[TowerTalk] swr for 40 meter rotatable diopole

[Keith Dutson]

Ten feet is a bit low for tuning.  A 40 meter dipole tuned at 15-20 feet
will resonate about 10-15 KHz higher at 78 feet.

Keith WD5DXL

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Van Fair
Sent: Sunday, June 06, 2004 5:47 PM
To: towertalk at contesting.com
Subject: [TowerTalk] swr for 40 meter rotatable diopole

Which way should the resonant frequency go as the height above ground is
increased for a 40 meter rotatable linear loaded diopole. If the swr is 2.0
to 1 at 7200 with the length set for 7200 10 feet above ground will the
resonant frequency go up or down as the antenna height is increased to 78
feet or will it stay at 7200 with just a lower swr.  thanks for any help.
Van W4GIW _______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any
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