Re: [TenTec] Antenna question

["Ron Castro" <ronc@sonic.net>]

Phil:  Try changing the length of the transmission line.  You may need only 
a few feet, however you can "rotate" the impedance by adding or subtracting 
about 30' of open line.
        Ron   N6IE
     www.N6IE.com

----- Original Message ----- 
From: "Phil Sussman" <psussman@pactor.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, January 21, 2009 5:15 PM
Subject: [TenTec] Antenna question


> This may be a bit off-topic - If so please forgive me:
>
>
>
> I'm working with a fellow who has problems loading an 80M loop antenna 
> with
> ladder line and a tuner. His antenna is about 380ft and I think that it's 
> a bit
> short. I borrowed my Nye-Viking and the best that I can achieve is 3 to 1 
> match
> at 3800 KHz.
>
> At that point the tuner is applying MINIMUM capacitance. That makes me 
> think
> that a longer antenna length is needed.
>
> As an aside 40m loads no better 2.5 to 1, but 30m loads up OK.
>
> If I take his balanced line and feed it as a long wire (one end 
> unterminated)
> the system loads up just fine on 40m and 80m, but it is obviously 
> unbalanced.
> Any quick hints appreciated -- I'm not the best with HF antennas.
>
> PS. My 80m loop antenna is 420ft long and loads as balanced just fine.
>
> de Phil - N8PS
>
>
>
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