Abstract: A method (200) and apparatus (100)is provided for a radio having adjustable operating parameters to adjust at least one such adjustable operating parameter based on the current location of the radio. Operating parameters which may be so adjusted include, but are not limited to, the following: transmitting power, operating channel, operating band, modulation type, modulation index, frequency deviation, squelch setting, channel spacing, control channel (for trunked communications), noise blanker characteristic, and receive bandwidth. In another embodiment, transmissions by the radio can be inhibited as a function of the location when it is determined that the location is within a hazard area.

Abstract: A trunked communication system that supports polling requests for location information without requiring infrastructure changes. Ordinary private call talk requests are altered to include at least two inclusions of the ID code for the target communication unit. This dual representation of the ID is interpreted by the receiving unit as a poll request, to which the unit responds by providing location information on an allocated communication resource.

Abstract: Disclosed is a method and apparatus for reducing radiated interference from a light source wherein a filter device is coupled across the light source after a predetermined time has expired from the starting of the light source. In this way, the filter does not interfere with the starting of the light source, however, after being coupled, the filter prevents radio frequency interference generated by the light source from radiating from the light source and associated wiring and interferring with nearby radio receiving equipment.