Key Specifications. Flange Size UG-1530/U Flange Flange Group Standard Minimum Frequency 21.7 GHz Maximum Frequency 33 GHz Maximum VSWR 1.5:1 Maximum Insertion Loss 0.25 dB Coupling 40 dB. WR-34 Waveguide 40 dB Broadwall Coupler, UG-1530/U Flange,2.92mm Female Coupled Port, 21.7 GHz to 33 GHz, Copper. The PEW34CP001-40 is a WR-34 Directional Broadwall waveguide coupler with 2.92mm female coupled port that operates inthe frequency range of 21.7 to 33 GHz. This Waveguide component has a maximum VSWR of 1.5:1. These designs are madeof painted 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 systemfor measuring/sampling power or frequency monitoring with minimal signal loss to the main transmission line. Pasternackoffers a complete family of waveguide Crossguide and Broadwall couplers that are in-stock and ship same day.