为适应我国电视广播事业发展的需要,我所新近研制出一种适合于“UHF”频段CATV用的“G-3”号低衰减泡沫同轴电缆(75-5型)。“G-3”号电缆经测试,各种性能皆优异,高频性能特别好。与国内同类产品老式泡沫电缆相比较,它具有衰减小、阻抗均匀、驻波比小的优点,克服了以前老式泡沫电缆衰减 In order to meet the needs of the development of television broadcasting in our country, I recently developed a “G-3” low attenuation foam coaxial cable (75-5 type) suitable for CATV in “UHF” band. “G-3” cable has been tested, all kinds of excellent performance, high-frequency performance is particularly good. Compared with the domestic similar products of old foam cable, it has the advantages of small attenuation, uniform impedance, small standing wave ratio, overcoming the old-fashioned foam cable attenuation