This standard specifies the product quality level and quality level requirements for shortwave single-sideband communication equipment, including transmitters, receivers and transceivers (radio stations). This standard applies to shortwave single sideband communication equipment and is the basis for assessing the quality level of shortwave single sideband communication equipment products.
SJ/T 9506-1993 history
1993SJ/T 9506-1993 Short-wave single sideband commumication equipment--Quality grading standard