[Hallicrafters] The hot SX28 6V6s

[Asif Khan'Nick']

The fact that the tubes run real hot could be also be due to leaky caps ! Also a solid state rectifier in the power supply could also boost the voltages in the power supply. Are you also using the correct impedance speaker?
Nick
-----Original Message-----
From: Guido <laffitte at prtc.net>
To: hallicrafters <hallicrafters at mailman.qth.net>
Sent: Mon, Oct 31, 2011 6:55 pm
Subject: [Hallicrafters] The hot SX28 6V6s


The heat problem in the 6V6s of my SX28 was basically solved by lowering the AC 
oltage to 110. Household voltage here sometimes soars to 125VAC. Lowering the 
oltage with a Variac reduced the heat to what one could consider warm and  
ormal. It was hot to the point where one could not touch the lid just above the 
ubes.  The tubes still have some bluish glow left though. This tells a lot 
bout the importance of operating these older rigs at the voltage for which they 
ere designed. Anyone remembers when the voltages came up?
73s
Guido KP4FAR
_____________________________________________________________
allicrafters mailing list
ome: http://mailman.qth.net/mailman/listinfo/hallicrafters
elp: http://mailman.qth.net/mmfaq.htm
ost: mailto:Hallicrafters at mailman.qth.net
List Administrator: Duane Fischer, W8DBF
* For Assistance: dfischer at usol.com ** 

his list hosted by: http://www.qsl.net
lease help support this email list: http://www.qsl.net/donate.html