[Amps] Update on AL-1200 T/R Problem
km1h at jeremy.mv.com
Thu Feb 6 11:48:27 EST 2014
Id suggest calling Ameritron Service Dept. They would know the latest
----- Original Message -----
From: "Ken Asmus" <ken.asmus at gmail.com>
To: <Amps at contesting.com>
Sent: Thursday, February 06, 2014 11:41 AM
Subject: [Amps] Update on AL-1200 T/R Problem
> Thanks to all the replies with suggestions on how to clean the T/R relay.
> I finally decided to pop the cover and take a stab at solving the issue (I
> have been chasing FT5ZM a lot!).
> I was a little perplexed to not be able to find an open frame relay for
> (there are 2 other relays associated with the soft start etc. on the power
> supply side). I downloaded a schematic and found the following notation
> next to RLY1 :
> THIS RELAY IS AS SHOWN ON THE FACTORY SCHEMATIC.IT HAS BEEN REPLACED BY A
> NEWER RELAY BOARD. IT IS FUNCTIONALLY EQUIVALENT.
> My AMP is a 2006 version and sure enough there is a relay board attached
> the divider plate near the ant in/out jacks.
> So my next question - is there anything I can do to fix the T/R issue on
> this board? Or do I need to replace the entire board?
> Thanks again,
> Ken VA3KA
> -----Original Message-----
> From: Ken Asmus <ken.asmus at gmail.com>
> To: amps <amps at contesting.com>
> Sent: Fri, Jan 31, 2014 8:38 am
> Subject: [Amps] AL-1200 T/R problem
> My AL-1200 has developed a T/R switching issue. In about 5 out of 10
> transmissions the receive does not fully come back after releasing the
> A click of the mike button or a dot on the paddle brings the receive back.
> Any suggestions where to start looking to clear this problem?
> Thanks and 73,
> Ken VA3KA
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> Amps at contesting.com
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