An ultra-wide band (UWB) radio frequency (RF) receiving device (205)
includes a first receiver (305) that receives UWB RF signals, a second
receiver (315) that receives an external cue, and a processing unit
(330). The second receiver (315) receives an external cue that includes
one of a television blanking signal, a zero-crossing of a FM radio
transmission, a paging system signal, a zero-crossing of an analog voice
transmission, a zero-crossing of an analog video transmission, a cellular
telephony control channel signal, a cellular telephony traffic channel
signal, a digital sub-band for an AM or FM radio station signal, a
digital or analog signal in a short-wave-radio transmission, a digital
television signal, a digital or analog signal in a land mobile radio
transmission, a radio-navigation signal, a radar signal, a satellite
signal, an acoustic event or signal, a magnetic event or signal, or an
optical event or signal. The processing unit (330) synchronizes an
internal clock of the UWB RF receiving device (205) to the external cue.