A question to the list.
>From a planned antenna installation on a chimney, coax (BuryFlex)
needs to be routed roughly 10' along the adjacent sloping roof
surface to a ridge where it needs to run about 20' to the gable peak
where it can run down an unrelated fiberglass mast and then to the
ground along with a couple of other feedlines.
The problem I'm trying to find a simple solution to is one of
protecting the shingles from damage as a free coax run would cause a
working back and forth across the shingles in the wind over time.
Anchoring the coax seems to be a good solution but with what? And
how to do it so the wind won't lift the whole line and damage the
shingles or cause a leak?
An alternative seems to be to rig sleepers over and along the ridge
so that they don't have to be anchored but how to keep the whole
thing from lifting in the wind and causing damage anyway? And what
would they be made of? Commercial sleepers are PVC but meant to lie
flat on a flat roof, not sure it'd be a good choice in this
Thought about running a cable directly from the lower chimney mount
to the fiberglass mast (pretty much a level run) and having it
support the feedline, as a catenary, but the tension required is in
the hundreds of pound range for a sag of a foot or more. Not sure I
want to subject the chimney to any more loading than is necessary and
it's a bit of a side load on the fiberglass mast, too.
So, I'm pretty much out of options. Is there some commonly available
roofing item that makes this an easy thing to do or is there some
other way to do this that I'm missing?
Running in to the attic space is not an option, I think, as there's a
gas line for the furnace there and lightning wouldn't be a good thing.
This feedline, and the others it meets up with at the fiberglass
mast, are to be grounded via Times ground kits, through a Harger #301
clamp, to a copper clad ground rod where they come to the ground and
are then buried around to the master ground bar at the service
entrance. This ground rod is part of a lightning ground field as
Any suggestions, thoughts, pointers, etc., are greatly appreciated.
Pete Goudreau, AD5HD
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