[TowerTalk] Impedance at the Feedpoint

[Steve Hunt]

An EZNEC model of an Inverted-L with 60ft vertical and 77ft horizontal 
gave me a resonant feedpoint resistance of 32 Ohms at 1.8MHz when the 
ground loss resistance was 13 Ohms. That same antenna at 3.5MHz had a 
feedpoint impedance of 6000-j1000 Ohms.

That's to be expected - the wire is close to a half-wave long on 80m.

73,
Steve G3TXQ

On 06/11/2010 20:21, Bill Gillenwater wrote:
> If you have a feedpoint impedance of 32 ohms on an inverted "L" for 1.8 mhz, can anyone venture a guess as to what the impedance would be of the same antenna at 3.5 mhz ??
>
> thanks, Bill
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