Coiling coax

i've got a rfi cd5000 and it uses cellfoam low loss rg58 coax.
from what i can ascertain 2m of this will have ~0.5db of loss at 470MHz. pretty much a non event.
if you wanted to do anything at all maybe shorten it. but if you don't have the skills and equipment then coiling it won't make any difference.
from an electrical point of view, the frequencies and power involved i can;t see why any concern about coiling it.
i wouldn't worry about it. just coil it up out of the way. just don't crush it or damage it by winding it into to small a coil. probably 100mm diameter would be ok.

Coiling makes no difference provided you don't put sharp bends in it , 100mm radius as greybeard says is ok.

Those comments come from thats its possible to have a badly matched antenna and if this is the case then excessive electrical signals can travel on the outside of the coax instead of the inside.

If a lot of signal travels on the outside it can affect or induce signal into the other loops and under extreme circumstances might cause a radio to oscillate.

But as said , basically a myth.

What he said. You won't have a problem at the relatively low frequencies and power of a CB radio.