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National Association of Broadcasters Engineering Handbook, 11th Edition by Garrison C. Cavell

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Chapter10.7

TV Transmission Line and Antenna System Measurements

Todd R. Loney

Electron Dynamics, Inc.

Galiano Island, BC

Stephen N. Heazlewood

Broadcast Australia—BAI Communications

Melbourne

Introduction

Lord Kelvin succinctly stated, “To measure is to know” … of course, he also posited that “Radio has no future.” Fortunately for our industry, the latter proved incorrect.

The purpose of a broadcast transmission system is to deliver radio frequency (RF) energy as efficiently as possible from the transmitter to the antenna with minimal spectral distortion of the transmission envelope. Proper testing helps to ensure good system integration and optimal performance. Rigorous testing methods allow for the comparison of results between systems or ...

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