[TowerTalk] tri banders vs mono banders

[Jim Idelson]

Hi Jay,

I have a one-tower station. 80 feet Rohn 25 with 16 feet of mast above the 
tower. I currently have a tribander on the mast and 10, 15 and 20m monobanders 
fixed on Europe at various heights on the side of the tower. These are all fed 
separately - no phasing/stacking yet. Can you comment on the following ideas?

Idea #1: Keep the antennas roughly as they are, but adjust the monobanders to 
the right stacking separations beneath the tribander. Add phasing/stacking 
switches.

Idea #2: Move all three monobanders up onto the mast with 8-foot separation and 
move the tribander down the tower to a side mount at a compromise stacking 
spacing.  Add phasing/stacking switches.

Idea #3: Do something else. Don't mix tribander and monobanders in a stacked 
config.

Questions:
1.  Remind us of the issues around stacking dissimilar Yagis.
2.  What kind of stacking hardware configuration can you provide to handle the 
tribander [w/single-feed]/monobander mix?

Although I could have directed this to you privately, I was thinking that your 
answers might be of interest to the many one-tower readers of this reflector . 
 .

73,

Jim K1IR



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