The EMCO 3301 41" rod Monople Antenna is designed to measure the “E” field in a single band over the prescribed frequency range. It is composed of three principal sections: a sensing rod, a ground plane and a broadband, high input impedance pre-amplifier. Internal attenuators of 10dB and 30dB provide the ability to increase the upper limit of the antenna to 22V/m. A saturation indicator alerts the user should overload occur. The mechanics of the antenna consist of an adjustable rod, a 24” x 24” counterpoise. A high input impedance amplifier built into the base and a battery charger.