GOST R 56172-2014 Radio stations and repeaters of DMR standard Basic parameters Technical requirements《DMR标准的无线电台和中继器 基本参数 技术要求》.pdf

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4、 ETSI EN 300 113-1 V1.7.1 (2011-11) Electromagnetic compatibility and Radio spectrum Matters (ERM); Land mobile service; Radio equipment intended for the transmission of data (and/or speech) using constant or non-constant envelope modulation and having an antenna connector; Part 1: Technical charact

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8、R (Bit Error Ratio) ; DMR (Digital Mobile Radio) ; EN (European Norm) ; ETSI (European Telecommunications Standards Institute) - ; TDMA (Time Division Multiple Access) -; TS (Technical Specification) ; 4FSK (4 Frequency Shift Keying) . 561722014 3 4 4.1 (), () DMR - , , - . () -, () . , . () , -. DM

9、R 4.1. 4.1 DMR . - , ( ). 4.2. 4.2 , ( -, ). - 4.3. 561722014 4 4.3 4.2 DMR DMR , 4.1. 4.1 , 160 146 174 146 174 330 336 344* 300 308* 300 308* 336 344* 450 401 470, 470 486* 401 470, 470 486* * . * . * . . 4FSK (4 Frequency Shift Keying) 1. TDMA (Time Division Multiple Access) 1. 12,5 1. 5 5.1 5.1.1 - , 5.1. 5.1 ( ), 160 40 330 60 450 60 561722014 5 : / 1,5 (. 1) 2; 3/ 2 (. 2) 2. 1 , : 15 35 ; 45 % 75 %; 650 800 . .; . 2 () () . 5.1.2 , 5.2 1. 5.2 , 160 330 450 210-610-610-65.1.3 - , 60 0,2 ( 37 ) 2. 5.1.4 , , 9 4 ( , 470 ) - 9 12,75 ( , 470 ), - , , 5.3 ETSI 2. 5.3