Design and construction of a broadband (1MHz) digital HF transceiver for multicarrier and multichannel modulations

This paper describes a broadband (1 MHz) digital HF transceiver for the HF band (3-30 MHz) specifically designed for the transmission and reception of multicarrier and multichannel modulations. The wide modem bandwidth (1 MHz) is not meant for the transmission of a single 1 MHz wide signal, since the goal is to achieve flexible transmission and reception using several channels with a common standard bandwidth.