Abstract: A mobile multifrequency transmitter includes a self-locator, a frequency selector, and a communication unit. The self-locator is configured to determine a current self location without transmitting an outgoing signal, and to provide the self location to the multifrequency transmitter. The frequency selector is configured to select a usable frequency based on the current self location. The communication unit is configured to transmit on said selected usable frequency. A mobile communication method includes the steps of obtaining a current self location from a self-locator without transmitting an outgoing signal, looking up in a database an allowable frequency band corresponding to the current self location, and transmitting on the allowable frequency band. Thus, the mobile multi-frequency transmitter is capable of handling an automatic frequency switchover without the need for higher level cellular direction.