13-centimeter band

The license privileges of amateur radio operators include the use of frequencies and a wide variety of modes within these ranges for telecommunication.

The ISM band is also used by unlicensed devices, such as Wi-Fi and Bluetooth, which must not cause interference to amateur stations.

The band is allocated on a shared basis with other services, and U.S. Federal Communications Commission (FCC) Rules specify that amateurs may not cause interference to and must accept interference from other services authorized by other nations, and by radio-location, fixed, and mobile stations (except aeronautical) authorized by the FCC.

[7] As in the rest of the world, US stations in the amateur service are not protected from interference caused by industrial, scientific, and medical equipment.

The bandplan published by the American Radio Relay League recommends frequencies based on intended activity in the band.