On 7/11/2015 10:49 AM, Jeff wrote:

Why don't we use the RLR in all these measurements instead of SWR? Isn't
that what we are really after?


A very good question. One possible answer is that RL is normally quoted
in dB, and VSWR linear scales are perhaps easier to envisage.

eg 3:1 ~6dB RL
2:1 ~9.5dB RL
1.5:1 ~14dB RL
1.1:1 ~26dB RL

Personally I find log scales more intuitive for most things as they more
closely relates to factors of significance, no? But I see right away
that RL scales the non-intuitive way, a larger number is a less
significant value. While SWR scales the right way with 1 being no
effect. SWR can also be given in dB which would make the numbers very
intuitive.

--

Rick