Location signalling device for automatically placing a radio distress call

A location signalling device for use in combination with a coordinate location data generating unit and a radio transmitter having a transmitter input, comprising:

• a device input/output port for communicating with the coordinate location data generating unit and entering location data provided from the coordinate location data generating unit into the location signalling device;
• a memory for storing the entered coordinate location data;
• a timer/clock having periodic time setting means for setting predetermined periodic time intervals for entering coordinate location data;
• a device controller coupled to said device input/output port, said timer/clock, and said memory, including a microprocessor having programmed location data updating means for automatically communicating with the coordinate location at a generating unit to provide current coordinate location data at the predetermined periodic time intervals set by said timer/clock and storing current location data entries in said memory in order as to time of entry;
• a device output including an output terminal connected to the transmitter input of the radio transmitter for automatically retrieving a most current entry of the location data stored in memory and sending said most current location data to the input of the radio transmitter in response to a distress activation signal;
• and
• activation means for providing the activation signal to said device output means in response to an actuating action by a user when a distress call is to be sent.