Topband: Fsj4 series heliax around a rotor

[Mike Waters]

That's what I was thinking all along. If you put enough large loops in it,
you could even get away with using 3/4" aluminum hardline. :-)  Of course,
that doesn't mean it should be done.

73, Mike
www.w0btu.com


On Sun, Jun 8, 2014 at 2:44 PM, Mike/W5JR <w5jr.lists at att.net> wrote:

> One option is to do what remote ENG trucks do and make at least a 540 deg
> or 720 deg (1.5 or 2.0 or more) loops rather than a 180 or 360. This will
> reduce some of the flexing action as it is more like changing the coil size
> instead of a lot of bending back and forth.
>
> You do need to be careful in prepping the ends for connectors. It is very
> easy to score the thin copper shield and it will fracture easily if scored.
> I recommend using some of the heat shrink with the glue inside on the back
> of the connector shell and down the cable three or four inches to act as a
> strain relief.
>