[TenTec] Ten Tec 253 Question

[Jim Brown]

I usually strip previous parts of the thread, but I'm leaving much of 
them in here for context.

Yes, the power rating of a tuner DOES depend on the impedance that is 
being matched. While the 229/238 series tuners are rated for legal 
limit, there are impedances that can release the smoke from one or two 
of the fixed capacitors. I've never run into arcing with them.

  The new Elecraft KAT500 auto tuner is rated for a 10:1 or better SWR 
for use with the KPA500 (which does as much as 700W going downhill with 
a tailwind), is rated and legal limit for an SWR of 3:1 or better.  I'm 
using the KAT500 with my Titan with antennas that are better than 3:1, 
and it seems to be happy. Three outputs, switching logic like the Ten 
Tec tuners.  $700 factory built, $50 less as a kit. Like Ten Tec gear, 
it's made in the USA.

73, Jim K9YC

On 12/26/2012 6:03 PM, Jerry, N9AW wrote:
> I use the 253 with a Centurion 422b at full KW.....no problem.
>
> 73
> Jerry N9AW
>
>
> ----- Original Message ----- From: "Bry Carling" <bcarling at cfl.rr.com>
> To: <tentec at contesting.com>
> Sent: Wednesday, December 26, 2012 6:03 AM
> Subject: Re: [TenTec] Ten Tec 253 Question
>
>
>> Thanks Dave,
>>
>> That is very good information. It sounds like if we used the 253 
>> tuner with something
>> hefty like the Centurion 422, it might not tolerate the high power. 
>> Sounds like it was
>> made to use with the solid state amps that put out a little less 
>> spark and grit!
>>
>> 73 de AF4K, Bry
>>
>> On 25 Dec 2012 at 20:01, Dave wrote:
>>
>>> Brian,
>>> If my memory serves me correctly, the TT 253 was only rated at 1kw
>>> pep and of course that is really dependent upon the load components
>>> that u are trying to match to 50 ohms. The specs for the solid state
>>> amp and the auto tuner are probably available on the web.