This is a high power(10kW), compact, medium gain Log-Periodic antenna that is ideal EMI immunity testing from 20 to 200 MHz. These antennas are designed for indoor anechoic chamber use. The antenna has a high front-to back ratio of 15 dB. The antenna assembly breaks down into a main boom and detachable elements. The center mast mount allows for H or V polarization. Calibration for field strength is an available option.