13.8 V DC at up to 12 Amps during transmit.
The IC-901A isn’t the easiest radio to use daily (menu system feels dated), and it lacks modern conveniences like digital modes or wideband receive. But as a , it has character and capability that no current production radio quite replicates. If you find a clean one with a few modules, grab it — just be ready to reflow some solder and hunt down a manual on a dusty PDF archive. icom ic-901a
