Re: Sizes of coax cable

Posted by: “bill maclane” billmaclane@yahoo.com billmaclane

Sat May 16, 2009 4:14 pm (PDT)

Depending….at one time most all CATV installations were with RG-59 which is 75 ohms.
Newer CATV installations generally use RG6 or RG6X because it has better sheilding (quad on the X) and is more suited for HDTV.  It is also 75 ohms.

Radios are designed for 50 Ohm.  The mismatch will cause some loss, but I’d use LMR400 or RG-213, Belden 9913 or 9914 or the flex versions.  I use more RG213 than anything since it has low loss and is cheaper and easier to use than the 9913.

73,
Bill
AI4WM