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2. Computation of radiowave attenuation in the atmosphere

   en.wikipedia.org/wiki/Computation_of_radiowave...

   The previous point of view of worst case leads to an elevation angle of −1.87-degree and an attenuation of 170.77 dB. With this kind of attenuation, every system would be unusable! It was found also for this case that with the nominal elevation angle, the distance of the tangent point to ground is 5.84 km; that of the worst case is 2.69 km.

3. Rain fade - Wikipedia

   en.wikipedia.org/wiki/Rain_fade

   It is possible to extrapolate the cumulative attenuation distribution at a given location by using the CCIR interpolation formula: [12] A p = A 001 0.12 p −(0.546 − 0.0043 log 10 p). where A p is the attenuation in dB exceeded for a p percentage of the time and A 001 is the attenuation exceeded for 0.01% of the time.

4. Free-space path loss - Wikipedia

   en.wikipedia.org/wiki/Free-space_path_loss

   In telecommunications, the free-space path loss (FSPL) (also known as free-space loss, FSL) is the attenuation of radio energy between the feedpoints of two antennas that results from the combination of the receiving antenna's capture area plus the obstacle-free, line-of-sight (LoS) path through free space (usually air). [1]

5. RF and microwave filter - Wikipedia

   en.wikipedia.org/wiki/RF_and_microwave_filter

   Radio frequency (RF) and microwave filters represent a class of electronic filter, designed to operate on signals in the megahertz to gigahertz frequency ranges (medium frequency to extremely high frequency). It is component that is used in electronic systems to pass or reject specific frequencies and attenuate of unwanted signals within the ...

6. Microwave transmission - Wikipedia

   en.wikipedia.org/wiki/Microwave_transmission

   The atmospheric attenuation of microwaves in dry air with a precipitable water vapor level of 0.001 mm. The downward spikes in the graph corresponds to frequencies at which microwaves are absorbed more strongly, such as by oxygen molecules.

7. Hata model - Wikipedia

   en.wikipedia.org/wiki/Hata_model

   The Hata model is a radio propagation model for predicting the path loss of cellular transmissions in exterior environments, valid for microwave frequencies from 150 to 1500 MHz.

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   www.aol.com/lifestyle/walmarts-cyber-monday...

   Shop the biggest sale of the year. Cyber week has started, and Walmart launched its finale to Black Friday savings with all-new deals for Cyber Monday. Shop the biggest sale of the year.

9. Spectral mask - Wikipedia

   en.wikipedia.org/wiki/Spectral_mask

   Attenuation of these spurious emissions is usually done with a band-pass filter, tuned to allow through the correct center frequency of the carrier wave, as well as all necessary sidebands. [ 1 ] The spectral mask is usually one of the things defined in a bandplan for each particular band .