Why it matters
Average current includes control electronics, relay activity, standby, cold-weather effects, and losses in the supply cable—not just the published idle number.
Put it into practice
Measure the complete duty profile, size wiring for peak tune current, protect the supply, and budget energy for worst-case retuning and temperature.
The common mistake
Sizing the battery from standby current while ignoring repeated tune cycles.
Current channel authorization, waveform specifications, radio and tuner manuals, electrical code, exact antenna configuration, and tested interoperability control. A stored match or automation result does not prove radiated efficiency or network readiness.