On Jul 22, 10:41 am, K7ITM wrote:
....
wanted to get rid of, I'd put zeros on them. Coaxial cavities are
nice if you need very high Q around 100MHz, but stubs of even half-
inch coax are not particularly high Q--expect Qu about 400 at 70MHz.
....
I gave the Qu about 400 number based on 1/2" ID of the outer
conductor, but I guess 1/2" CellFlex is actually about 0.33" ID of the
outer. Based on that, or based on the listed attenuation specs for
the line in this frequency range, I'd have to revise my Qu estimate
down to no more than 300.

Cheers,
Tom