The 82AD Modulation Meter is a handy portable or bench digital modulation meter offering frequency response from 30Hz to 100kHz. Frequency modulation ranges of 10, 100, and 300kHz full scale, with accuracy of ?2% of reading for deviations up to 300kHz and modulation frequencies between 30Hz and 100kHz. RF input sensitivity of 10 mV rms (10 to 520MHz) and 30 mV rms (520MHz to 1.2GHz). 4 digit LED display.