ZTT(SH:600522) Zheng Quan Shi Bao Wang·2026-01-23 12:40Core Viewpoint - The launch of the 4.9GHz spread spectrum leakage cable product by Zhongtian RF Cable Co., Ltd. in collaboration with China Tower (Zhengzhou) Technology Innovation Center marks a significant breakthrough in high-frequency leakage cable technology and its application in complex environments like subway tunnels [1] Group 1: Product Development - Zhongtian RF has successfully expanded the application frequency of subway leakage cables from 3.7GHz to 4.9GHz, addressing the transmission bottleneck of high-frequency signals in complex scenarios [1] - The new product has undergone successful testing on Zhengzhou Metro Line 1, demonstrating excellent performance across all core indicators [1] Group 2: Industry Impact - The 4.9GHz frequency band presents higher challenges for coverage systems due to its high frequency and rapid signal attenuation, especially in environments with multiple obstructions and metal reflections [1] - The successful development and testing of this product signify a key advancement in the research and application of high-frequency leakage cable technology in China [1]