Re: NOT the feedline

Posted by Peter W2IRT on Jun 02, 2020; 5:20am
URL: http://elecraft.85.s1.nabble.com/Re-NOT-the-feedline-was-KPA-1500-faulting-on-6m-SWR-issues-tp7661502p7661565.html

I have an HF-Auto that is just unsuitable for contest/DX duty, even with the kludge workaround software--which often doesn't work right. I gave up on it and hope to sell it to a ragchewer who will undoubtedly make better use of it than I ever could.

And I agree about the Palstar support being...unpleasant. I saved up for 3 years to buy that and I feel sick about it. I would like to find a good high-quality tuner that is reliable and able to comfortably handle 1500W and (preferably) tune automatically via CAT control.

 - pjd

-----Original Message-----
From: [hidden email] <[hidden email]> On Behalf Of Adrian
Sent: Monday, June 1, 2020 11:32 PM
To: [hidden email]
Subject: Re: [Elecraft] NOT the feedline

My recent experience with Palstar has not been good. An expensive DL1500 dummy load in which the SO239 had not been mounted correct bwith the locknut still ten turns loose,

requiring dismantle and repair new out of the box by myself. Also a new expensive AT2K tuner in which the roller inductor shaft had not been graphite greased nor tensioned.

My SPE amp @ 400w went out on alarm quickly until I disassembled and repaired myself. I found Palstar support rude and in self denial of the issues I raised.

In hindsight I should have saved a heap of money and gone with MFJ.


On 2/6/20 1:08 pm, Jim Brown wrote:

> 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
>

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