Valsts valodas centra izstrādātie transporta, infrastruktūras un sakaru termini

Konteksts: [..] To provide co-channel interference protection of 14 dB (5 to 1 distance ratio, as shown below) desired signal to undesired signal (D/U), the free-space loss (FSL) formula is used to calculate both the free-space loss of the desired signal (FSLD) and the free-space loss of the undesired signal (FSLU): FSL (in dB) = 32.4 + 20 log f + 20 log d where f = frequency in MHz d = distance in km. [..]
Avots: Annex 10 to the Convention on International Civil Aviation. Volume V. Aeronautical Telecommunications.