[TenTec] Omni 6/425 Titan - Losing receive audio / Titan 1 Relay replacement

[George Skoubis]

Hi,

  I see that GigaVac also sells new relays and has a "ham" price if you
have a callsign.  http://www.gigavac.com/products/relays/ham/index.htm

  The Jennings RJ1A replacement is listed for $69.00

  I haven't used one of these or have any affiliation with them, just
saw the relays advertised and your post jogged my memory.

73,

George / KF9YR

-----Original Message-----
From: tentec-bounces at contesting.com
[mailto:tentec-bounces at contesting.com] On Behalf Of Jim Brown
Sent: Sunday, December 12, 2004 9:24 PM
To: tentec at contesting.com
Subject: Re: [TenTec] Omni 6/425 Titan - Losing receive audio

On Sun, 12 Dec 2004 17:25:23 -0600, Jay Schwisow wrote:

>However, after another 30 minutes of operation I lost the receive
again.  I 
>am thinking I am having intermittent relay problems on the Titan.  Any 
>thoughts?

When this happened to my Titan (in the last hour of a CW contest) it was
the 
main antenna relay (on a board right next to the output coax connector).
DO NOT 
buy one from TenTec -- bloody expensive, and you can buy good condition
used 
pulls on the net for under $40. I bought two so I would have a spare.
It takes an 
hour or two to change it is the original Jennings relay. TenTec later
switched to a 
KiloVac relay, which requires a different PC board -- if you have that
one, you 
may need to buy one of the older boards from TenTec. And if you buy the
relay 
from TenTec, you'll get both the relay and the new board. $300. 

Here's where I bought mine. I see that they also sell Kilovac, so they
may have 
replacements for the newer relay too.  

http://www.mgs4u.com/RF-Microwave/vacuum-relays-SPDT.htm

Another hint. Relay failure can cause transistor failures on another
board that is 
under the tube sockets (easy to reach from underneath).  Don't run the
amp with 
the defective relay to avoid blowing those transistors. The replacement 
transistors should be easy to find. I had exact replacements in my
junkbox. 

Jim Brown K9YC


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