[TenTec] RF choke for Titan 425?

[Rich Hallman - N7TR]

All of the chokes that have failed have been a single section choke.  Even the Titan gold which is one of the last built had a single section rf choke.

Thanks....

On Oct 29, 2012, at 6:53 PM, "GARY HUBER" <glhuber at msn.com> wrote:

> 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....
> 
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec 
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec