T4A01 - What must be considered to determine the minimum current capacity needed for a transceiver's power supply?

Question

A: Efficiency of the transmitter at full power output
B: Receiver and control circuit power
C: Power supply regulation and heat dissipation
D: All of these choices are correct

Answer 1

Usually, one would simply go with the fuse or nameplate current rating of the radio.  All of these things affect it if you're designing a power supply, but that's a pretty complex task (especially these days, with coils so out of favour in general) and is perhaps more suited to element 4.  At this level I'd be expecting people to be able to match current and understand how to supply enough of it, and what happens if you don't, but I care more about wire gauge than about this for element 2.