CONTENTS

1     Introduction    
 2     Inputs to the basic reliability computation         
 3     Computation of basic circuit reliability (BCR)  
 4     Basic reception reliability (BRR)           
 5     Basic service reliability (BSR)   
 6     Computation of overall circuit, reception and service reliability           
 7     Reliability estimation in HF networks   
        7.1     Basic path reliability (BPR)         
        7.2     Basic communications reliability (R)       
 8     Computation of compatibility    
 9     BCR for digital modulation systems     
Appendix  1     
 1     Terms relevant to the operation and design of HF radio systems         
 2     Terms relevant to prediction techniques