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Path: utzoo!linus!philabs!cmcl2!seismo!brl-tgr!tgr!YOUNG@DEC-MARLBORO
From: YOUNG@DEC-MARLBORO
Newsgroups: net.ham-radio
Subject: Re:   Log-Periodic Dipole Array Antenna
Message-ID: <10635@brl-tgr.ARPA>
Date: Mon, 13-May-85 15:58:50 EDT
Article-I.D.: brl-tgr.10635
Posted: Mon May 13 15:58:50 1985
Date-Received: Thu, 16-May-85 02:57:33 EDT
Sender: news@brl-tgr.ARPA
Lines: 15

I think KLM offers a log periodic or two.  The "problem" with log
periodics is that they trade gain for bandwidth.  A properly designed
monoband yagi will have better gain than a multi-band log periodic.
From numbers that I've seen, a tribander will give more gain for a
given boom length than a log periodic (these were manufacturers gain
figures, not to be taken too seriously).  The only advantage I can
come up with for the log periodic is that it will cover the WARC bands.
Log periodics also have disadvantages in that all the elements must
be insulated from the boom, split, and fed.

I would go with the monobanders, or a good tribander before I would
go to a log periodic.

			Paul Young, K1XM
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