On Wed, 03 Feb 2010 11:41:18 -0500, Michael Coslo
wrote:

I've been told that braid makes a great deal of difference to common mode
noise pickup, and that while a thin foil and loose braid is fine at UHF it's
not to be expected to do the same for HF.

Are their any good references with test numbers on this? Been googling a
bit, haven't found anything definitive yet

Hi Mike,

With the CM performance being tied to foil application, such a
non-starter is bound to have only the whisp of academic research into
it if you expect to find test numbers. On the other hand, there's
sure to be a forest fire of testimonials.

To help in your search, try googling "cable transfer impedance." The
first page of responses should have a wealth of information.

73's
Richard Clark, KB7QHC