Trimmed for specialized tasks, the HN RF directional coupler integrates some uncommon interfaces such as the HN female. The coaxial interface is a high-voltage version of the N interface and other interfaces are available. The Model Z-344 operates over a frequency range from 700 to 850 MHz with a power handling capability of 40 kW peak, 120W average. Insertion loss is <0.2 dB and VSWR is <1.1 for both main and secondary lines. Forward coupling employs 43 dB of isolation while reverse coupling endures 33 dB. AVIEL ELECTRONICS, Las Vegas, NV. (877) 805-7381.