GY/T 196-2003 调频广播覆盖网技术规定.pdf

GY GY/T196-2003 Technicalspecificationsfor coverage networks ofFM sound broadcasting 2003-10-29 2003-12-01
GY/T196-2003 1991 ITU-R P.370-71TU-R BS.412-9
GY/T 196-2003 VHF GB/T 4311-2000 GB 6364-1986 GB/T 7400.1 GB/T 7400.2 GB/T 14433-1993 GJB 2081-1994 87MHz 108MHz 108MHz 137MHz GJBz 20093-1992 VHF/UHF ITU-R BS.412-9 VHF ITU-R BS.704 ITU-R 1S.1009 87MHz 108MHZ 108MHz 137MHz ITU-R P.370-7 30MHz 1000MHz VHF/UHF 3.1 service field strength E5050 50% 3.2 normalized service field strength E:5050 1kw 3.3 interfering field strength E50T
GY/T196-2003 T %0S F 10% 3.4 normalized interfering field strength E50 T 1kw T %OS T 10% 3.5 minimum usable field strength Er 3.6 usable field strength E 3.7 nominal usable field strength Ea 3.8 nuisance field dB 3.9 field strength for rebroadcasting 3.10 effective neight of the transmitting antenna h 3km15km hs 3.10.1 height of transmitting antenna h. 3.10.2 relative height of transmitting antenna field hc 3km15km 3.11 degree of terrain irregularity
GY/T 196-2003 10km50km 4km 36km 3.12 effective radiated power dB 1 P=PG-L 3.13 R.F.protection ratio dB GB 7400.1GB 7400.2 m kn 2 E 1μ V/mdB E dBμ V/m 20lgE μ V/m P 1kw dB PdBK 10lgP k h 10m 4 4.1 87.0MHz 108.0MHz 4.2 100kHz 100kHz 200kHz ±75kHz 业标准信息服务 10.7MHz 4.3 ITU-R BS.412-9 1 54dBu V/m66dBu V/m 4.4 4.5 40dB 4.6 ITU-R P.3707 ITU-R P.370-7 GB/T 14433-1993 5.2.3