[NJARC] Atwater Kent question

Al Klase al at ar88.net
Wed Jan 24 22:40:12 EST 2007


Hi Joe,

There are only about 3 caps in the set, and they are pretty 
non-critical.  I'd leave them unless there is a problem.  I can't prove 
it, but it almost seems like there was a change for the worse in the 
paper industry in the late twenties.  A lot of the early paper caps seem OK.

The first thing I'd do is ohm the audio transformers.  They tend to be 
the big problem.  If you have open windings, there are work-arounds if 
you can't find a replacement.

Watch for open resistors in the grid circuits of the RF amps.  I had 
this problem years ago with the Model 20 that's currently in the museum.

Power supply might be a challenge.  What do you have in mind?

I'm listening to a Grebe Synchrophase as I type waiting for Chicago to ID.

Regards,
Al

TrainBee at aol.com wrote:
> Visit our web site - See http://www.njarc.org
> _______________________________________________
> I am starting to work on a Model 30 Atwater Kent radio.  This is a  first 
> attempt with a pre-superhet radio.  When it comes to replacing the  capacitors, 
> what is the suggest method to use?  Hide the new parts  underneath?  Gut the 
> old parts and insert the new parts?  
>     What typical problems might run into when working  on this type of radio? 
>  I have schematics and other paper to help.
>     Suggestions and guidance greatfully  appreciated.  
>  
>   
Al Klase - N3FRQ
Flemington, NJ
http://www.skywaves.ar88.net/




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