Yep...that's it!
Ron N6IE
www.N6IE.com
----- Original Message -----
From: "Jason Cooper" <jbear45@msn.com>
To: "Ron Castro" <ronc@sonic.net>; "Discussion of Ten-Tec Equipment"
<tentec@contesting.com>
Sent: Sunday, December 05, 2010 6:28 PM
Subject: [TenTec] Titan 425 3CPX800A7 Modification
>I believe that this is the web page that has that modification.
>
> http://www.hamradiomarket.com/articles/Titan%20P%20Hybrid.htm<http://www.hamradiomarket.com/articles/Titan%20P%20Hybrid.htm>
>
> 73,
> Jason KN7AZ
> ----- Original Message -----
> From: Ron Castro<mailto:ronc@sonic.net>
> To: k9yc@arrl.net<mailto:k9yc@arrl.net> ; Discussion of Ten-Tec
> Equipment<mailto:tentec@contesting.com>
> Sent: Friday, December 03, 2010 1:26 PM
> Subject: Re: [TenTec] TITAN 425 PS maintenance
>
>
> There was an article from a ham in Texas on the internet on modifying the
> 425 for 3CPX800's but I can't find it. I recall it required an entire
> new
> supply, including a custom-built Hypersil transformer from Peter W. Dahl
> that ran more voltage and current than the original and fit in the power
> supply cabinet. With the higher plate voltage, less drive was required,
> and
> lower grid current for legal power, but I think the real object was to
> run
> much more than legal power. The author claimed he tested the modified
> amp
> at 3.2 kW PEP out..."on a dummy load of course" (yeah, right!). I guess
> everything's bigger in Texas!
>
> Like one Texan told me: "Go big or stay home"....
>
> Ron N6IE
> www.N6IE.com<http://www.n6ie.com/>
>
> ----- Original Message -----
> From: "Jim Brown"
> <k9yc@audiosystemsgroup.com<mailto:k9yc@audiosystemsgroup.com>>
> To: <tentec@contesting.com<mailto:tentec@contesting.com>>
> Sent: Friday, December 03, 2010 1:04 PM
> Subject: Re: [TenTec] TITAN 425 PS maintenance
>
>
> >
> > One thing you would need to consider is what other high voltage
> > capacitors are in the RF deck that might need to be replaced with parts
> > rated for higher voltage.
> >
> > As I understand it, the main reason for using higher voltage with 3CPX
> > tubes is that you can achieve legal power with less plate current. I
> > don't know if there would be reduced drive requirement, or less grid
> > current. Since the primary failure mechanism in these tubes is
> excessive
> > grid current, that's what I would pay the most attention to.
> >
> > Also, I don't know what's in this board, but to get higher voltage, you
> > would probably have to replace the power transformer as well.
> >
> > The only condition under which I would look at this board as a
> > replacement is if most of the power supply went up in smoke. :)
> >
> > 73, Jim K9YC
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com<mailto:TenTec@contesting.com>
> >
> http://lists.contesting.com/mailman/listinfo/tentec<http://lists.contesting.com/mailman/listinfo/tentec>
> >
>
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