CONTENTS

Policy on Intellectual Property Right (IPR)
�1���� Introduction
�2���� Related ITU-R Recommendations
�3���� Abbreviations
�4���� General
�5���� Transmission modes in the range 415-526.5 kHz
������� 5.1���� Morse code
������� 5.2���� Narrow-band direct printing radiotelegraphy
������� 5.3���� Narrow-band phase shift keying modes
������� 5.4���� MFSK and FDM modes
�6���� Characteristics of radiated signal
������� 6.1���� Overview
������� 6.2���� Summary
������� 6.3���� Conclusions
������� 6.4���� Receive antenna design
�7���� Reference material
A1���� General
A2���� Examples of electrically small transmit antennas suitable for limited space
������ A2.1���� Short vertical antenna
������ A2.2���� Electrically small inverted L antenna
A3���� Examples of moderate-sized antennas suitable for locations with increased space availability
������ A3.1���� Inverted L using 30 m radials
������ A3.2���� Inverted L using 15.24 m radials