Hey all glad to be here. My father got me into ham radio but i never really dug my heels in and got into it. I've got a handheld Yaesu at the house i use from time to time to talk to the locals. My father passed away and left me a couple of mobile units and another oddball station. I've got 2 mobile units a Yaesu ft-7800r & ICOM IC-207H and another Yaesu FT-7 old station. So my question is before i even go through the trouble of getting stuff to set these up, and this is a completely noobie question how can i or what can i hook them up to quickly to test the power on/off. A 12v battery?