... function including RF carrier output,AM/FM &stereo modulation. MCH RF Signal Generator, SG-1501 RF signal generator,0.1 ... -4FM SNB≥50dBOutput attenuator0~110dB variableAM internal modulation400Hz, 1000Hz,FM internal modulation400Hz, 1000HzStereo modulationL: 400Hz, R: 1000HzExternal modulation frequencyAM ... prior notice. MCH RF Signal Generator Product,SG-1501 RF Signal Generator,0.1~150MHz frequency