摘要 |
The method involves communicating between different units which establish a bidirectional connection between them (FM-TX,FM-RX,AM-TX,AM-RX). The connections incorporate a first channel on which a first unit transmits and a second unit receives messages, and a second channel on which a second unit transmits and a first unit receive messages. The first channel (FM-TX) frequency-modulates, and the second channel (AM-TX) amplitude-modulates, with transmission and reception occurring on the common frequency. Transmission and reception occur at the same time on the respective channels. - Modulation insulation between the receiver and the transmitter and the respective insulation between the channels amounts to at least 50 dB. The total duplex insulation amounts to at least 100 dB. The outgoing signal to the antenna from the transmitter and the ingoing signal from the antenna to the receiver are sepd. in a fork function. |