[TenTec] Zepp?

Bob McGraw - K4TAX RMcGraw at Blomand.net
Sat Sep 13 21:59:09 EDT 2014


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 at k8jhr.com>
To: "Discussion of Ten-Tec Equipment" <tentec at 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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