[Hallicrafters] SX25 mods

[peter_may at optusnet.com.au]

I think the 80 and the 5Y3 are the same electrically.
>From memory the main difference was the 80 had a 4 pin base and the 5Y3 had an 
octal. It was probably quite a practical upgrade.

Regards
Peter May



> chandlerh2 at aol.com wrote:
> 
> hello to all this is my 1st post here and i am somewhat of a novice 
> working 
> on these radios  but i do know enough to work on them . i love 
> hallicrafters 
> and have about 8 of them now all in working order including a mint SX24 
> and 
> SX25. i have completely recapped my SX25 and one shematic i have shows 
> to use a 
> 6AB7 in the 1st RF stage and also a 5Y3 rectifier tube instead of an 80 
> . are 
> any mods necessary to use the 6AB7  and would i see any preformance 
> gains ???  
> any info would be appreciated  
> thanks  steve 
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