The Model 4220A is a single-channel power meter that can cover from -70 dBm to +44 dBm over a frequency range of 10 kHz to 100 GHz depending on sensor selection. (Sensors sold seperately.) The meter's ability to store complete calibration information for up to four interchangeable sensors means that a variety of applications involving different levels and frequencies can be met without the need for recalibration.
