Jay, My local tower guy told me 5 foot max between supports. If the coax moves in big winds, it'll make noise. I'd avoid the EMT clamps. Use real coax stainless clamps. the EMT clamps hold the coax against the 2 rails of the uni-strut. Those 2 edges are a little sharp if you get the clamps too tight and will distort the feedline.
Gerald Pelnar WD0FYF McPherson, Ks > Hi Folks, > This weekend I will be un jury rigging a lame feed line install at my > repeater site. The tower is a 300' four sided guyed monster. > > I am planning on using uni-strut on the side facing the building and > using butterfly clamps or EMT clamps to hold my feed line. I am open to > suggestions on the vertical spacing of my unistrut brackets. At what > interval should 1/2 - 7/8 and 1-1/4 heliax be secured? > > Any suggestions? > -- > Jay Urish W5GM > ARRL Life Member Denton County ARRL VEC > N5ERS VP/Trustee > > Monitoring 444.850 PL-88.5 >
