[Amps] Alternative cooling strategies for SB-220?

[RK]

Ron Youvan wrote:
>> ... can you narrow it down a bit beyond 'the fifties'? I have most QSTs from that era 
>>     
>  > but if you or anyone can narrow it below 120 issues ...
>
>    If all else fails look in the back of the December issues, at the annual index then you have only 
> 10 issues to search.
>   
!2 seconds on the ARRL site and QST archives with the word "steam" finds 
May 1966, "Stanley Steamer" by Quinn, W6MJG.
Uses a grid driven 4CV1500B (4CX1500B).

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