To determine the approximate loss of SMA cable assemblies, click on the appropriate chart below and multiply the unit length attenuation from the graph by the total coaxial cable length requested in the same unit of measure, for example: a 10 m length of LMR-195 cable at 1.575 GHZ (GPS L1 frequency) has an attenuation of 0.48 dB/m x 10 m = 4.8 dB (output is about a third of the original power).