[TenTec] Source or Substitute for Argonaut 509 Final TransistorsPT3647?

[Mike Hyder -N4NT-]

Two suspiciously similar devices may appear on this Mouser page:
http://tinyurl.com/2fhznf

73, Mike N4NT

----- Original Message ----- 
From: "Frank Castelluccio" <wb2lrr at yahoo.com>
To: <tentec at contesting.com>
Sent: Sunday, July 15, 2007 3:38 PM
Subject: [TenTec] Source or Substitute for Argonaut 509 Final
TransistorsPT3647?


> Hello to the list,
>
>  Does anyone happen to know of a source for the PT3647 final transistor
> used in the Argonaut 509? Perhaps even a readily available substitute for
> those transistors?
>
>  I can find them all over the web but unfortunately those huge obsolete
> device clearing houses who bought up all the surplus wont sell me 2 of
> them. Very frustrating indeed when they all want a minimum of $150-200
> dollars per order.
>
>  I have 2 509's here and one needs some work including replacing blown
> finals, my intent is to fix it up for my nephew who has a budding interest
> in Amateur radio.
>
>  Any suggestions or direction on this would be greatly appreciated.
>
>  Frank
>