In a message dated 12/31/01 9:05:20 AM Pacific Standard Time,
res0958z@verizon.net writes:
> Having looked at the Polyphaser and Andrews coax grounding systems, and
> primarily considering costs to install a number of these coax ground kits
> (ie, top of tower, bottom of tower, at SPG bulkhead panel, etc) has anyone
> any clever ideas for accomplishing the same thing at less cost?
Not that I've ever seen. The coax shield-to-ground connection has to be a
very good compression joint since you can't solder it and an exothermic
application will melt the cable.
The compression joint has to provide a very low resistance path to
ground. Just putting a wire under a hose clamp won't do it.
> It looks as
> if the Andrews system even used about a 2-4" female barrel connector
> (PL258?) which is a feasible method, albeit I'd have some concern about
> insertion losses with several connectors. Any help?
>
I wouldn't worry about it. Connector insertion losses are very low - less
than 0.2 dB per connector and actually lower than that.
Some PL-259 females are sometimes referred to as SO-239's.
Cheers,
Steve K7LXC
Tower Tech
AN Wireless Self Supporting Towers are now available! Windloading tables,
foundation diagrams and charts, along with full details are now at the
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