Topband: Reducing Noise in the Shack

[Tom W8JI]

White papers:


http://docs.commscope.com/Public/Coax101.pdf

Although the test frequency and method is not described, this shows the 
difference between Quad shield and single foil and braid is 7 dB before 
10,000 flexes and 13 dB after 10,000 flexes.

My measurements of F11 are at:

http://www.w8ji.com/coaxial_cable_leakage.htm

Those measurements were made in 2007, and repeated in 2011 with no definate 
change in results. That cable has crimped connectors.

Another white paper, which bears out measurements:

http://www.westpenn-wpw.com/pdfs/coax_construction.pdf

73 Tom