Catenary wire and coax

It really depends on the type of coax  for instance I had some very thick coax going about 8 feet in the air from my shack to the house wall then clipped to the wall up to the aerial. So can you please say what  type it is for instance that silly thin computer grad  stuff it probably will need support

I think BT drop cables (CW1411?) have steel wires built-in to act as its own catenary - so probably not a good comparison.

  - Andy.

I don't think that ordinary co-ax is meant to be permanently flexing. The more support it gets the longer it will live, especially in windy conditions. T.V. aerial riggers fix the aerial co-ax at regular intervals, and D.I.Y. t.v. aerial co-ax at high altitude blowing about in the wind is likely to break internally and fail.


Z.

This depends on the type of coax- then first is the centre stranded or solid core, and then what the core is - they do make copper clad steel, cored coax for dropping down long unsupported spans. Equally, the aluminium cored stuff seems to be useless and fail randomly even clipped on the flat. Stranded copper core is pretty good. (20yr life flapping about up a tree.)

What type of coax is, it, how much RF power are you moving, and what is the cost of a line failure, and how long does it have  to last ?

Thanks for all your replies. It's cheapo coax from my store - it's for me after all! The cost of failure is insignificant, I'll just replace it. Catenary it is then. Whilst asking dumb questions, is there a visually more appealing way of tying a cable to a catenary other than cable ties?

Self amalgamating tape


Regards


BOD

Grumpy could you tell us what the coax is for its TV VHF radio or what? Go on tell us PLEASE??

Yo Kelly,  it's really quite boring. I built a double garage man cave with attic trusses so I had a big store room for all my kit. I put in a WC for man cave convenience. SWMBO decreed that store room would be a useful triple bedroom when (her) family came for Christmas. Then a shower would be useful. Cue dig up drive, replace 4mm SWA with 16mm, new white box in house wall, new CU in garage. Re- locate garage CU. Create shower room. Next idea Air BnB (we're well placed for RIAT). Cue tosh up all my rough carpentry, hours of painting, and, carpet. RIAT just finished. Guest would have liked TV, chromecast apparantly not cutting it. Hence aerial required. I have one spare slot in the 8 way amp in the loft in the house so I thought I'd just sling a cable over. Glad you asked? Watch this space, kitchen facilities and somewhere to put a dog will make the place much more appealing . . .

Oh wow that's a lot of work you've done  at least now I know lol. Make sure you use proper low loss coax  preferably double screened to avoide interference problems. I bet your glad your a sparky think of the cost if you had to get someone in