[Elecraft] 80 Meter Verticals

[donovanf at starpower.net]

Hi Ed, 


What is your ground system for your 630 meter inverted-L? 


Many of us will be ready for a QSO with you with our lowfer 
capable K3s when the band is available. I'll use a 1/4 wavelength 
inverted-L with 180 ft vertical and 350 feet horizontal using the 
radial system for my 160 meter 4-square array (240 radials 
125 feet long). 


73 
Frank 
W3LPL 

----- Original Message -----

From: "Edward R Cole" <kl7uw at acsalaska.net> 
To: "Elecraft Reflector" <elecraft at mailman.qth.net> 
Sent: Thursday, March 2, 2017 8:33:27 AM 
Subject: Re: [Elecraft] 80 Meter Verticals 

I did that on my 630m inverted-L. Obviously 43-feet vertical is very 
short on 495-KHz (less than 10% of a quarter wave), so the antenna is 
heavily base loaded by a coil plus the 122-foot top section adds a 
little capacity. I ran three wires in parallel spaced a foot apart 
in the vertical section tied together at both ends with 1/2 inch 
copper tube and the top hat is two parallel wires space 2-foot with 
another 1/2 inch copper tube at the far end. This lowered the Q 
enough to get SWR<2.0 over 5-KHz bandwidth. 

I will have to retune to 472-479 KHz when I hang the antenna back up 
after repairs as this is the proposed frequencies for a future ham band. 

I operate with 100w (1.3w ERP) under the call sign WD2XSH-45 (ARRL 
sponsored Experimental License). 

73, Ed - KL7UW 
http://www.kl7uw.com 
Dubus-NA Business mail: 
dubususa at gmail.com 

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