> I've also observed that the VSWR (and therefore the impedance) on a 100
> foot length of 9913 wasn't constant, and from my recollection, had bumps
> in the region of 135 MHZ. I have not seen this problem on the LMR400 (even
> up through 1 gHz!) so I immediately switched to the later and have never
> been sorry. From these data and the cost for semiflexible coax, I'd opt for
> the LMR400!
I believe the impedance inconsistency is attributed to the 9913's weak spiral
dielectric. The center conductor has a tendency to
move from center, particularity when making bends.
-Paul, W9AC
AN Wireless Self Supporting Towers are now available! Windloading tables,
foundation diagrams and charts, along with full details are now at the
AN Wireless Web site: http://www.ANWireless.com
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