TRANSMISSION AND MULTIPLEXING (TM). SUB-STEM 1 DIGITAL RADIO RELAY SYSTEMS (DRRS) OPERATING IN THE 13 GHZ, 15 GHZ AND 18 GHZ FREQUENCY BANDS WITH ABOUT 28 MHZ CO-POLAR AND 14 MHZ CROSS-POLAR CHANNEL SPACING.
传输和多路复用(TM) SUB-STEM 1数字无线电中继系统(DRRS)在13 GHZ、15 GHZ和18 GHZ频段运行 共极信道间隔约为28 MHZ 跨极信道间隔约为14 MHZ