AM/FM Synthesized Signal Generator¦ RF Frequency Ranges from 100 kHz to 170 MHz ¦ Carrier Frequency Locks to ± 5 ppm Reference Oscillator ¦ Electronic Attenuator for RF Output Extends Service Life ¦ Output Level Ranges from -20 dBµ to 126 dBµ in 0.1 dB Steps ¦ FM Stereo Modulator is Standard