Telegraph and Data Transmission Over Shortwave Radio Links: Fundamental Principles and Networks |
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Common terms and phrases
5-unit code 50 bauds Amplitude modulation antenna ARQ system ARQ terminal automatic bandwidth bauds bit error rate Block diagram carrier character error rate characteristic instant code combinations coder connection data transmission decoder demodulator diversity method diversity reception employed encryption error bursts error detection fading falsified forward error correction frequency modulation frequency shift frequency-shift keying index of co-operation individual distortion interference isochronous distortion message transmission Mod RT modulation rate noise nominal instant output circuit phase picture frequency propagation protection methods pulse transition radio circuits receive branch receiving end receiving station repetition cycle repetition request RT RR Seiten selection shift register shortwave links shortwave radio links shortwave range shown in Fig signal element distortion signal-to-noise ratio stop polarity subscriber synchronous telegraph and data telegraph speed teleprinter telex terminal equipment traffic transmission channel transmission circuits transmission path transmit branch types of transmission voice-frequency telegraph WTK channel