A compact portable HF terminal

The paper describes the design philosophy and implementation of a compact, high-performance HF (2-30 MHz) long-range radio system. The system is automatic and can adapt to changes in the propagation and co-channel interference environment. In the design, extensive use is made of advanced real-time DSP algorithms and technology; this allows relatively simple RF equipment to be exploited, which leads to an economic system implementation. The system is readily transportable in a suitcase-sized container