On Wed, 12 Nov 2008 18:15:37 +1100, Gary Smith wrote:

Hi, i am going in a VHF/UHF contest this weekend and have a question
about stacking beams.
We will have a pole approx 15-20ft long and want to stack the following
antennas,

1x20 element UHF yagi
1x10 element 2 Metre Yagi
1x5 element 6 Metre Yagi.

UHF yagi is approx 6-8ft long
VHF is approx 6ft long
6M is approx 17ft long

They are all horisontally mounted. I am guessing it will be UHF at top,
then 2 mtr then 6 mtr.
What i would like to know is if this pole is long enough to space them
vertically enough or not.
If so, what distance should they be?

Thanks

Gary
VK3LCD

It should work. Try to get at least a 1/4 wavelength between them (a
half wavelength would be better. If you can get the 50 MHz 3 meters off
the ground and the 70 CM on top, and split the difference with the 2
meters, it should be a good place to start. Do you have a VSWR meter
e.g. MFJ-956?