[TowerTalk] R7000

[Jim Lux]

-----Original Message-----
>From: Rudy Severns <n6lf at arrl.net>
>Sent: Sep 15, 2008 9:16 AM
>To: towertalk <towertalk at contesting.com>
>Subject: [TowerTalk] R7000
>
>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.
>

What was the height of the base of the R7000 above ground?
i.e. was it basically acting as an elevated (shortened) vertical dipole?
(with the feedline and/or radials at the bottom acting as the "other half" of the dipole)