| To: | WA3GIN <wa3gin@comcast.net>, TowerTalk <towertalk@contesting.com> |
|---|---|
| Subject: | Re: [TowerTalk] Irrigation pipe vertical |
| From: | Red Haines <redhaines@acegroup.cc> |
| Date: | Sun, 02 Dec 2007 09:50:25 -0600 |
| List-post: | <mailto:towertalk@contesting.com> |
WA3GIN wrote: > Does anyone know what the resonant freq. is of the 30ft of 3" tubing > without the addition of a top hat? > > Thanks, > dave > wa3gin > EZNEC predicts the resonant frequency is near 7.9 MHz. Adding a top hat of 4 spokes 2.5 feet long lowers it to near 7.1 MHz. Adding 2 spokes 2.5 feet long brings it near 7.4 MHz 73 de Red _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk |
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