[NJARC] a few problems

[Aaron Hunter]

Ed

The circuit for the AK 45 appears to be the same as the 44.  To use a 
modern speaker, you would need an output transformer.  A lot of the 
radios in the 50s and 60s had the transformer mounted on the speaker 
frame.  Why not use an original style speaker from the period?  There 
are a lot of them around and since the speaker has it's own cabinet, it 
would go nicely with the radio.  If you just want to hear it play, just 
grab a tube radio, clip a couple of wires on the input leads of the 
audio output transformer and connect to the speaker posts of the 45 and 
it should work.  Just don't have the volunteered radio powered up at the 
time.

Good luck on the Glorytone.  You'll either a) find a sacrificial radio 
for parts, b) replace with a modern speaker and use resistors and 
capacitors to replace the field coil, c) have someone rewind the field 
coil, or d) get lucky searching out that wiring break.

Is the cap in the IF xformer the adjusting type?  If so, I've had luck 
in removing and disassembling the transformer to get at the capacitors.  
Then remove the screw, lift the plate and mica and clean.  The silver 
likes to migrate.  If that is not the style, then remove it by 
destroying it and replace with a modern capacitor.  It might have to be 
mounted on the outside at the terminal lugs.  I don't know the value, 
maybe 200 picofarads.  Some of our knowledgeable people out there have 
done it and probably remember the value.

edotte at optonline.net wrote:

>Visit our web site - See http://www.njarc.org
>_______________________________________________
>Hi all,
>
>
>
> It has been a while and I have been enjoying the summer but
>I have a few dangling problems and maybe someone has some advise or possible
>parts for sale.
>
>
>
> The Atwater Kent 45 I have needs a speaker. I was wondering
>how I could figure out what kind of replacement I could make of a modern
>speaker. The thing is I have no idea what the field coil resistance is so I
>could match one. I did check out that very good web site on Atwater
>Kent’s
>but the ONLY model NOT listed is the 45! What to do? Any ideas?
>
>
>
> The Gloritone 26 I have needs a field coil. It is center
>tapped with resistance of 2460 and 9040 Ohms. The part number is 2555 Radio
>Corp number. The coil itself has a fair open but somewhat intermittent
>operation. I am to the point where I figure open it up and see what is
>happening as I haven’t much to lose. I have no way of cross referencing it.
>Maybe someone has a part or an equivalent I could buy.
>
>
>
> I also have a Philco 48-200. The 1st IF transformer
>is not working. It appears to have good DC resistance but it probably has a
>defective internal cap. The part number is 32-3967. I did check
>oldradioparts.com but no deal. I am looking for this part also.
>
>
>
> So this is my problems and if anyone has an idea or a part I
>would welcome it. Thanks again.Edward 
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