I've heard that they can be replaced by ones with a close part number 
(which is currently available)  along with some bias adjustments. 
 
Dave 
 
On Dec 26, 2004, at 11:20 AM, mike bryce wrote: 
 
the only down side of the argosy 1 and II is the final transistor are 
made 
out of unobtainium.. not even rf parts has them in stock anymore. 
 
so, if they go, you will truly have a qrp only radio.. 
 
Mike Bryce WB8VGE
SunLight Energy Systems  
http://www.seslogic.com
http://www.theheathkitshop.com  
"Electricity at the speed of light" 
 
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