A) not enough hoisting grips were used and b) the cable had pulled away from
the tower in a number of places (a mish-mash of butterflies, tie wires, and
even rope were used to attach it). The end result was that the line
stretched, plus there were several holes in the outer conductor where it had
been rubbing against a tower member. It had been blowing air for probably a
year or more, but the station waited until it started arcing over before
they decided it was finally time to replace it...
--- Jeff
> -----Original Message-----
> From: [email protected]
> [mailto:[EMAIL PROTECTED] On Behalf Of Eric Lemmon
> Sent: Saturday, December 31, 2005 11:26 AM
> To: [email protected]
> Subject: RE: [Repeater-Builder] Bad 4" Heliax (Was Polyphaser Help)
>
>
> Jeff,
>
> How does 4" Heliax "go bad?" If the feedline was properly
> installed and
> pressurized, what else besides a bullet hole would prompt the
> removal of
> that cable? That size Heliax is probably $40 per foot, plus the
> labor...Geez!
>
> 73, Eric Lemmon WB6FLY
>
> <snip>
>
> I've got a better one. A number of years ago we changed out
> a 1500' run of
> 4" Heliax that had gone bad on an FM station. Upon taking
> down the old line
> and looking at the damage, one of the problems we found was
> that the ground
> kits (approximately 8) were all installed without removing
> the outer jacket
> from the cable...
>
> --- Jeff
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
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