[TowerTalk] R7000

Rudy Severns n6lf at arrl.net
Mon Sep 15 12:16:15 EDT 2008

Some multiband commercial verticals will work without a ground system. 
During my experiments earlier this year I tried an R7000 first with a large 
ground system and then removed the ground system.  I could barely tell the 
difference.  This check was done on 40m.  Didn't see if this held for the 
higher bands but I suspect it would.

The signal from the R7000 was a couple of dB lower than a full 1/4-wave with 
the same ground system.  I suspect that was mostly due to loading 
inefficiency which is to be expected in short loaded antennas.

73, Rudy N6LF 

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