The McMartin TX 300A FM Modulation Calibrator is a specialized device designed to accurately calibrate FM modulation levels. This singular unit is manufactured by the brand McMartin and is a reliable tool for ensuring precise modulation calibration in various communication systems. Though untested for functionality, this device holds potential for professionals in the field looking to maintain accurate and efficient FM modulation levels.
RARE! Attached power cord is sticky and gross. We did try to clean it