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Power Vacuum Tubes Handbook, 3rd Edition by Jerry Whitaker

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11Device Performance Criteria

11.1 Introduction

Many shortcomings in the received audio, video, and/or data stream of a transmission resulting from noise, reflections, and terrain limitations cannot be controlled by the equipment design engineer or the operating maintenance engineer. However, other problems can be prevented through proper application of vacuum tube devices and proper equipment adjustment. The critical performance parameters for a transmission system include

  • Output power

  • Transmission line/antenna voltage standing wave ratio (VSWR)

  • Frequency stability/accuracy

  • Occupied bandwidth

  • Distortion mechanisms, including total harmonic distortion (THD), intercarrier phase distortion, and quadrature distortion

  • Differential phase and ...

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