[TowerTalk] Coax for crank-up TX-455

[Al Williams]

I used a section of old, leaky garden hose bent curved to spread the weight 
of the coax cable.  Seems to work fine with the LMR400 without sectional 
supports on the LM470 crankup.

k7puc


----- Original Message ----- 
From: "wa5zup" <wa5zup at msn.com>
To: "'Jim McDonald'" <jim at n7us.net>
Cc: <towertalk at contesting.com>
Sent: Friday, July 06, 2007 6:31 AM
Subject: Re: [TowerTalk] Coax for crank-up TX-455


> What size PVC did you use?
>
> My thought was to tape the cables along the top stand-off, then create a
> small loop, so they do not make a sharp bend. Then use a Kellem type grip
> attached to the standoff ring to support the vertical weight of the 
> cables.
>
> Would that idea work?
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of Jim McDonald
> Sent: Friday, July 06, 2007 6:41 AM
> To: Bill Ogden; K7LXC at aol.com
> Cc: towertalk at contesting.com
> Subject: Re: [TowerTalk] Coax for crank-up TX-455
>
> Om my US Tower, I use a 90 degree PVC sweep in the top stand-off, held in
> place with 10 or 20 mil thick pipe wrapping tape. I tape the cables to the
> standoff arm before they enter the sweep.
>
> Jim N7US
>
>
> -----Original Message-----
>
>
>>>  The #10 wire is attached to the tower at the top and bottom, on the
> theory
> that the sliding joints and steel cables may not have the best 
> connections.
>
>  > Connections to what? Just curious.
>
> The connection reference was for good RF connections between the tower
> sections. This would seem to be important for the half sloper.
>
> The dowel (in the top cable guide, with the cables taped to it) provides a
> form of strain relief -- otherwise the weight of the cables would rest on 
> a
> rather sharp right-angle bend where they would go over the top cable 
> guide.
>
> Bill - W2WO
>
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