The invention is a system operating on a reference frequency. The system comprises
a plurality of at least three nodes. Each node hands off a message received from
another node to a subsequent node. Each of the nodes comprises a transceiver receiving
a message on the reference frequency from another node and transmitting the received
message on the reference frequency to a subsequent node, and a controller controlling
operation of the transceiver to receive the.. message transmitted by another node
and to transmit the received message to a subsequent node.