This document presents the antenna gain test report for the OPPO mobile phone, model CPH2737, operating under the FCC ID R9C-OP24321. The tests were conducted on April 21, 2025, by Guangdong OPPO Mobile Telecommunications Corp., Ltd., located in Dongguan, China. The report details the antenna gain and type specifications for various frequency bands, including 2.4G WiFi, 5G WiFi, WiFi 6E, BT, and NFC. The software version used during testing was ColorOS 15.0.
The antenna gain measurements were performed in an anechoic chamber, and 3D scans were utilized to determine the highest gain values. The report also includes 3D radiation patterns for different antenna configurations. The test setup and measurement procedures are described, adhering to IEEE Std 149-2021 standards. The document lists the test equipment used, including the GTS RayZone-2800 and Network Analyzer E5071C, along with their calibration dates.