IEVref: 705-08-05 ID: Language: en Status: Standard Term: free-space basic transmission loss Synonym1: Synonym2: Synonym3: Symbol: AoLbf Definition: the transmission loss, usually expressed in decibels, that would occur if the antennas were replaced by isotropic antennas located in a perfectly dielectric, homogeneous, isotropic and unlimited environment, the distance between the antennas being retained NOTE – If the distance d between the antennas is much greater than the wavelength λ, the free-space attenuation in decibels will be: ${A}_{0}=20\mathrm{log}\left(\frac{4\pi d}{\lambda }\right)$ Publication date: 1995-09 Source: Replaces: Internal notes: 2017-06-02: Cleanup - Remove Attached Image 705-08-05.gif CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: