[TowerTalk] Stacking antennas Question

[Dan Schaaf]

I have an A3S Tribander on my tower and I want to add the A3WS 12/17 meter yagi above it. I have 7 ft of available mast above the A3S.
Is there any problem with mounting the 12/17 m yagi at 7 ft above the 10/15/20 yagi? The boom length on the 12/17 yagi is 14 ft and I have heard many times that 1/2 boom length is sufficient separation. The antennas are NOT harmonically related.

Best Regards
Dan Schaaf
K3ZXL   www.k3zxl.com   "In the Beginning, there was Spark Gap"