[Heathkit] Re-tubing an SB220

Ernie Piche N1SW n1sw at cox.net
Tue Sep 11 06:40:50 EDT 2007


Ernie Piche N1SW wrote:
> Well I have now finished my 220 upgrade.  I installed the external 
> transformer and all the internal parasitic stuff along with other 
> modifications.  It is working fine but still not getting full output 
> so I guess it is time to replace the 3-500 tubes.  I am looking for 
> recommendations on who's tubes to buy and what experience does anyone 
> have with mail order tubes.
>
> Thanks
> Ernie
> N1SW
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Thanks all for the information it is greatly appreciated.
73
Ernie



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