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Fading (165 words) |
 | In telecommunications, fading is a change in the attenuation of a communications channel. |
| The term "backhoe fade" is used humorously to describe the complete loss of signal that occurs in a communications cable when it is cut by a backhoe or other digging work. |
| Backhoe fade is one of the most common causes of failure in subterranean cables. |
| MoPro Chapter 12.7 (237 words) |
| The large range in the fades are caused by such factors as variable density of foliage cutting the earth-satellite path, bearing to the satellite, blockage effects due to roadside obstacles and the presence of underpasses. |
| Alternate suggested fade margin levels may be obtained using the indicated EERS values that are representative of roadside tree shadowing where the tree density exceeds 55%. |
| Table 12-3: Fade level ranges at the 1% and 10% probabilities derived from measured distributions which were culled in terms of frequency and elevation angle. |
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