----- Original Message -----
From: Bob Maser
To: Dave Weiss ; amps@contesting.com
Sent: Saturday, June 07, 2008 12:54 PM
Subject: Re: [Amps] AL-1200 Ameritron help request...
Probably just a loose license plate left in there by one of the convicts Hi.
What??
Why not take the cover off and leave the B+ off and poke around to see what
is causing the buzz. I don't need to tell you to use a non-conducting wand
to do the exploration. I cannot understand why it would be the relay as it
shouldn't be energized in the standby mode. Could be the blower.
Bob W6TR
----- Original Message -----
From: "Dave Weiss" <davidhweiss@gmail.com>
To: <amps@contesting.com>
Sent: Saturday, June 07, 2008 3:23 PM
Subject: [Amps] AL-1200 Ameritron help request...
> Hello:
>
> I have a new AL-1200 and it performs just fine on all bands. It has an
> issue that I did not expect:
>
> When I first turn it on, it is normally quiet, the blower on factory
> setting
> (medium) is NOT noisy. The plate voltage is 3500-3600 depending on house
> AC
> usage. After a minute or so, a loud buzzing sound is heard. Ameritron
> guided me to a relay mounted by a 1/4 inch stud and nut on the rear of the
> unit. The nut was loose and tightening it seemed to correct the issue for
> a
> few minutes. Pressure applied to the rear of the unit changes the pitch
> of
> the buzz. Everything else on the rear panel is secured properly.
>
> Has anyone experienced this problem? Need some good help.
>
> Best 73
>
> Dave K3FT
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