Topband: 1/4 wave vertical

[Jon Zaimes AA1K]

Hi Al,

Full-size 1/4 wave with Rohn 25 -- about 11 inches on a face -- is about 128 feet tall. Your tower should be pretty close to that, maybe slightly taller. Common method is to put up 120 feet of tower and then make the remainder a piece of aluminum tubing clamped to the tower, and adjustable up/down to resonate the tower.Fastening with a couple of hose clamps will work.

My Rohn 25 for 160 is only 100 feet, and I have a small 6-meter yagi on top that brings it into resonance on 160.

73/Jon AA1K
Web site: www.aa1k.us



At 05:31 PM 9/9/04, you wrote:
>hi all how long should a 10 inch per side tri tower be for 160m es under gnd radials be Al  vk3pa
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