Key Specifications. Flange Type UG Cover Flange Flange Group Standard Minimum Frequency 9.84 GHz Maximum Frequency 15 GHz Maximum VSWR 1.25:1 Maximum Insertion Loss 0.15 dB Coupling 30 dB. WR-75 Waveguide 30 dB Broadwall Coupler, UG Cover Flange,N-Type Female Coupled Port, 9.84 GHz to 15 GHz, Copper. The PEW75CP001-30 is a WR-75 Directional Broadwall waveguide coupler with N female coupled port that operates in thefrequency range of 9.84 to 15 GHz. This Waveguide component has a maximum VSWR of 1.25:1. These designs are made ofpainted copper alloy and incorporate a broad wall configuration that result in a mid-band nominal coupling value of 10, 20, 30,40 or 50 dB. Common applications for this component would be where power measurements are required within a system formeasuring/sampling power or frequency monitoring with minimal signal loss to the main transmission line. Pasternack offersa complete family of waveguide Crossguide and Broadwall couplers that are in-stock and ship same day.