[TenTec] Circuit breaker tripping excessively

[Mike Hyder -N4NT-]

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 at verizon.net>
To: "Discussion of Ten-Tec Equipment" <tentec at 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