To: | <towertalk@contesting.com> |
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Subject: | [TowerTalk] Fwd: Change in Frequency As Antenna Height |
From: | "Jim Thomson" <jim.thom@telus.net> |
Date: | Thu, 2 Jun 2016 10:08:29 -0700 |
List-post: | <towertalk@contesting.com">mailto:towertalk@contesting.com> |
Date: Thu, 2 Jun 2016 17:51:07 +0100 From: Steve Hunt <steve@karinya.net> To: towertalk@contesting.com Here are the resonant frequencies I measured of a 10m half-wave dipole on a telescopic push-up mast at various heights above ground in my back yard: 5ft 29.359MHz 10ft 30.499MHz 15ft 30.889MHz 20ft 30.407MHz 25ft 30.179MHz Steve G3TXQ ## scale that up to 40m... then it becomes a 205 khz increase when going from 20 ft..to 100 ft. But I dont know if scaling or extrapolating the 10M data is valid. Jim VE7RF. _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk |
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