I've run into issues of late with the keyer on the Rockmite inside of Project TouCans rebooting as the output power of the amp was increased via increases in the final transistor's bias current. Simply put, after a certain power level, the keyer would spontaneously reboot when the 'dit' key was pressed. In keeping with our more is less theme, our key is homemade. I wrote an article about it that appeared in Sprat 195 this year! The homebrew nature of the keyer meant there were lots of possible root causes for what I was observing. Here's the radio's view of the mechanical portion of the keyer. The switch on the lower left is the one that was was causing resets. Here's a view of the whole rig, battery (since replaced by a LiFePO4 of the same size), keyer, and Project TouCans mounted in the antenna over the backyard. The key switch that caused resets is mounted on the right hand side of the keyer from this angle. The switch on top is the keyer programming bu...