digital signal in the demodulator 46 the demodulated signal would then be transmitted to the bit frame synchronizer 47 which formats the serial data stream and thereafter the digital data stream is transmitted to the collar sensor electronics module 34 the digital signal may be a command to poll the sensor 32 in which case the sensor 32 can take a reading and wherein the sensor 32 would collect the data and in turn send the data to the collar sensor electronics module 34 the process of generating a corresponding electromagnetic wave with antenna 42 is the same as previously described referring now to fig2 b a block diagram of the one of the preferred embodiments of the probe electronics including the probe modem means 48 sometimes referred to as a transceiver 48 will now be described the antenna 50 will receive the electromagnetic wave generated from the antenna 42 seen in fig2 a and wherein antenna 50 is a radio frequency transducer similar in construction to antenna 42 returning to fig2 b the antenna 50 is electrically connected to the modem means 48 and wherein the modem means 48 is similar in construction to the previously mentioned modem means 36 the modem means 48.