The MC04-PLC digital HF communication system is designed to organise telemechanics channels (TM), data transmission (DD) and telephone channels (TF) over high-voltage power lines (PL) of the 35/110 kV distribution network. The equipment provides data transmission via high-frequency (HF) communication channel in the band 4/8/12 kHz in the frequency range of 16-1000 kHz.
Connection to the power line is made according to the scheme phase - ground through the coupling capacitor and the coupling filter. Connection of the RF end of the equipment to the coupling filter is asymmetrical and is performed with one coaxial cable.
The equipment is manufactured with separated and adjacent arrangement of bandwidths of the receiving and transmitting directions.
Functional capabilities: the number of HF channels 4 kHz wide - up to 3; channel mode: analogue (frequency division) and digital (time division); modulation of the low-frequency digital stream - OFDM; modulation of the HF spectrum - amplitude with the transmission of one sideband AM OTP; adaptation.
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