A receiver module 11 comprises a loop antenna 14 for receiving signals from a digital broadcast network 3. The receiver module 11 may be an integral component of, or attached to, a mobile terminal 1 that comprises a cellular transceiver 8. For example, the receiver module 11 may be incorporated in a battery pack and inserted into a battery compartment of the mobile terminal 1, so that the receiver module 11 and mobile terminal 1 are powered by battery 13. The loop antenna 14 is substantially resistant to electric fields produced by the transceiver 8 and other sources, and may be arranged within the receiver module 11. Where an external loop antenna 41 is provided instead of, or in addition to, loop antenna 14, the receiver module 11 may be arranged to monitor the quality of signals received from the digital broadcast network 3 and alert a user to deploy the external antenna 41 if the signal quality is low or decreasing.