I had an experience that occurred on a model 544 (the Triton with a digital
display) and the matching power supply. A series pass regulator transistor
shorted thru putting over 24 volts into the transceiver. I noticed the
extremely bright display, and like an idiot for some reason I keyed the unit
allowing the overvoltage to be applied to the xmtr circuits. I had bought
the unit new and had it just a week or two over one year which was the
warranty period. I went ahead and contacted Ten Tec after repairing the
power supply. They instructed me to send the 544 to them which I did. I
got it back repaired plus some other hardware modifications that had took
place since I had got the unit. No charge. An Airpax would of prevented
the problem. I believe later powersupplies were improved with a crow-bar
overvoltage protection circuit. I have never used the Airpax, I still have
an Omni VI (Opt 3) and matching power supply.
Take care, 73, Jim de wd4air
>From: K5XS@aol.com
>Reply-To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
>To: tentec@contesting.com
>Subject: Re: [TenTec] Airpax Polarity?
>Date: Thu, 5 Apr 2007 18:20:56 EDT
>
>
>
>Hey Jim,
>
>That's what I intend to do, but was wondering if someone could shed some
>light. I have been on-line reading application notes. No revelations so
>far...
>
>73,
>Bernie
>
>In a message dated 4/5/2007 5:18:34 P.M. Central Daylight Time,
>dufferjames@hotmail.com writes:
>
>Hey Bernie,
>
>While it seems like there would be no polarity issues, why not just
>connect
>the line side to line and the other side to load to prevent any doudt.
>
>Jim, wd4air
>
>
> >From: <K5XS@aol.com>
> >To: <tentec@contesting.com>
> >Sent: Thursday, April 05, 2007 5:38 PM
> >Subject: [TenTec] Airpax Polarity?
> >
> >
> > > At the minimal cost, I decided to add an Airpax T11-1-20.0A-01-11C-V
>in
> >my
> > > power supply circuit for my Orion II.
> > >
> > > I got the breaker (I got three, if anyone wants one at what I paid,
>let
> >me
> > > know) today, and looking at it, I see what appears to be an arrow
> >indicating
> > > "In" and another indicating "Out." I note also that the lug with a
>#1
> >is
> > > labeled "LINE," while the lug numbered #2 has no other marking.
> > >
> > > Are these things polarized? Does the "LINE" lug go to the +13.8VDC
> >source
> > > and the non-LINE go to the positive terminal on the rig?
> > >
> > > Thanks for any clues.
> > >
> > > Bernie K5XS
>
>
>
>
>
>
>
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