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Re: [TenTec] Zepp?

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] Zepp?
From: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sat, 13 Sep 2014 20:59:09 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Because the MFJ 929 tuner only has unbalanced outputs thus no provision for feeding a balanced load.

73
Bob, K4TAX



----- Original Message ----- From: "Richards" <jrichards@k8jhr.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Saturday, September 13, 2014 8:36 PM
Subject: Re: [TenTec] Zepp?


Yes.... so, I try my question again: Why does he need a balun? Why not just connect the tuner to the feed line and skip the balun ?

Here is why I ask: The tuner will take itself off line whenever SWR exceeds some threshold and power exceeds 75 watts. As the inquisitor said, he must cycle the unit off-and-back-on to resume or restart the tuning function.

Let's just assume for a moment the problem is NOT CMC on the window line... why not just remove the 4:1 balun and see what gives?

I hope this is no misplaced, but a serious application of Occam's Razor suggests to assume no balun is needed between the device and the antenna elements. Why presume CMC or other problems ? Why not just remove the 4:1 transformer and see if it tunes without it?

That worked in my case.  Less is more, sometimes.

Any traction?     Now where is my Teflon suit...       ;-)       ;-)

-----------------------------  K8JHR  ----------------------------




On 9/13/2014 9:13 PM, Bob McGraw - K4TAX wrote:
My take is to bring the balanced line all the way inside to the tuner.
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