This standard specifies the test method for cross-modulation of transmitting tubes. This standard applies to transmitting tubes used in television transmitters.
GB/T 3789.28-1991 history
2013GB/T 3789-2013 Measurements of electrical properties of transmitting tubes
1991GB/T 3789.28-1991 Measurements of the electrical properties of transmitting tubes--Method of measuring the cross modulation
GB/T 3789.28-1991 Measurements of the electrical properties of transmitting tubes--Method of measuring the cross modulation was changed to GB/T 3789-2013 Measurements of electrical properties of transmitting tubes.