The AST229D from AST Microwave is a Waveguide Switch with Frequency 3.9 to 4.2 GHz, Power dBm 70 dBm, Power Watts 10 kW, Insertion Loss 0.05 to 0.50 dB, Isolation 50 to 70 dB. Tags: Waveguide, Electromechanical. More details for AST229D can be seen below.