Located in the Sierra Nevada Mountains at 2500 feet, the club repeaters cover the Southern Sacramento and Northern San Joaquin Valleys. The call-sign is W6SF and can be heard on 147.165 MHz and on 442.250 MHz with a PL of 107.2 Hz. Club simplex frequency is 147.51 MHz.
SDARC has recently launched a new UHF repeater, operating independently, on 444.575+ PL 107.2. This is a local low level Stockton repeater named W6SF. NARCC status is co-ordinated. As the project progresses, three receiver/voters will be installed via T1 phone lines. All components are 100% Motorola.