The phase shift due to the 24 inch coax cables are factored into the
Network Analyzer for all frequencies and so any different lengths will cause
the correction factor which is built into the analyzer to be wrong and that
will make the reading displayed on the screen to be in error.

The phase velocity for most coax cables are similar, so I'd use RG-8 since
that accepts type N connectors reasonably well. The impedance bump caused
by a thinner cable being adapted to type N cables would be noticeable
especially at higher frequencies.

The only major question is whether the original cables had a different
velocity factor, and that I can't answer so I'd use the RG-8 and it should
be close enough.



Jim Pennell
N6BIU


--

11:50 Pacific Time Zone
Dec 3 2005

International Time
19:50 UTC
03.12.2005