System for location reporting

A method of adapting a transmitter having a microphone and capable of transmitting information on a voice channel to transmit the position of the transmitter without modification thereof, comprising the steps of:

• determining the location of the transmitter;
• converting the determined location to a acoustic signal;
• and,
• coupling the acoustic signal to the microphone via an acoustic coupler, whereby the transmitter can be adapted to provide position reporting without any change thereto.

A method of adapting a transmitter having a case and a microphone and capable of transmitting information on a voice channel to transmit the position of the transmitter without modification thereof, comprising the steps of:

• determining the location of the transmitter using a geoposition determining unit which provides a determined location signal as an output;
• converting the determined location signal to an acoustic signal without human intervention;
• and,
• coupling the acoustic signal with an acoustic coupling device to the microphone of the transmitter from a position outside the case of the transmitter, whereby the transmitter can be adapted to provide position reporting without any change thereto from a position outside the case of the transmitter.