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" <[email protected]> To: "Elecraft Reflector" <[email protected]> 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: [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
