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YD/T 735-1994 (USD) via email in 1-3 business day ABOLISHED
YD/T 720-1998 Test procedures for telephone sets (USD) via email in 1-3 business day
YD 5054-1998 Standard for Classification of Seismic Protection of Posts and Telecommunications Buildings (USD) via email in 1-3 business day ABOLISHED
YD 2006-1992 (USD) via email in 1-3 business day ABOLISHED
GBJ 47-1983 Acoustics-sound-abserbin coefficient measurement by method of reverbration room (Trial) (USD) via email in 1-3 business day
GB/T 13622-2012 Terminology for radio regulation (USD) via email in 1-5 business day VALID
YD 2010-1993 Engineering Design Code for Pcstal Transportation Station (USD) via email in 1-5 business day ABOLISHED
GB/T 14617.2-1993 Propagation characteristics in land mobile service and fixed service-Part 2: Propagation characteristics for the terrestrial fixed service in 100~1000 MHz via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB 13616-1992 Electromagnetic environment protection requirements for microwave relay stations via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 6113.1-1995 Specifications for radio disturbance and immunity measuring apparatus via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 14856-1993 Interference calculation methods of coast radiotelephone station operating in high frequency bands via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 12046-1989 Designation of radio emissions and determination of necessary bandwidths (USD) via email in 1-3 business day ABOLISHED
YD/T 908-2000 Naming rules for type of optical fibre cables (USD) via email in 1-3 business day ABOLISHED
GB/T 15658-1995 Methods of measurement for urban radio noise via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 13620-1992 Determination of coordination area and predication methods of interference between satellite communication earth station and terrestrial microwave station via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YD 5068-1998 Specifications on Linhtning Protection and Earthing Design for Mobile Communication Base Stations (USD) via email in 1-3 business day ABOLISHED
GB/T 3454-2011 List of definitions for interchange circuits between data terminal equipment(DTE) and data circuit-terminating equipment(DCE) (USD) via email in 1-3 business day VALID
GB/T 14431-1993 Protection ratios and minimum usable field strengths required in the radio services via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 14617.3-1993 Propagation characteristics in land mobile service and fixed service Part 3: Propagation characteristics of line-of-sight radio relay communication systems via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 12322-1990 Methods of reliability testing for universal CCTV systems (USD) via email in 1-3 business day VALID
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