Systems and methods for performing automatic frequency control are provided. Instead of relying on individual frequency tuners for each channel of a multi-channel receiver system, the present subject matter uses a single frequency tuner for receiving each channel of the multi-channel receiver system. A locked demodulator may be designated as a reference demodulator and frequency offset values associated with the reference demodulator may be applied to other demodulators of the multi-channel receiver. These frequency offset values may be used by individual demodulators of each channel for correcting corresponding frequency offsets.

A wrist-worn electronic device comprises a housing, a first antenna, a second antenna, and an electrical switch. The housing includes a circumferential side wall, an electrically conductive bezel, a bezel retainer, a lower ring and an electrically conductive bottom plate. The first antenna is formed in part by a portion of the bezel and receives a first wireless signal having a first frequency in a global navigation satellite system (GNSS) band. The second antenna is formed in part by at least a portion of the bottom plate and transmits a second wireless signal to a non-terrestrial network (NTN), receives a third wireless signal from the NTN, or both. The electrical switch having a plurality of selectable positions each associated with a tuning network that causes the second antenna to transmit the second wireless signal at a second frequency and to receive the third wireless signal at a third frequency.