[TowerTalk] Re: resonance

[Pete Smith]

At 09:43 PM 7/6/98 -0700, K4SB wrote:
>Pete Smith wrote:
>Just a bit of anecdotal evidence to support Tom's latter point -- when I
>measure the lowest-SWR point on my C-3 at the shack end of a long 75-ohm
>feedline, it appears right where it's supposed to be - 14.225.  When I
>add 2 feet of jumper and my SB-220 to the circuit, the "resonant
>frequency" shifts to 14.450!  Whatever else is happening, it's clear
>that the antenna's resonant frequency has not changed.
>> 73, Pete Smith N4ZR
>> n4zr@contesting.com
>> 
>Pete; A low point SWR does not indicate the resonance frequency of an
>antenna. From what you describe, I'd bet on RF on the outside of the
>feedline.


Sorry Ed, it doesn't fly.  I think this is a classic case of a feedline not
matched to the antenna.  There's no RF on the shield. 

73, Pete Smith N4ZR
n4zr@contesting.com 

"That's WEST Virginia.  Thanks and 73"

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