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WSPR (pronounced "whisper") is an acronym for Weak Signal Propagation Reporter. It is a protocol, implemented in a computer program, used for weak-signal radio communication between amateur radio operators. The protocol was designed, and a program written initially, by Joe Taylor, K1JT.
Meep (MIT Electromagnetic Equation Propagation) is a free and open-source [1] software package for electromagnetic simulations, developed by ab initio research group at Massachusetts Institute of Technology in 2006.
The simplest way to compensate the rain fade effect in satellite communications is to increase the transmission power: this dynamic fade countermeasure is called uplink power control (UPC). [6] Until more recently, uplink power control had limited use, since it required more powerful transmitters – ones that could normally run at lower levels ...
Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.
Along coastlines during Autumn and Spring, due to multiple stations being simultaneously present because of reduced propagation losses, many FM radio stations are plagued by severe signal degradation disrupting reception. In higher frequencies such as microwaves, such refraction causes multipath propagation and fading.
The windows are themselves dependent upon clouds, water vapor, trace greenhouse gases, and other components of the atmosphere. [ 8 ] Out of an average 340 watts per square meter (W/m 2 ) of solar irradiance at the top of the atmosphere, about 200 W/m 2 reaches the surface via windows, mostly the optical and infrared.
How to Have More Energy: 7 Tips. This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. Life can get incredibly busy, and keeping up often hinges on having enough energy.
From January 2008 to December 2012, if you bought shares in companies when Robert D. Walter joined the board, and sold them when he left, you would have a 10.3 percent return on your investment, compared to a -2.8 percent return from the S&P 500.