This document provides information on the AH-10133-045045MR 45° FoV horn design and general guidance on integration to the MOD_CH101-03-01. Use of this horn allows the user to modify the CH101 from an 180° FoV to a 45° FoV. CAD file for AH-10133-045045MR horn design is available from Chirp to allow 3D printing of horns. Recommendations are included for adhesives, gluing instructions and basic verification after installation of horn to the module.