The C-1726-16 from ET Industries is a Directional Coupler with Frequency 1.7 to 26.5 GHz, Coupling 16 dB, Frequency Sensitivity ±0.60 dB, Directivity 14 dB, Insertion Loss 1.2 dB. Tags: Module with Connectors. More details for C-1726-16 can be seen below.