APM Elements are specially designed to be used with the APM-16 Wattmeter and are calibrated in accordance with meticulous Bird calibration procedures supported by a long history of mean deviation values to assure adherence to advertised specifications of current instruments, as well as field interchangeability with equipment purchased, used and trusted in all the years since its introduction.This APM series plug-in element (EDMO# APM-25C) has a frequency range of 100–250 MHz and rated for 25 watts of power.
