[50mhz] Stacking interaction with 15 & 20 monobanders?

[Carl]

There should be minimal interaction with those bands as the element spacings 
are too wide to represent a ground plane to 6M as well as not having 
resonant elements.

Ive even run a 6/6 above and below a 3 el 20 with no apparent problems.NEC 
said there were but they were too small to be apparent.

Carl
KM1H

----- Original Message ----- 
From: "N3XX - Tim Heger" <n3xx at charter.net>
To: <50mhz at mailman.qth.net>
Sent: Tuesday, July 08, 2008 7:56 PM
Subject: [50mhz] Stacking interaction with 15 & 20 monobanders?


Looking for opinions on possible interaction if I mount a 6 Mtr yagi between 
my existing 15 and 20 Mtr 5 element monoband yagis on the same mast.  The 15 
and 20 Mtr yagis are 11 ft. apart on the mast, and I would be mounting the 6 
Mtr yagi midway between them.  So about 5.5 ft. distance to either of the 
yagis above and below.  The 6 Mtr yagi would be 5 elements, on an 18 ft. 
boom.  Would like another element or two, but don't want to add too much 
more wind load to the mast with the additional boom length.
I'm afraid the other antennas would be too close, and possibly the 6 Mtr 
yagi wouldn't perform well in this configuration, but trying to save on the 
additional money that would be spent to rotate the antenna with a side mount 
arrangement on the tower.
I guess I could just go ahead and put it up there and see what happens.  It 
could always be moved if there is a problem.
Or, maybe someone has a good low cost solution to antenna rotation with a 
side mount.  The TIC rings are nice, but would be spending about 3 or 4 
times more for the rotator than was spent for the antenna.

Thanks - 73,
Tim - N3XX
Moderator: Ray Brown, KB0STN
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