Cable Signal Loss Calculator
Calculate signal attenuation in coaxial and Ethernet cables based on cable type, length, and frequency.
Signal Loss Analysis
Signal attenuation (loss) increases with cable length and frequency.
Total Loss (dB) = Loss per unit length × Cable Length
Typical coaxial cable loss (per 100 ft at 1 GHz):
| Cable Type | Loss (dB/100ft) |
|---|---|
| RG-6 | 5.6 |
| RG-59 | 11.1 |
| RG-11 | 3.6 |
| LMR-400 | 3.9 |
Ethernet cable loss:
| Cable Type | Max Length | Typical Loss |
|---|---|---|
| Cat5e | 100 m (328 ft) | 24 dB at 100 MHz |
| Cat6 | 100 m (328 ft) | 19.8 dB at 250 MHz |
| Cat6a | 100 m (328 ft) | 18 dB at 500 MHz |
Every 3 dB of loss means the signal power is cut in half.