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[TowerTalk] 40m 4square - factors relating to gain

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Subject: [TowerTalk] 40m 4square - factors relating to gain
From: K6NR@ARRL.net (Dana Roode)
Date: Sun, 11 Nov 2001 23:37:20 -0800
Towertalkans --

I recently built a 40m 4 square from telescoping aluminum - 4 ground mounted
verticals, phased with a Comtek box.  Each vertical has about 60 radials, a
little thin in the interior of the array as of yet.  The verticals are
mounted 35' on a side, and the power dumped into the dummy load is minimal
across the band.

Question - what sort of difference should I expect to hear on receive with
the 4 square vs a single vertical (not in the array)?  Im not seeing much
apparent gain on most signals - does that mean the array is not working?  I
do notice a good amount of directivity.  I have not been able to do any
transmit a/b tests with remote stations as of yet.

If the gain isn't what it should be, what factors on the 4 square contribute
the most to gain?

  Dana, K6NR

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