The SMC-192D600 from Scientific Microwave Corporation is a Waveguide Coupler with Frequency 6 to 18 GHz, Coupling 30 dB, 40 dB, 50 dB, 60 dB, Directivity 20 dB. Tags: Double Ridged Coupler, Broadwall Coupler. More details for SMC-192D600 can be seen below.