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GB 11411-1989
Technical specifications and operational requirements for the systems for promulgation of navigational and meteorological warnings and urgent information
GB/T 11468-1989
265 Radio altimeter
GB/T 11299.9-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 2:Measurements for sub-systems--Section seven:Frequency demodulators--Section eight:Frequency demodulators
GB/T 11299.8-1989
Methods of measuremant for radio equipment used in satellite earth stations--Part 2:Measurements for sub-systems--Section four:Up and down converters
GB/T 11299.7-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 2:Sub-systems measurements--Section three:Low noise amplifier
GB/T 11299.5-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 1:Measurements common to sub-systems and combinationsof sub-systems--Section five:Noise temperature measurements
GB/T 11299.15-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 3:Methods of measurement for combinations of sub-systems--Section five:Antenna tracking and control
GB/T 11299.14-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 3:Methods of measurements for combination of sub-systems--Section four:Measurement for monochrome and colour television transmission
GB/T 11299.13-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 3:Methods of measurements for combinations of sub-systems--Section three:Measurements for F.D.M. transmission
GB/T 11299.10-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 2:Measurements for sub-systems--Section ten:High-power amplifier
GB/T 1782-1989
Hub and reol spool of broadcast audio tape
GB/T 11299.11-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 3:Methods of measurement for combinations of sub-systems--Section one: General
GB/T 11299.1-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 1:Measurements common to sub-systems and combinations of sub-systems--Section one:General
GB/T 11299.2-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 1:Measurements common to sub-systems and combinations of sub-systems--Section two:Measurements in the r.f.range
GB/T 11299.4-1989
Methods of measurement for radio equipment used in satelliteearth stations--Part 1:Measurements common to sub-systems and combinations of sub-systems--Section four:Measurements in the base band
GB/T 11299.3-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 1:Measurements common to sub-systems and combinations of sub-systems--Section three:Measurements in the i.f.range
GB/T 11299.12-1989
Methods of measurement for radio equipment used insatellite earth stations--Part 3:Methods of measurements for combination of sub-systems--Section two:Measurement of the figure of merit(G/T)of the receiving system in the 4GHz to 6GHz range
GB/T 11299.6-1989
Methods of measurement for radio equipment used in satellite earth stations--Part 2:Measurements for sub-systems--Section one:General--Section two:Antenna(inculuding feed network)
GB/T 11015-1989
Interface between data terminal equipment and automatic calling equipment for data communication
GB/T 11014-1989
Electrical characteristics of balanced voltage digital interface circuits