The 5342A Frequency Counter is particularly useful in the communication field since it can tolerate an FM carrier frequency of up to 50 MHz peak to peak. Provides automatic frequency measurement to 18GHz in a highly portable package Selectable input attenuation of 50 ohms and 1 Mohm Two input frequency ranges: 10Hz to 500MHz & 500MHz to 18GHz. Utilizes microprocessor technology Keyboard allows you to perform various math functions to allow for such things as IF offsets An 11-digit display is sectionalized for easy readout to 1Hz resolution