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Re: [TenTec] Centurion problem

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Centurion problem
From: John <jh.graves@verizon.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 07 Jan 2013 13:49:31 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Joe,

Does this mean you will accept the email without permission if it is simply inane?

John / WA1JG

On 1/6/2013 9:40 PM, k0bx@arrl.net wrote:
Joe K0BX

  Stop the insanity!
Please do not add me to any distribution lists (Joke, Stories or Junk) without
my permission.




________________________________
From: Jim Brown <k9yc@audiosystemsgroup.com>
To: tentec@contesting.com
Sent: Sun, January 6, 2013 5:56:05 PM
Subject: Re: [TenTec] Centurion problem

On 1/4/2013 2:08 PM, Doyle wrote:
I have been having problem with my receive not returning after transmitting.
This also happens using either a TS-590 or Omni VI.

      Is it possible to clean the relay contacts in the amp?  Where is the relay
located?located.
It sounds like a vacuum relay going bad. Contacts are not accessible. You
replace the relay.  Ten Tec is VERY expensive as a source of parts, and as a
reapir station.  If you have reasonable soldering skills, you can replace the
relay in an hour or two. You'll need to figure out the manufacturer's part
number.  Ten Tec used two over the years, KiloVac and Jennings. They are very
different physically, so you need to figure out which you have. The Jennings is
an RJ1A, and sort of looks like a stack of nickels with leads on top. The
KiloVac is long and skinny, with leads along the body.

You also need to know the coil voltage. I don't know the Centurion, but Titans
use 28Vdc, and the Hercuules II uses 12Vdc.  Look at the schematic to figure out
what the voltage is for the low voltage power supply.

These relays are widely available in the $75 range, both as "pulls": from
mdiecal electronics, and new from a company called GigaVac. Alpha now uses
GigaVac, and I've been using them for about five years.  GigaVac will sell them
direct to hams at a discount, about $75, and you can also buy them from a
dealer, Max Gain Systems.

73, Jim K9YC
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