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From: Gor#f@mit-eddie.ARPA
Newsgroups: net.ham-radio
Subject: Strange antenna
Message-ID: <9489@brl-tgr.ARPA>
Date: Mon, 25-Mar-85 22:53:58 EST
Article-I.D.: brl-tgr.9489
Posted: Mon Mar 25 22:53:58 1985
Date-Received: Fri, 29-Mar-85 01:41:09 EST
Sender: news@brl-tgr.ARPA
Lines: 18

I find myself desiring an antenna that has a funny patern, and the usual
HAM literature on antennas doesn't seem to cover what I want.

I run a packet BBS, and many of my users get to me via a distant digipeater.
They are in an area where there is no PBBS, and mine is closest to the
mountain mounted digipeater.  The trouble is that the digipeater can hear
so well, that during busy times the path is not very usable, due to collisions
between my packets and those of stations who can't hear me at the digipeater
receiver.  I don't want to increase power because the area north of Boston is
congested enough.  I don't want to simply use a beam pointed at the digipeater
because I do have truely local users, and other PBBSs that I have a mail
forwarding relationship with.

What I would really like is a significant antenna gain in the direction of the
digipeater, without any significant nulls in other directions.

Any thoughts?
73's -Bill