[Hallicrafters] Re: Hallicrafters Digest, Vol 36, Issue 17

Joe Bob Brunson yowje at yahoo.com
Sat Jan 20 01:21:50 EST 2007


Re Line Voltage...

I've run a couple of them through a variac, and, if
anything, it seems that the hum increases as the
voltage decreases...


> Date: Sun, 14 Jan 2007 23:33:58 -0500
> From: kd4e <kd4e at verizon.net>
> Subject: Re: [Hallicrafters] Hummmmmm.......
> To: hallicrafters at mailman.qth.net
> Message-ID: <45AB0436.8070004 at verizon.net>
> Content-Type: text/plain; charset=ISO-8859-1;
> format=flowed
> 
> The fact that it is happening in *all* of those
> radios demands a look at the cause in addition
> to the specific failure.
> 
> Have you checked your line voltage?  I wonder if
> it is running high. Those rigs were designed when
> the line voltage tended to be lower -- if your local
> line voltage is high (or contains frequent spikes)
> it could be that the voltage stress may have harmed
> the same weak point in all of them.
> 
> Just speculating ... everyone on this list is
> more knowledgeable than am I!  :-)
> 
>


 
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