[Hallicrafters] The hot SX28 6V6s

[WA1KBQ at aol.com]

I don't run anything here without a variac. Stuff is on all day long and  
nice to find transformer is not much more than warm at the end of the day. If 
I  have not checked to see what setting produces correct filament voltage 
in a  particular unit I just go with 110 until I get around to it.
 
Regards, Greg
 
 
In a message dated 10/31/2011 9:55:08 P.M. Eastern Daylight Time,  
laffitte at prtc.net writes:

The heat  problem in the 6V6s of my SX28 was basically solved by lowering 
the AC voltage  to 110. Household voltage here sometimes soars to 125VAC. 
Lowering the voltage  with a Variac reduced the heat to what one could consider 
warm and   normal. It was hot to the point where one could not touch the 
lid just above  the tubes.  The tubes still have some bluish glow left though. 
This tells  a lot about the importance of operating these older rigs at the 
voltage for  which they were designed. Anyone remembers when the voltages 
came  up?

73s

Guido  KP4FAR
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