[TowerTalk] [Bulk] Re: LMR600 up to the top of tower ?

[Grant Saviers]

An interesting idea.  What steel rope are you using?  Since the hardline 
easily has the strength to self support off a Kellem 90' of itself, does 
the wire rope somehow cause the hardline to coil?  How frequently does 
your tower go up and down?

I always figure 8 flake my cables on raising/lowering my HDX589s to 
avoid the twist a circular loop puts into them and thought that might 
work with hardline for a limited number of up/down cycles before it 
failed.  I have loop guides at each section top.  The cable bundle is 
stiff enough there isn't much wind movement.

Grant KZ1W

On 7/31/2015 20:24 PM, Drax Felton wrote:
> I do this with 1/2 hardline runs.   I wound a helix of steel rope around the bundle and let it take the weight and cinch on the cables all the way down.   Lowering the 90 tower just causes the hardline to form big loops on the ground.
> Tie down a length of it to an arm at the top so the cable connectors don't flex and its held away from the tower.
> Then use a turnbuckle on the steel rope at the bottom to keep it from swinging in the wind.
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> Sent from Outlook
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> On Fri, Jul 31, 2015 at 5:43 PM -0700, "Robert Harmon" <k6uj at pacbell.net> wrote:
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> I have a 380 foot coax run to the top section of my motorized tower when it is fully extended.
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> I am changing out all my old RG213 and thinking of saving a few db by going to LMR600 up to the top section then
> LMR400UF up from there for the rotor loop and up to the 40 meter beam and triband/warc beam on the mast.
> What do you think of LMR600 for this run from the shack up to the top section for a motorized tower ?
> When I lower the tower I am thinking I could coil the LMR600 into maybe 5 foot diameter coils on the ground.
> BTW the tower is 90 feet to the top of the top section when all the way up.
> Is this a bad idea ?  (I am hoping to avoid the cost of the flex LMR600UF if I can.)
> A side issue is I understand I have to be very careful not to nick the copper clad on the center conductor
> when installing a connector on the non flex LMR600.   I would use the Davis PL259 connectors for LMR600.   Anyway maybe this usage of the
> LMR600 is not a good idea, what do you think ?
>
> Bob
> K6UJ
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