[TowerTalk] Coax grounding at tower base and inside at shack

Andrew J. Buckler (BBMSC) andrew.buckler at bbmsc.com
Tue Nov 20 07:50:06 EST 2012


Is it better to use a grounding kit that strips the outside insulation and clamps to the braid, e.g., http://www.l-com.com/item.aspx?id=20935, or a Polyphaser, e.g., http://www.hamradio.com/detail.cfm?pid=H0-005964?

In either case, there would be two places to use whatever is decided, one connected to a ground plate at tower base, and then another connected to a plate inside at the shack.

I am designing for a 10m/6m duobander, cross-polarized stacked 2m yagis for EME, and a 70cm yagi. I haven't fully worked out how many lines this comes to, but call it 5. So x2 for the two points at which I am doing this for a total of 10. The price for the clamps would then be about $200, or for the Polyphasers, about $700. I'm less worried about cost than performance but of course want to do the right thing.

Thank you,
Andy, K2OP
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BBMSC
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