RF Cable Loss at GPS L1
From the Times Fiber Communications, Inc 'Nominal Loss Characteristics' table, and help from David Salonimer and George Bynum, I determined the loss in dB per meter for a couple of popular RF cables at the GPS L1 center frequency (1575.42MHz).
| Type | loss (dB/m) |
outer diam. (mm) |
impedance (Ohms) |
| RG8 | 0.39 | 10.29 | 50 |
| RG8X | 0.6(?) | 6.15 | 50 |
| RG58C | 0.90 | 4.95 | 50 |
| RG59 | 0.51 | 6.15 | 75 |
| RG142/RG400 | 0.59 | 4.95 | 50 |
| RG174 | 1.39 | 2.8 | 50 |
| RG188 | 1.26 | 2.74 | 50 |
| RG316 | 1.28 | 2.49 | 50 |
| Belden 9913 (RG8/U) |
0.20 | 10.29 | 50 |
You want to know the loss of your cable ? Drop me a line with the type number
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