Narda Model 23696 is a 2-4 GHz, 6 dB directional coupler with SMA female connectors. A similar model is Narda Model 4013C-6. Coupling Nominal: 6 dB +/- 1.00 dB Frequency Sensitivity: +/-0.60 dB Insertion Loss Excluding Coupled Power: 0.20 dB True: 1.80 dB Minimum Directivity: 22 dB VSWR: 1.15 Power Average Incident (Watts): 50 Average Reflected (Watts): 2 Peak (kW): 3