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Too lossy a system.
Simple solution is to get some fibreglass the same as the inside diameter near the base of the flagpole, cut the flagpole at 5/8ths or maybe about 6 inches shorter than 5/8ths then insert the fibreglass or delrin so as to isolate it. Leave a good four inch gap. Then just use either a loop or coil matched to 50ohm and forget the gamma. He could then just use a thin aluminum rod at the top on a hose clamp and slide it up and down to fine tune it.

[QUOTE="nav2010, post: 395396, member: 14757"] Too lossy a system. Simple solution is to get some fibreglass the same as the inside diameter near the base of the flagpole, cut the flagpole at 5/8ths or maybe about 6 inches shorter than 5/8ths then insert the fibreglass or delrin so as to isolate it. Leave a good four inch gap. Then just use either a loop or coil matched to 50ohm and forget the gamma. He could then just use a thin aluminum rod at the top on a hose clamp and slide it up and down to fine tune it. [/QUOTE]

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