"jawod" wrote in message
...
I will assume that balanced (air) feedline is homebrew. What
recommendations are there for spacing between the twin lines? Number of
spacers per foot? If homebrew, how to keep spacers from
migrating...will small wire "stays" modify feedline characteristics?


I've heard some use well-varnished dowels as well as pvc pipe, and pieces of
scrap vinyl siding cut to size and drilled for spacers.
and for stays, I've heard epoxy, super-glue, and hot-melt glue works.

If the pieces of vinyl (siding scraps) were folded into a "V", then drilled
for the wire on each side, the springiness of the vinyl would probably hold
itself in place without glue.

spacing of spacers would depend on the stiffness of the wire. Use common
sense - just need to keep a consistent spacing. It would take more spacers
for flexible, stranded wire than for stiff solid wire. 10 guage solid wire
is stiffer than 20 guage braided stranded wire.