[TowerTalk] 80-75M Inverted Vee or Dipole

[Tom Rauch]

From:           	K7GCO@aol.com
Date sent:      	Sun, 10 Sep 2000 15:58:22 EDT
Subject:        	[TowerTalk] 80-75M Inverted Vee or Dipole
To:             	towertalk@contesting.com

> 
> Let me drag you all kicking a screaming back to the last Century.  
> 1.) Cut an Inverted vee or dipole (no bow tie needed) for 1/2 WL at 3.6
> MHz.  2.) Connect 136' of open wire line (121.6' 450 ladded line).  This
> really works 
>      great on 160M also but the feedline is twice as long.  

I assume on 160 the dipole length is doubled also? 

> 3.) Short out feedline and grid dip to 3.6 MHz.

By trimming the feedline?

> 4.) Connect one feedline wire to center of coax switch or directly to rig.
> 5.) Connect other feedline wire to stator of BC 3 gang variable all tied
> together. 6.) Connect rotor frame to coax switch or rig ground. 

How do you make the antenna go below 3.6 MHz, with only a 
series capacitor, if the antenna and feedline is resonant on 3.6?

I understand how a series capacitor will cancel inductive reactance 
as frequency is increased, but how does it cancel capacitive 
reactance when you move below 3.6?   


73, Tom W8JI
w8ji@contesting.com

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