Here's what has worked for me. I have a 70' crank up somewhat overloaded.
Numerous antennas incl several for VHF and UHF.
I would say I have about 10 feed lines coming down to include several runs of
LMR 600.
I use KF7P products. At the top I use the 90 degree stand off and secured the
feed lines with tape and wire ties, which takes the load off
In each section below I have the standoffs with large rings, guiding the feed
lines. It collects nicely at the bottom, forming a couple of large loops.
I use ultraflex at the top only for rotor loop purposes. This system has
worked well for me.
73,
Ed NI6S
Sent from my iPhone
> On Oct 31, 2013, at 8:50, <w5gn@mxg.com> wrote:
>
> I guess if you have truly stiff coax, that can not bend, then how can you
> lower the tower? Won't it hold up the tower? J
>
>
>
> I've only experienced the problem when lowering the tower and I had a cluster
> of three large coax (can't recall now but low loss and moderately rigid) plus
> two rotator cables taped every foot, but as the tower lowers, the cluster was
> still able to bend to the will of the wind and when the tower was down 4 or 5
> feet, there was enough slack that the coax would be blown into the tower (the
> cable was on the SW side and that, of course, is the primary direction of
> wind in Dallas). When I first had run the cluster thru three standoffs,
>
> sometimes they would slide thru but often one of the tiewraps or a slight
> discontinuity in the line of the cluster was enough to hang on the standoff,
> causing slack to be created above that standoff.
>
> Even when I removed the intermediate standoffs, and had the full weight of
> the cluster hanging down, winds of 20 mph or better were enough to push the
> coax against the tower, and cause it to hang,
>
> sometimes on the top of the bottom section, again allowing slack to develop
> above that point. Using ropes tied where the intermediate standoffs would
> have been when fully extended allow me to pull the cluster awaw when lowering.
>
>
>
> 73
>
>
>
> Barry, EI/W5GN
>
> From: kr2q@optimum.net [mailto:kr2q@optimum.net]
> Sent: Thursday, October 31, 2013 5:45 AM
> To: w5gn@mxg.com
> Cc: towertalk@contesting.com
> Subject: Re: RE: [TowerTalk] COAX on CRANKUP-how to hang
>
>
>
> HI Barry...long time no see!
>
>
>
> For those of us without this experience, please explain how a "stiff" piece
> of coax enter between the zig/zags on your crankup. If I have a 10 foot
> length of coax and hold it vertically against the tower, I have push quite
> hard to get it to bend and then "enter" into the lattice. I am clearly
> missing something!
>
>
>
> thanks,
>
> Doug KR2Q
>
> ----- Original Message -----
> From: w5gn@mxg.com
> Date: Wednesday, October 30, 2013 8:13 am
> Subject: RE: [TowerTalk] COAX on CRANKUP-how to hang
> To: kr2q@optimum.net, towertalk@contesting.com
>
>> My experience is quite different.
>>
>> With either standoffs or a single support at the top,
>> lowering the tower when there was much wind would
>> frequently push the slack coax into the tower sections,
>> requiring a stop and either wait or raise a little and
>> try again.
>>
>> I finally supported the coax bundle only at the top,
>> and added two rope lines so I could pull the coax away
>> from the tower during lowering.
>> And I then ran the rope thru pulleys on the adjacent
>> house and use them to hang the coax so it's not on
>> the ground.
>>
>> I also found the remote control unit a complete waste of
>> money, as I always want to be at the base of the tower
>> to pull the coax away and observe what happens.
>>
>> Barry, EI/W5GN
>>
>> -----Original Message-----
>> From: TowerTalk [mailto:towertalk-bounces@contesting.com] On
>> Behalf Of kr2q@optimum.net
>> Sent: Wednesday, October 30, 2013 6:39 AM
>> To: towertalk@contesting.com
>> Subject: Re: [TowerTalk] COAX on CRANKUP-how to hang
>>
>> I have owned crank-up towers for close to 40 years...in multiple
>> locations and using multiple types of crankup towers (Heights,
>> Hy-Gain, US Tower). I still own 2 crank-ups.
>>
>> In all cases, I just let the coax and rotor cable "hang down"
>> right along side of the tower.
>>
>> I never used standoffs or coax arms. Not sure why they are necessary.
>>
>> Nothing ever got tangled or "hung up" in the tower. I think
>> that would be really difficult to do.
>> I mean, why would coax (eg, RG8 type) want to or be able to
>> "decide" to bend and enter into the tower lattice? It is
>> already handing from the very top to the very bottom. For me,
>> it would take an extraordinary act of nature to "convince" the
>> coax to defy gravity, bend into a small loop, and "enter" the
>> tower lattice.
>>
>> de Doug KR2Q
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
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>
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