The CTM-20-1.25G SQ from Crane Aerospace & Electronics is a Directional Coupler with Frequency 500 to 2000 MHz, Coupling 20 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±1 dB, Directivity 22 dB. Tags: Module with Connectors. More details for CTM-20-1.25G SQ can be seen below.