[Hallicrafters] S-38B Hum

[JFran10657 at aol.com]

In a message dated 12/18/03 9:08:13 PM Eastern Standard Time, 
k7mks at comcast.net writes:

> Subj: [Hallicrafters] S-38B Hum 
>  Date: 12/18/03 9:08:13 PM Eastern Standard Time
>  From: k7mks at comcast.net
>  To: hallicrafters at mailman.qth.net
>  Sent from the Internet 
> 
> 
> 
> Just finished replacing the 4 filter caps in a S-38B. Set works fine but 
> when I adjust the AFG knob it brings up a hum level. Remove my hand and the hum 
> goes away.  Currently powering the radio through an isolation transformer.  
> Has anyoine experienced this "hum"  or is it a characteristic of the radio.  
> Thanks.  Joe k7mks
> 
> 
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Hi Joe
I had the same problem on my 38b. I reversed the power plug polarity and it 
cured the hum.
Hope this helps.


seaons greetings
Jim  ka2zuu


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