IEC 60244-14 : 1.0

IEC 60244-14 : 1.0

METHODS OF MEASUREMENT FOR RADIO TRANSMITTERS - EXTERNAL INTERMODULATION PRODUCTS CAUSED BY TWO OR MORE TRANSMITTERS USING THE SAME OR ADJACENT ANTENNAS

International Electrotechnical Committee

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Table of Contents

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 General measuring procedure
    4.1 Introduction
    4.2 Measurements in transmitter feeders
    4.3 Precautions to be observed when making measurements
    4.4 Off-air measurements
    4.5 Special precautions to be observed when
          making off-air measurements
5 Methods of measurement for specific transmitter service
    or configuration
    5.1 Measurements for VHF radio transmitters
    5.2 Measurements for adjacent antennas
    5.3 Measurements for a common antenna
6 Presentation of the results
Figures
1 Measurements in transmitter feeders
2 Off-air measurements
3 General arrangement for transmitters feeding separate
    antennas
4 General arrangement for transmitters feeding a single
    antenna
5 Alternative arrangement for transmitters feeding a
    single antenna
6 Typical HF station configurations
Annexes
A Theoretical notes
B Calculation of radiated levels of intermodulation
    products (q = 1)
C Maximum permitted power level of spurious emissions

Abstract

Gives a method of measuring external intermodulation products caused by two or more transmitters with identical or adjacent antennas. Recommends method for assessment of the performance of radio broadcast transmitters.

General Product Information

Document Type Standard
Status Current
Publisher International Electrotechnical Committee
Committee TC 103

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