RECOMMENDATION ITU-R BS.703 - Characteristics of AM sound broadcasting reference receivers for planning purposes ANNEX 1 1 Sensitivity 2 Selectivity 3 Performance in the presence of strong signals 4 Intermediate frequency 4.1 Image rejection ratio ANNEX 2 1 Overall audio-frequency response and system considerations 1.1 Narrow-band systems 1.2 Wide-band system 2 Relative RF protection ratios versus bandwidth and selectivity 3 Automatic gain control (AGC) performance 4 Automatic frequency control of SSB receivers 5 Overall total harmonic distortion 6 AF signal-to-noise ratio at higher input signal levels 7 System effects on stereophonic AM broadcasting 8 Compatibility between the main programme and additional information signals