[TowerTalk] Fwd: hardline bending radius

Stan Stockton wa5rtg at gmail.com
Tue Nov 20 20:29:01 EST 2012


Perhaps you could just cut a short piece and experiment with it, if it is that important to bend it in the tightest radius possible.

Stan, K5GO

Sent from my iPad

On Nov 20, 2012, at 11:07 AM, Hans Hammarquist <hanslg at aol.com> wrote:

> I understand that the bending radius is a lot less if the cable is braided or corrugated. 
> 
> 
> Well, the cable I have is neither. The shield is an aluminum "tube" with no corrugation or anything else to aid the bending. The center conductor is a solid copper plated aluminum wire. (No, I am not worried about the center conductor.) 
> 
> 
> Someone warned that a too small bending radius will nick the shield. I am planning to use some type of fixture for the bending in order to avoid any nicking. 
> 
> 
> I do want to now what diameter to use for the fixture. I would like to get/make one with a too small diameter and later have to get something different.
> 
> 
> So, what would I expect for a 1/2 inch solid conductor, solid/stiff shield with noting to aid bending.
> 
> 
> Hans - N2JFS
> 
> 
> 
> -----Original Message-----
> From: Jim Thomson <jim.thom at telus.net>
> To: towertalk <towertalk at contesting.com>
> Sent: Tue, Nov 20, 2012 4:54 am
> Subject: [TowerTalk] hardline bending radius
> 
> 
> Date: Mon, 19 Nov 2012 13:35:01 -0500 (EST)
> From: K7LXC at aol.com
> To: towertalk at contesting.com, jimlux at earthlink.net
> Subject: Re: [TowerTalk] hardline bending radius
> 
>>> I recollect that the minimum bending radius for all coaxes is 6 
> times
>> the diameter. For 1/2" RG-8, that'd be 3 inches.
> 
> 
>> I think that's for coax with braided shield (the RG-8, RG-213) kind.
> 
> It's an Andrew standard for their non-braided coaxes.
> 
> Cheers,
> Steve K7LXC
> TOWER TECH
> 
> ##  as a side note, if RFS brand heliax is used, the turning radius is one heck 
> of a lot less
> than Andrew heliax.  The RFS stuff uses a corrugated cu center conductor as well 
> as the
> either cu or AL  corrugated shield.  Andrew heliax uses a copper tube on it’s  
> 7/8”  heliax...
> and also on its 1.25”  heliax.   The RFS stuff is flexible.   IF you get the 
> version with the
> AL corrugated shield, it’s also very very light.  That AL outer shield version 
> only comes
> in 2 sizes, 7/8”  and also 1.25” .  It’s a lot cheaper than andrew....esp if you 
> get it at Davis RF. 
> And of course, 7-16 Dins are readily available for both sizes.  The RFS stuff is 
> a heck of a lot
> easier to work with. 
> 
> later........ Jim   VE7RF 
> 
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
> 
> 
> 
> 
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk


More information about the TowerTalk mailing list