Dick,
You question is much more complex than it would appear because of the
five ham bands covered by a log periodic antenna. There's no simple
answer, and an EZNEC model would provide the most accurate understanding
of the tradeoffs.
The simple answer for a 5 band antenna is to use Phillystran or fiberglas for
at least the top 40 feet of each guy. Otherwise, use on
insulator every 8 feet or so for the top 40 feet of each guy.
73!
Frank
W3LPL
73!
Frank
W3LPL
---- Original message ----
>Date: Tue, 04 Sep 2007 19:26:42 -0400
>From: "Dick, W1KSZ" <w1ksz@earthlink.net>
>Subject: [TowerTalk] Insulator Placement Clarification
>To: TowerTalk <towertalk@contesting.com>
>
>Dumb question of the week:
>What if the antenna is a Log Periodic (10-30 MHz?
>
>73, Dick, W1KSZ
>
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