600 Ohm Open Wire Line
I do not know of a commercial manufacturer. But you can make it your
self at fairly low cost.? I used Copper Coated Steel wire, nominal 22 gauge.
For spacers I use finned tubular electric fence insulators. They are black
plastic, UV Resistant, about six inches long. Buy skinny eight? inch tie wraps.
You need two tie wraps per insulator. Thread two tie wraps through the
hollow center of the tubular insulator. Butt the insulator up against the
wire, pull the pointed end of insulator around a single conductor of copper
coated steel wire. Do the same on the other end of the insulator using
the second conductor of the copper coated steel wire. Pull the tie wraps
taut until the insulator does not slide up of down the wire easily.? Space
the insulators at about eight to ten inches apart. After making the length
I need, I go back and put a dab of RTV on each end of the insulator to
make it more slip resistant on the wire. Allow the RTV to cure overnight.
Note: The RTV you want to use has an alcohol solvent as opposed to
an acetic acid solvent. Acetic acid solvent RTV are usually the exception
today. but they are around and will leach acid for months. Use of the
alcohol solvent RTV will mitigate the corrosive nature of the acetic
acid solvent product.
Note: The finned tubular? electric fence insulators look like the one in
the photo below. They are six inches long and come in packs of
200. Price is $20.00 from Kencove.????
Another manufacturer is Zareba. They are available in 4 inch and six inch
lengths. The loss is on 2 orders of magnitude less than the best coax and
one order of magnitude less than commercial ladder line.
Joshua KJ7LVZ
Tronald Dump