Another simple way to do this is to buy the Heil FS-1. It comes with two plugs...one goes to the amp and the other to the rig...when you hit the footswitch, it automatically first turns on the amp, then the rig...not elegant, but simple. I also have the Yaesu FRB and it works great..I used it for years to key a 30L-1 with an Icom 735. GL & 73 Tom CX7TT