[NJARC] Very unusual Transistor radio :-) 1930's

[Joe Cro]

Hello Bill,       
             I know you knew your "stuff"! The shape of those 1N01A's give it away, don't they? Or could it be those shouldered raised bakelite four prong transistor sockets it uses? The fourth prong on the socket was used for a "trap" or cleanout for the transistors' drain, wasn't it? They used funny things way back in the 1970's for electronics, didn't they?

The "trap" or cleanout for the drain was used to rid the sockets of electron molecules gathered there during electron bombardment. They prevent the transistor from doing it job, kind of like a lo mu NPN or PNP. 

I'm forever in awe of your expert electronic knowledge and still want to be like you when I grow up!

Mod-U-later,
                 Joe Cro N3IBX


  ----- Original Message ----- 
  From: William Overbeck 
  To: n3ibx at verizon.net ; ark at ar88.net ; njarc at mailman.qth.net 
  Sent: Friday, March 13, 2015 3:28 PM
  Subject: Re: [NJARC] Very unusual Transistor radio :-) 1930's


  Hi Joe.

  Yes I would like to date something made between 1968 to 1975.

  Bill Overbeck



    Regarding dating the thing, would you say it was made sometime between say 1968-1975? Maybe a little older......... 
     
    Regards, 
                Joe Cro N3IBX






  -----Original Message-----
  From: Joe Cro <n3ibx at verizon.net>
  To: Al Klase <ark at ar88.net>; njarc <njarc at mailman.qth.net>
  Sent: Fri, Mar 13, 2015 12:01 pm
  Subject: Re: [NJARC] Very unusual Transistor radio :-) 1930's


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Hello Al, 
              Yes, this guy did some real research. Those are Thermionic glass transistors that are not of the cold cathode variety. I would guess the 9V transistor radio battery would have fit somewhere in the compartment. It looks like all the transistors could be 1N01A's! 
   
  It looks like the loop antenna is missing which would be a good barganing point if one wanted to buy this thing from the seller. 
   
  Regarding dating the thing, would you say it was made sometime between say 1968-1975? Maybe a little older......... 
   
  Regards, 
              Joe Cro N3IBX 
   
   
   
   
   
    ----- Original Message ----- 
    From: Al Klase 
    To: njarc at mailman.qth.net 
    Sent: Friday, March 13, 2015 11:09 AM 
    Subject: Re: [NJARC] Very unusual Transistor radio :-) 1930's 


    Just remember 
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    Yes, those are glass transistors.  They have pilot lights inside so you can tell that they are working properly. 

     

Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

On 3/13/2015 10:49 AM, Bill wrote: 

      Just remember 
      Reply = Poster 
      Reply All = Everyone 

      _________________________________________________________ 
      I see seven transistors, must have an RF stage. 

      On 3/13/2015 10:36, oldradio at comcast.net wrote: 

        Just remember 
        Reply = Poster 
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            Acme Cleveland Ohio transistor radio model AC-7 

            https://southjersey.craigslist.org/atq/4929839552.html 

        73, John Dilks, K2TQN 
        Having fun smelling hot rosin and solder again. 
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