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Re: [TenTec] Titan 425 RF Choke Replacement?

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] Titan 425 RF Choke Replacement?
From: "CSM\(r\) Gary Huber - AB9M" <glhuber@msn.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 12 Jul 2009 21:31:08 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
I may have mis-stated the RF Choke problem.... it was a self resonance problem. 
The burnt choke is just tightly wound, while later chokes have sections of 
tight winding connected by sections of wide spaced spirals... 
--------------------------------------------------
From: "Rich Hallman - N7TR" <rich@n7tr.com>
Sent: Sunday, July 12, 2009 9:14 PM
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] Titan 425 RF Choke Replacement?

> This happened on 15 meters...but I noticed it was tuning weird on 20
> meters as well.  Since this was the last series to be built...I would
> have assumed it has the latest updates.  Maybe not....
> 
> Rich
> 
> -----Original Message-----
> From: tentec-bounces@contesting.com
> [mailto:tentec-bounces@contesting.com] On Behalf Of CSM(r) Gary Huber -
> AB9M
> Sent: Sunday, July 12, 2009 7:04 PM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] Titan 425 RF Choke Replacement?
> 
> I lost the RF Choke on my Titan 425 shortly after I purchased it April
> 1990. It is an early export model. Ten-Tec sent me a replacement choke
> which I installed. Unfortunately one of the tubes was damaged,
> necessitating a return to Ten-Tec. They replaced both tubes and put in
> "upgrades" to the then current production specs under warranty. As I
> understand it, early 425 RF Chokes did have a problem with parasitic
> currents.... mine failed the first time I attempted to tune it up on 15
> Meters after working for weeks on 20 CW. No problems since.
> 
> Best regards,
> 
> CSM(r) Gary Huber - AB9M
> 9679 Heron Bay Rd
> Bloomington, IL 61705
> (309-662-0604)
> www.csm-gh.com
> glhuber@msn.com
> gary.huber@us.army.mil
> 
> --------------------------------------------------
> From: "Rich Hallman - N7TR" <rich@n7tr.com>
> Sent: Sunday, July 12, 2009 7:27 PM
> To: <tentec@contesting.com>
> Subject: [TenTec] Titan 425 RF Choke Replacement?
> 
>> Has anyone had to replace their RF Choke on a 425?  Mine burned up
> this
>> weekend in IARU and need to replace....If you did replace the choke,
>> what did you get ?  RF Parts RFC-3 or does TenTec have these in-stock?
>> Any known issues with these...?  This was from one of the Golden
> Series
>> last version Titan 425's.
>> 
>> 
>> 
>> Thanks...
>> 
>> 
>> 
>> Rich N7TR
>> 
>> ex KI3V, N3AMK, WB3JOV
>> 
>> www.n7tr.com <http://www.n7tr.com> 
>> 
>> Telnet: dxc.n7tr.com N7TR DXCluster
>> 
>> 
>> 
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