My homebrew Field Day rig monitors only the "forward power" with a
single directional coupler and adjusts the output level to keep the
"forward power" constant. That rig delivers 83% of the power into a
2.38:1 SWR load as it does into a 1:1 SWR. This represents a 0.8 dB
power reduction. Big deal.

But my 25 year old Icom 730 delivers a full 100 watts to the output
regardless of the SWR up until it starts shutting down at around 3:1.
For example, with a 2.38:1 SWR, the "forward power" is 120 watts and the
"reverse power" is 20 watts. Aren't modern rigs able to do this, or have
they gone to the simpler system like I use in my homebrew rig?

Roy Lewallen, W7EL