- The Astron SS-18 power supply has the function of converting and supplying power to station radios, desktop radios (operators) or old generation signal repeaters.

- Radio power supplies are usually converted from AC 220V to DC with a current supply from 15A to 40A, so depending on the transmitter capacity of the device used, we need to choose the power source with the appropriate current supply.

- Some radio power supplies also provide a 10A charging current for the battery, this is a backup source for the device to operate when there is a power outage (loss of AC power).