Comparison of AM and Narrow-Band FM UHF Communication Systems - Final Summary Report and Appendix A

Abstract

The performance of two equivalent uhf voice communications systems, one amplitude-modulated and the other narrow-band frequency-modulated, is presented in comparative form. The carrier frequency for these studies was 328.2 Mc and the deviation for the FM case was +-7 kc. A ratio-type FM detector was used in the FM receivers. One- and two-signal conditions were set up and investigated in the laboratory and field. Output signal-to-noise ratio was used as the quantitative measure of system performance, along with qualitative evaluations based on listening tests.

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Document Details

Document Type
Technical Report
Publication Date
Jun 12, 1952
Accession Number
AD1207270

Entities

People

  • E. Toth
  • J. D. Wallace

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Amplifiers
  • Bandwidth
  • Carrier Frequencies
  • Communication Channels
  • Communication Systems
  • Cross Modulation
  • Detection
  • Detectors
  • Frequency
  • Frequency Response
  • Measurement
  • Military Research
  • Modulation
  • Modulators
  • Navy
  • Radio Frequency
  • Repetition Rate
  • Signal Generators
  • Test And Evaluation
  • Transmitters

Readers

  • Acoustics.
  • Radar Systems Engineering.
  • Technical Research and Report Writing.