If you know the EIRP and the gain of the real atenna, it is possible to Cloud Attenuation. Cloud attenuation becomes increasingly important to consider for reliable satellite communications at frequencies above 10 GHz .For clouds or fog consist of small droplets, less than 0.01 cm, the Rayleigh approximation is valid for frequencies below 200 GHz and it is possible to express the attenuation in terms of the total water content per unit volume . At the top of this web page is a link to "Link Budgets index page". The equivalent one-way free-space path loss for isotropic antennas at the free-space range is also provided. Our RF calculators and converters will provide the figures you need for your radio frequency engineering needs. This is known as EIRP. This path loss value can be used with transmission-loss codes or diagrams to assess actual electromagnetic system performance in a real-world environment. The two-rays ground-reflection model is a multipath radio propagation model which predicts the Pasternack's RF calculators and conversions section provides engineers valuable and easy-to-use tools ranging from complex mathematical formulas to simple conversions. The one-way free space loss factor (α1), (sometimes called the path loss factor) is given by the term 4πR2)(4π/λ2) or (4πR /λ)2. 20. calculation of that range value. The EIRP allows comparisons between different emitters regardless of type, size or form. dB to watts calculator. Azimuth and Elevation Calculator: Antenna Gain(dBi) - Beamwidth - Aperture Efficiency Calculator: Distance To/From and Round-Trip Time Delay Calculator: Figure of Merit Calculator: Satellite Link Budget and Path Loss Our RF and microwave calculators and converters will provide the figures you need for your radio Pasternack's RF Calculators and Conversions section provides engineers valuable and easy-to-use tools ranging from complex mathematical formulas to simple conversions. Pasternack's website offers a large selection of RF calculators and converters available for free for general use. https://www.radartutorial.eu/01.basics/The Radar Range Equation.en.html Radar Blind Speed Prop Time Path Loss 2-Way Path Loss 1-Way NF-NT Mixer LPF HPF Coupler Coils Cascade BPF Attenuators Home a65550 a65560 a65560 a65560 a65560 a66500 a66560 FreqUnits SizeMult vi1 RF Cafe Calculator Workbook Revision History Version Description 1.00 Initial release. 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