires.
This worked until today.
Suddenly I lost all reception.
The radio has solid tones with a signal generator on all four bands.
Ideas?
I had been working with my old headphones (they are toast).



Attached Files Image(s)
   
#25

Hello Mtmattking,
Have you checked the tubes and far as being re-capped did you do both the coupling and electrolytic capacitors also did you check the resistor values .

Sincerely Richard
#26

I recapped (using a kit) and tested/replaced the tubes.
I will check the resistors.
The sudden loss of reception is what puzzles me.
#27

Hello Mtmattking,
yes, something changed like a component changed in value do you have any spare known tubes you might change out and also do you have the schematic and good meter to test for voltages ?

Sincerely Richard
#28

A suggestion:

- The thread has long been dead.
- The owner of the thread's status is "banned".
- There's more than one NC-125 in the world, same as Philco 90 or Zenith 1000Z.

Every radio deserves its own thread. Reviving old threads, while not exactly against the rules, but...why? If there is a serious discussion of what is done to this radio, the new thread would be needed anyway.

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.
#29

I agree with Mike. A new set of circumstances is best served by presenting them in a new thread. Feel free to reference an old thread for comments and such, but starting a new thread to address your particular issues is recommended. Take care and BE HEALTHY! Gary

"Don't pity the dead, pity the living, above all, those living without love."
Professor Albus Dumbledore
Gary - Westland Michigan
#30

Hello morzh and gary,
You are correct anyway hopefully Mtmattking reads this.
Thanks gentleman .

Sincerely Richard




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