Ключевые слова:
Radiocommunication|Test equipment|Marking|Telephone transmitters|Modulation|Frequencies|Acoustic measurement|Frequency response|Mobile radio systems|Radio transmitters|Signal distortion|Performance|Telephone equipment|Volume (sound)|Radio receivers|Errors|Performance testing|Receivers|Intermodulation|Radio equipment|Communication equipment|Mobile communication systems|Frequency measurement|Tolerances (measurement)|Electrical wave measurement|Instructions for use|Telephone receivers|Calibration|Telephony|Grades (quality)|Noise (spurious signals)|Telephone systems|Telephones|Power measurement (electric)|Radiotelephony|Bandwidths|Testing conditions|Circuits|Sensitivity|Telecommunication systems|Audiofrequencies