[Amps] High SWR

[Jim Brown]

On Thu, 23 Apr 2009 09:18:53 -0400, Carl wrote:

>The original WW2 era RG-8 was built to meet a military spec 

And it's been nearly that long since RG-numbers defined anything  
more than Zo and approximate dimensions. There are about 50 RG59s 
and a dozen RG8s in the Belden book. A 40-year old Belden catalog in 
my files had about half that number. 

In the real world, RG8 means "50 ohm coax that's approximately 0.4 
inch o.d.." If you assign more specs to it than that, you've slept 
through the last 50 years. Variations come in the form of specs for 
loss vs frequency, composition of jacket, shield, dielectric, and 
center conductor, and the ability to withstand various environmental 
applications.  In the olden days, coax was used mostly for low power 
radio. Over the last 60 years, uses have included baseband video, 
data, MATV, CATV, and radio. 

73,

Jim Brown K9YC