The G-CELL from TOYO Corporation is a Cubic TEM Cell that operates from 10 kHz to 1 GHz. It can handle an input power of 150 W and an electric field strength of 30 V/m. It can accommodate EUT sizes of up to 40 x 40 x 40 cm and has a shielding of more than 50 dB. This TEM cell has a large opening design allowing easy EUT installation and customizable power/signal line filters. It is designed for immunity control and preliminary measurements before authentication tests in a radio anechoic room and an open site. This TEM cell is capable of easy EMI measurement with a spectrum analyzer and assures consistency in radiated immunity tests. It enables easy radiated EMI measurement and immunity test of EUTs in the transmission line installed on the floor. This TEM cell measures 70 x 70 x 70 cm and has a BNC terminal.