Jay, Here on some of the towers that hold repeaters, cel phone sites, FM broadcast all with helix they use the proper clamp at 5 ft or less intervals. See some at about 5" helix, but most either 7/8 or 1-5/8.
I have also seen 1ft pieces of #14 house wire cut to 1 ft lengths used with success, but have to make sure properly route arround tower leg flanges or movement, and there is suppose to be some movement, will eventually ware into feedline jacket. Prefer the clamps, but at $3 each the wire looked good and did work or now since 1998. 73, ron, n9ee/r In Repeater-Builder@yahoogroups.com, Jay Urish <[EMAIL PROTECTED]> wrote: > > 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 >
