Methods of measurement for equipment used in terrestrial radio-relay systems - Part 2: Measurements for sub-systems Section Six - Diversity, twin-path and hot stand-by equipment IEC 487-2-6 /  
 IEC 487-2-6 
ISO, IEC. 
 - First edition. 
 - Geneva :   ISO :   IEC,   1984. 
 - 38 stron ;   30 cm.