[NJARC] Atwater Kent question

[TrainBee at aol.com]

Hello Al,
    You were right, the wires were hopelessly  faded.  Using the schematic, I 
replaced each with the same color up to  using a solid Green in place of a 
Green with a yellow trace.  The matter of  the Green with Yellow trace comes 
from the hook-up tag that came with the  radio.  (original tag from Atwater Kent, 
June 1926)
    So here is the bottom line, I just wanted to verify  that the voltages.  
The Nostaglia Air  (Riders schematic ?) shows no  voltages, Beitman's shows 
only 2 voltages and the schematic I found from the  W3NLB Atwater Kent site 
gives a 90v B+ voltage, 22½ v and 67½ v (I am guessing  B+ voltage), -4½ v C, and 
-6v A voltage.  
    Al, I just want to make sure that I put the right  voltage into this 
radio and don't fry 6 good 01A's.  All of the coils are  good along with the 
transformers.  I only had to replace two caps, the grid  leak resistor and one 
other resistor.  Everything else checked out  OK.  In the end, if a part looked OK 
and passed the test, it was  not touched.
    If you would like me to bring it on Friday night,  let me know.  I can 
bring the power supply and speaker to try it out.
 
Regards and thanks,
Joe
 
 
In a message dated 2/5/2007 9:36:21 PM Eastern Standard Time, al at ar88.net  
writes:

Visit  our web site - See  http://www.njarc.org
_______________________________________________
Hi  Joe,

The metal weight will normally go on the detector tube to damp out  
microphonics.

I'm not sure I understand the rest of the question.  Can you tell which 
wire is which color? They're often hopelessly  faded.

Standing by,
Al

TrainBee at aol.com wrote:
> Visit  our web site - See http://www.njarc.org
>  _______________________________________________
> I have the AK Model 30  back together and ready to go.  Can someone  verify 
> the  voltages I should be using and on which tube the metal cap goes   on.  
>  
>     The schematic I am using  calls for the following  voltages:
>  
> A+     0        Red     (  A+ and B -  )
> A  -    -6v      Black  
>  B+    90v     Brown
> B  -     0        Red
> B+   67½v    White  
> B+   22½v   Yellow  
> C  -    4½v    Green or Blue  depending  schematic
>  
>          
>     Current information  sources:     W3NLB schematic, Nostaglia Air, and  
> Beitmans.
> I have a  battery eliminator that can supply adjustable A voltage,  fixed 
+22,  
> 45, 67, 90, 135 and adjustable C voltage.
>  
>  Thanks again in advance for your help.
> Joe Devonshire
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> NJARC at mailman.qth.net
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>
>
>    

-- 
Al Klase – N3FRQ
Flemington,  NJ
http://www.skywaves.ar88.net/

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