As a hobbyist, you no longer need to push 3 A through tiny MicroUSB connectors and underspecced cables to power a current-hungry Pi 4. Today, all you need is a USB-C socket with two resistors ...
But the radio in question needs 12 volts, so the key was to find a USB-C cable with ... off his radio’s power supply and spliced in some Anderson power pole connectors so he could use either ...