APM Series Plug-In Element | 100–250 MHz, 50 Watt 20000052 This UM725 speaker/microphone (EDMO# UMRMIC

This UM725 speaker/microphone (EDMO# UMRMIC BK) is colored black

Version (EDMO# 8869K9) is a double-pole

Hypo-allergenic and washable for years of trouble-free use

This adhesive liner provides a rugged

W/O TERM BARRS

APM Series Plug-In Element | 100–250 MHz, 50 Watt 20000052 This UM725 speaker/microphone (EDMO# UMRMICAPM 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 50C) has a