Re: [TenTec] Built in SWR meter bannans [common mode UNUN location ]

["K7TXO" <gfstory@earthlink.net>]

Bob -
For the sake of discussion;  for a 1:1 UNUN at the "shack" end of an antenna 
cable, is there an optimal location for Jim to put this UNUN?
I mean, will placing it right at the back of his amplifier out connector be 
appropriate or outdoors, just outside of the shack?
Gene  /  K7TXO

----- Original Message ----- 
From: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Sunday, April 21, 2013 3:57 PM
Subject: Re: [TenTec] Built in SWR meter bannans


> Sounds like RF current on the shield when on the antenna and not on the 
> dummy load.  I suggest a 1:1 UNUN balun between the amp and the antenna. 
> I've had good success with a product from The Wireman being model #8232. 
> Certainly worth a try.
> 73
> Bob, K4TAX
>
>
>
>
> ----- Original Message ----- 
> From: "Jim GM" <jim.gmforum@gmail.com>
> To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
> Sent: Sunday, April 21, 2013 11:13 AM
> Subject: [TenTec] Built in SWR meter bannans
>
>
> > I have a Tec Tec Auto Coupler that is turned off and a Ten Tec Hercules II
> > at full power. The SWR bridges in side the equipment reads well over SWR
> > over 3:1 on certain bands while my BIRD Watt meter read 2:1.
> >
> > ALL SWR meters is at 1:1 into a dummy load so that rules out the BIRD is
> > whacked.
> >
> > This problem seams to mainly happen on 160M however I have seen it do 
> > this
> > on different bands with other antennas in the past.
> >
> > Are the diodes going into saturation?  I am going BANNAS with this issue.
> >
> > --
> > Jim K9TF
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>
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