Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
Position: Search valid to be valid superseded to be superseded abolished to be abolished
Standard No. Title Price(USD) Delivery Status Add to Cart
GB 12638-1990 Safety requirements of radiation for microwave and ultrashort wave communication equipment 294.0 via email in 1~3 business day valid
GB 14391-1993 Performance requirement for satellite emergency position indicating radio beacon 100.0 via email in 1~3 business day abolished
GB 14391-2009 requirements for satellite emergency position - Indicating radio beacons 180.0 via email in 1~3 business day superseded
GB 14391-2021 Performance requirements for satellite emergency position indicating radio beacons 285.0 via email in 1~3 business day valid
GB 9404-1988 Technical specifications for 4GHz feeder systems 75.0 via email in 1~3 business day valid
GB 9405.1-1988 General specification for electrodynamic cone loudspeaker of direct radiator type 180.0 via email in 1~3 business day valid
GB/T 12640-1990 Methods of measurement for the digital microwave radio relay communication equipments 450.0 via email in 1~3 business day valid
GB/T 13159-1991 Networking specifications for digital radio-relay sy-stems 250.0 via email in 1~3 business day abolished
GB/T 13159-2008 Networking specifications for digital radio systems 300.0 via email in 1~5 business day valid
GB/T 13503-1992 Generic specification for digital microwave radio relay communication equipment 240.0 via email in 1~3 business day valid
GB/T 13856-1992 for 4GHz band microwave service channel equipment 150.0 via email in 1~3 business day abolished
GB/T 13857-1992 for microwave communication system remote supervisory and control equipment 120.0 via email in 1~3 business day abolished
GB/T 13858.1-1992 for colour TV modulation and demodulation equipment(1TV+4 sound program)used in middle distance terrestrial analog radio - Relay systems 210.0 via email in 1~3 business day abolished
GB/T 13858.2-1992 Specification for 300 telephone channels modulation and demodulation equipment used in middle distance terrestrial analog radio-relay systems 120.0 via email in 1~3 business day abolished
GB/T 15841-1995 ~ 150.0 via email in 1~3 business day valid
GB/T 16650-1996 General specification for microwave communication systems with TDM/FDMA point-to-multipoint 160.0 via email in 1~3 business day valid
GB/T 29239-2012 Energy efficiency metrics and measurement method for mobile communication equipment—Base station 360.0 via email in 1~5 business day superseded
GB/T 29239-2020 Energy efficiency metrics and measurement method for mobile communication equipment—Base station 375.0 via email in 1~5 business day valid
GB/T 4958.10-1988 Methods of measurement for equipment used in terrestrial radio-relay systems-Part 3:Simulated systems-Section One General 224.0 via email in 1~3 business day abolished
GB/T 4958.11-1988 Methods of measurement for equipment used in terestrial radio-relay systems-Part 3:Simulated systems-Section Three Measurements for monochrome and colour television transmission 360.0 via email in 1~3 business day abolished


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