[Elecraft] NOT the feedline

[Jim Brown]

On 6/1/2020 5:47 PM, Peter Dougherty wrote:
>   Ten-Tec Tuner,

This might be it, Peter. ! I've used (and loved) the Ten Tec 229 and 238 
tuners, but some of their fixed capacitors are under-rated for power. 
This is fairly well known among Ten Tec users, so I read about it 
somewhere and replaced those in my tuners with caps having higher power 
ratings.

There's another design flaw -- their antenna selection switch fails to 
to provide a return for RF current, using the chassis instead. This adds 
inductance in series with the signal path, which increasingly degrades 
SWR and crosstalk with increasing frequency. Palstar makes the same 
mistake in tuners I saw at Dayton 8-10 years ago. When I pointed it out 
to a guy in their booth who claimed to be its designer, he told me I was 
crazy!

73, Jim K9YC