[TenTec] RF choke for Titan 425?

[GARY HUBER]

My Titan-425 also failed on 15 meters, the first time I used it there.  My 
Titan-425 is actually silkscreened as Model 425E on the back and came with 
10 Meters functional. The individual I purchased it from sold it to me 
through his amateur radio sales business, but had been supplying equipment 
to Pacific DX-peditions a year or two previously and had S/N 425-00516 as 
unsold (new) stock when Ten-Tec announced a new revised version. I was able 
to buy S/N 425-00516 for $1000 below the Dayton price of the new 425s and 
when I returned it to Ten-Tec, they replaced the defective plate choke, both 
3CX800-A7s and put in the new revisions as well plus shipped the 425 back to 
me express (so that I would have it for a DX contest) all NO CHARGE. My only 
expense was shipping and the phone call to the TT service department.

Rich, which style choke is in your Titans. Do you know the build dates? Are 
they built before or after 1990?


73 ES DX,
Gary -- AB9M

-----Original Message----- 
From: Rich Hallman - N7TR
Sent: Monday, October 29, 2012 8:20 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] RF choke for Titan 425?

I have looked at the Ameritron (RF Parts RFC-3) choke and Im not sure it 
will fit.  I am ordering one, but wanted to see what others have used since 
this seems like a common failure.   I have 6 Titan 425's here and have 3 of 
the amps that need the choke replaced.  Most failures have happened on 15 
meters.

Rich  N7TR

-----Original Message-----
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of GARY HUBER
Sent: Monday, October 29, 2012 5:35 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] RF choke for Titan 425?

Rich, my original (S/N 425-00516) Titan-425, smoked the plate choke right 
after I purchased it in May 1990. I believe the replacement is not 
continuous spacing but has several sections to avoid a resonance found in 
the early plate chokes.

See http://www.w8ji.com/rf_plate_choke.htm for plate choke theory, design, 
and testing.

73 ES DX,
Gary -- AB9M

-----Original Message----- 
From: Rich Hallman - N7TR
Sent: Monday, October 29, 2012 4:54 PM
To: tentec at contesting.com
Subject: [TenTec] RF choke for Titan 425?

What has been used as a replacement choke for the Titan 425?   Thanks....

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