适用于无线电通讯设备，固定敷设的高频、超高频传输线及类似的高频电子装置中，作设备内外射频信号的传输。

结构图
1——镀银铜线
2——PTFE/FEP
3——镀银铜线编织
4——FEP
型号美军标内导体根数/直径mm标称绝缘外径mm标称电缆外径mm标称特性阻抗Ω衰减常数≤dB/m试验电压KV计算重量kg/km200MHZ3000MHZSFF-50-1RG1787/0.100.871.8500.853.41.27.51SFF-50-1.5-1RG3167/0.181.52.550.502.02.016.0SFF-50-1.5-2RG316D7/0.181.53.20.502.02.028.0SFF-50-2-1 1/0.732.23.30.311.273.026.3SFF-50-2-2 1/0.732.240.311.273.044.4SFF-50-3-1RG3031/0.9334.50.230.954.250.4SFF-50-3-2RG1421/0.9335.50.230.954.279.4SFF-50-5 1/1.484.66.40.150.676.586.9SFF-50-7-2RG3937/0.827.2510.20.120.5210.0235.0SFF-75-1 1/0.170.871.8750.742.91.07.28SFF-75-1.5-1RG1797/0.101.52.550.502.01.815.2SFF-75-1.5-2RG179D7/0.101.53.20.502.01.827.2SFF-75-3-1 1/0.5534.50.230.953.647.4SFF-75-3-2 1/0.5535.50.230.953.676.5SFF-75-5 1/0.824.66.40.150.665.588.5