This document presents the antenna pattern test report conducted by dB Technology (Cambridge) Ltd. for Sepura Limited's 330-00016 (Pulse 403-470MHz Extended Helical) antenna. The tests were performed at the Radio Test Site in Cottenham, Cambridge, UK, on June 18th, 2019. The report details the methodology, equipment used, and results obtained during the antenna gain testing.
The tests involved measuring the radiated emissions using a substitution method on a 10m open area test site. Gain correction factors were derived to accurately determine the antenna gain under various conditions. Radiation patterns were established by rotating the UUT and recording receiver readings at 10-degree intervals. The report includes polar plots illustrating the antenna gain in free space, lapel-worn, and belt-worn configurations, with and without RSM cables and 2-WK cables.
The document provides a comprehensive analysis of the antenna's performance, including maximum, minimum, and average gain values for each test scenario. The results are intended to provide Sepura Limited with valuable insights into the radiation efficiency of the 330-00016 antenna when used with the SC21 UV band radio.