CONTENTS

Policy on Intellectual Property Right (IPR)
 1     Introduction
 2     Gaussian scatter model
 3     Specular modes
 4     Models for HF channels with more than 12 kHz bandwidth
 1     Introduction
 2     Modem characterization technique
 1     Representative channel parameter combinations
 2     Low latitudes
        2.1     Quiet conditions
        2.2     Moderate conditions (see Note 1)
        2.3     Disturbed conditions
 3     Mid-latitudes
        3.1     Quiet conditions (see Note 1)
        3.2     Moderate conditions (see Note 1)
        3.3     Disturbed conditions (see Note 1 of § 2.2)
        3.4     Disturbed near vertical incidence (ground wave component should be added if required)
 4     High latitudes
        4.1     Quiet conditions (see Note 1 of § 3.2)
        4.2     Moderate conditions
        4.3     Disturbed conditions
 5     Occurrence statistics
        5.1     Low latitudes
        5.2     High latitudes
 6     Length of test