TLDR; 0.35A RX (Light on, Squelch off) 1.44A TX @5W FM Mic 1.45A TX @5W FM Heil Headset 0.7A Avg. TX @5W SSB Mic 1.0A Avg. TX @5W SSB Heil Headset 1.3A Avg. TX @5W SSB Mic + DYX-8x7 1.4A Avg. TX @5W SSB Heil Headset + DYX-8x7 817ND Power Draw 0.27A = Squelch on & No light 0.29A = Squelch off & No light 0.32A = Squelch on & Light on 0.35A = Squelch off & Light on + RX Audio signal or not TX FM (w/Light on) 0.83A = TX 0.5W = One bar 0.98A = TX 1.0W = Two bars 1.28A = TX 2.5W = Three bars 1.44A = TX 5.0W = No bars Light = 0.04A Squelch off = 0.03A SSB TX Microphone = 0.7A average +DYX-8X7 = 1.3A average