THE H field Loop antenna kit APL-130/RS manufactured by Antenna Research Associates and available from RFI Industries P/L consists of two loop antennas covering the frequency range from 1kHz to 30MHz.
Both antennas are designed for the shielded room testing requirements of MIL-STD 285 and NSA test standard 65-6.
Model PLA -130/A is a passive loop antenna capable of handling 1 kilowatt input power and model ALA - 130 R/S is an active loop antenna which provides the dynamic range required for shielded room attenuation measurements.
Both antennas are supplied with antenna factor calibration certificates and all calibrations are made relative to a 50 ohm load. The antennas are calibrated in accordance with procedures specified in IEEE-291 section 2.3.1