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A99 is end fed antenna. That means coax acts as antenna, so pipe too. That is very bad.
To avoid is a must to make:
1. Choke balun right under antenna.
2. Choke balun at coax entrance to shack.

Balun - 11 turns of RG-58 on 2x FT240-52 cores (better) or 5 turns of RG-58 on 4.25" air cored (good for quick check).

Observe if during rain/wet soil static will be less. That means there is a problem with power transformer connections/grounding.
Mike
p.s. A99 is worst choice you could make IMO.
M

[QUOTE="sp5it, post: 639265, member: 10249"] A99 is end fed antenna. That means coax acts as antenna, so pipe too. That is very bad. To avoid is a must to make: 1. Choke balun right under antenna. 2. Choke balun at coax entrance to shack. Balun - 11 turns of RG-58 on 2x FT240-52 cores (better) or 5 turns of RG-58 on 4.25" air cored (good for quick check). Observe if during rain/wet soil static will be less. That means there is a problem with power transformer connections/grounding. Mike p.s. A99 is worst choice you could make IMO. M [/QUOTE]

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