VHF Data Modem/Baseband Data Signal Converter.

Abstract

A full duplex data modem, used for transmitting digital data over tactical VHF FM radios, has been designed and built. The modem has two operating modes. In the quasi-analog mode it can transmit at 75, 150, 300, 600, 1200, 2400, and 4800 bps, using binary FSK, MSK, and four-level FSK. In the X-mode it can transmit at 300, 600, 1200, 2400, 4800, 9600, and 16000 bps, using Manchester, conditioned, diphase, pair-selected ternary, delay modulation, bipolar, and twinned binary codes. This report contains the theory of operation, implementation, and test data on two units. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1978
Accession Number
ADA064377

Entities

People

  • Leonard Ehrman
  • Michael Michalik
  • Paul F. Mahoney
  • Roy Westerberg

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplitude Modulation
  • Audio Amplifiers
  • Bandwidth
  • Coding
  • Converters
  • Decoding
  • Digital Data
  • Filtration
  • Frequency Modulators
  • Frequency Shift
  • Frequency Synthesizers
  • Intersymbol Interference
  • Modulation
  • Modulators
  • Oscillators
  • Signal Generators
  • Waveforms

Readers

  • Radio communications and signal processing.