[TowerTalk] hardline bending radius

[K8RI]

On 11/18/2012 6:36 PM, Steve Maki wrote:
> On 11/18/2012 5:22 PM, Jim Lux wrote:
>
>>>>   Does anyone have a good idea of minimum bending radius for  the 1/2
>>>> inch
>>> cable TV hardline? I have been told anything from 5" to 50". I
>>> believe 5"
>>> is way  too sharp but 50"??? I sure that 50" would not cause any
>>> problems
>>> with the cable but ...
>
>>>      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.
>
> Right. Hardline, whether corrugated or smooth wall, is usually specified
> at 10 times diameter = minimum bend radius.

The LMR series is notably less than typical while the UF versions have 
an even shorter minimum bend radius.  I think standard LMR-400 is only 
one inch, non repeatable, but they have the minimum radius, both 
repeatable and non repeatable listed on their site.  Don't depend on my 
memory!

73

Roger (K8RI)


>
> BTW, RG-8 is really 3/8" coax, so if 6xD is the spec, it should be OK
> wound on a 4.5" coil form for example. I would be concerned though about
> foam dielectric RG8 though on that small of a form.
>
> -Steve K8LX
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