The TDC06-06G18S from Transcom is a Directional Coupler with Frequency 6 to 18 GHz, Coupling 6 dB, Coupling Variation ±1.0 dB, Amplitude Flatness ±1.0 dB, Directivity 12 dB. Tags: Module with Connectors. More details for TDC06-06G18S can be seen below.