[Amps] Alpha 78

[Carl]

Neither transformer is light.

If its black and squat and looks like its coated in tar and then painted 
over its a Hypersil. If the top laminations are showing and probably rusty 
then its an EI.

This is a Hypersil in a rather grungy 78
http://www.qsl.net/hs0zed/Alpha78/Picture%20002.jpg

Carl
KM1H


----- Original Message ----- 
From: "Carol Richards" <n2mm at comcast.net>
To: <Amps at contesting.com>
Sent: Sunday, August 26, 2012 1:31 PM
Subject: [Amps] Alpha 78


> Thanks to everyone who responded to my question. When the 78 was converted 
> over to 3CX800A's, the caps were replaced. Judging from the weight of the 
> transformer it is  an EI version. The consensus seems to be to run it at 
> reduced power and put a muffin fan  to add air cooling.  I made the 
> decision to run it abot 700 watts  (50% of normal output).  RTTY is a 
> whole new ball game for me. After 52+ years of only CW and SSB, I must 
> learn how to type...  Next summer's project.
>
>
> Carol
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