On Thu, 11 Feb 2010 08:24:10 -0800 (PST), phaedrus
wrote:

Just don't want a
cable that will change its Zo every time it gets a bit bent!

Your goals are at cross purposes. If the line is flexible, it is more
likely to change Zo than not.

Your analyzer should have a self-calibration feature (and you are
probably lacking the calibrated open, load, and short if you are
lacking the original leads). This will satisfy any arrangement of
leads once they have been laid out such that you don't have to move
them again. That in its own right should solve your variable Zo
(which is an unlikely problem).

73's
Richard Clark, KB7QHC