To: | <topband@contesting.com> |
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Subject: | Re: Topband: Best 160 antenna |
From: | "StellarCAT" <rxdesign@ssvecnet.com> |
Date: | Mon, 28 Aug 2017 09:03:23 -0400 |
List-post: | <mailto:topband@contesting.com> |
Really? Well established FACT? I’m quite confused then as reading John’s book it seems quite nebulous the impact of elevated radials. Doesn’t seem to be a ‘fact’ – more dependent on location and other variables. I’m not suggesting you’re wrong – just it seems the jury is quite out on this ‘fact’. W8JI measured a -4.3 db difference between 4 elevated and only 60 (not 120) on the ground .... others show differences of -3 – almost -6 db ... I’m not sure itsquite that clear to say “well established fact” ... Gary K9RX The importance of a ferrite choke balun at the feedpoint cannot be overemphasized. A good design for 160m is 5 or 6 turns of coax wound through five stacked 2.4" 31-material ferrite toroids. Photos and details on my web pages referenced earlier. I had two elevated radials. It is a well-established fact that four 10' or 12' high 1/4 wave radials are as good as 120 on the ground. 73 Mike www.w0btu.com _________________ Topband Reflector Archives - http://www.contesting.com/_topband |
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