Hi, Craig--
The finals in the Triton and black Omni radios can go into oscillation if
the ALC sensing circuit is not working properly. This failure of the ALC
sometimes comes from electrostatic discharge in the vicinity. I assume
without knowing that the same oscillation would occur in the Argosy if the
ALC is in trouble.
Assuming you first noticed the problem last night, when did you last use the
rig on those higher bands? If my rig went south on 20-10 meters, I'd not
notice it for months or years.
A warning: the finals in the Argosy are like hen's teeth. I suggest you
NOT increase the trip threshold in the supply unless you are darned sure
that the supply is the trouble. Even then, I'd want to know its trouble.
73, Mike N4NT
----- Original Message -----
From: "Craig Roberts" <crgrbrts@verizon.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Thursday, December 07, 2006 1:42 AM
Subject: [TenTec] Circuit breaker tripping excessively
My Argosy II / Model 225 power supply combo began acting oddly tonight.
On 20 meters and above, the power supply's circuit breaker is tripping
when the rig is keyed -- even when working into a dummy load. Antenna
connections are fine. This behavior began tonight -- I've never had it
before and nothing been changed i the station setup..
So, it appears that either the current sensing circuit has gone bad or
the rig really is drawing excess current on the higher bands. I'm
baffled. I reset the tripping point in the power supply, but that's not
the way to fix this.
Any ideas?
Many thanks and 73,
Craig
W3CRR
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