Power Distribution

SCCo ARES/RACES uses Anderson Powerpole connectors for all 12 volt DC power connections in all station types. They are polarized (can’t hook them up backwards) and unisex (no separate “male” and “female” connectors). All stations (including handhelds) must be able to connect to external power with a Powerpole connector.

To connect to vehicle electrical systems and vehicle batteries, stations must have cigarette lighter plugs and vehicle battery clamps as well. Usually this requirement is satisfied with Powerpole adapters.

Most amateur radio equipment requires 12 volt DC power. To connect such equipment to a 120 volt AC power source, such as utility/building power or a generator, use a switching power supply. Make sure the power supply is rated to supply as much current as your station equipment will use.

To plug multiple station components into a single power source, use a power distribution panel. Minimal stations with few components may be able to use a small, passive panel, but larger stations should use a panel with fused outputs.

Stations with both external power and battery backup should consider using an automatic switch. When external power is available, a switch can use it to charge the batteries and run the station. When external power fails, it can ensure uninterrupted operation by switching immediately to running the station from batteries. (This is particularly important for packet stations, where even a momentary power interruption can cause data loss.) Some automatic switches also have provision for charging the battery from solar panels.

Circuit Protection

No matter what power sources you use, always use fused connections to them. Always carry spare fuses, and don’t replace a blown fuse unless you have fixed the problem that caused it to blow.

* Manufacturer, product, and vendor names and images on this page are given as examples and are not endorsed by SCCo ARES/RACES.