[TowerTalk] 75 OHM cable

[Roger (K8RI)]

Steve Katz wrote:
> It's great stuff but requires the use of crimp connectors.  You can't solder to the aluminum braid conductors.
>   
They are easier to use and better any way.  I use all crimp connectors.
> This is the "pole to pole" cable that most cable TV service providers use if they are not using 75 Ohm hardline.
The only messenger supported cable around here is the drop to the house 
although ours is only RG-6 as it comes through conduit from the pole to 
the house and they use 3/4" hard line pole to pole.
>   It's also often used in rural residential drops, where the run is too long for RG6 cables (too lossy).  It's very strong, since it has to support itself on spans of hundreds of feet between poles, even when covered with ice.  It has a messenger cable molded into it, and the coax "hangs" from the messenger; this particular cable has a .109" steel messenger that can support 1800 lbs!
>   
They won't do that kind of drop around here. If it's much over a 100' 
it'll go underground and for cable they'll run up to 500 feet (or more) 
of RG-6. Unfortunately for the longer runs they charge as if it were a 
custom made cable . On a 500' driveway they wanted either $2,000 or 
$3,000 just to put the RG-6 in the dirt.  Basically the charge was 
because they didn't want to do it.
> Nothing wrong with this cable at all, other than it's kind of "stiff" and you need to use crimp connectors.
>
>   
Power handling is probably close to RG-8 but a bit lower loss.  It 
should work well. The size is a bit odd so it becomes difficult to make 
your own connectors where as the 1/2" and 3/4" hard line makes good use 
a plumbing fittings. <:-))

73

Roger (K8RI)
> I've used it plenty of times.
>
> WB2WIK/6
>
>
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com]On Behalf Of Jim Brown
> Sent: Monday, January 05, 2009 3:39 PM
> To: Tower Talk List
> Subject: Re: [TowerTalk] 75 OHM cable
>
>
> What's the shield material?  What frequency? 
>
> Jim K9YC
>
> On Mon, 05 Jan 2009 09:40:21 -0500, Jim Valdes wrote:
>
>   
>> Does anyone know or have some experience with the power handling 
>> capability of TFC-T10 cable manufactured by Times Fiber Communications? 
>> I have a length and was wondering if it would be suitable to run out to 
>> the tower for HF/6m use? I've attached some information, it's the 11 
>> series cable - the center conductor is # 14 and the overall OD on the 
>> jacket is ~ .410 inch.
>>     
>
>   
>> Thanks!!
>> Jim, WA1GPO
>>     
>
>   
>> http://tonercable.net/Files/ProductFiles/76/PDFFile/TFC-T10%20DROP.pdf
>>     
>
>   
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