Antenna size depends on the frequency you want to hear: higher frequency (bigger number) – smaller antenna.You need an antenna that receives signals from all directions – called omnidirectional.Materials make no difference: any type of wire is good, as long as it keeps its shape. Metal coat hangers are popular, multi-stranded or solid makes no difference. I’m… Leer más »
https://github.com/mutability/dump1090 Changes required for Plane Plotter Mlat (multi-lateration) So that’s Malcolm’s version of dump1090 installed and running on your RPi. This version already incorporates the changes required for a Plane Plotter Mlat Ground Station. Run the new version of dump1090 by typing: ./dump1090 –interactive –net You should see the same display as before on the… Leer más »
https://www.hackster.io/mariocannistra/radio-astronomy-with-rtl-sdr-rpi-and-amazon-aws-iot-45b617 http://rishi-patel.blogspot.com/2013/10/summary-of-horn-antenna-project.html
https://beyondnerva.com/nuclear-thermal-propulsion/ Unlike most things at Beyond NERVA, the nuclear thermal rocket (NTR) has been built and tested by both the US and the USSR. Both programs looked at a solid core NTR, the simplest type of nuclear rocket. In a nuclear thermal rocket, the heat from a reactor is used to directly heat a propellant,… Leer más »
September 25, 2017 Previous | Calibre is a pretty popular eBook reader but it has a weakness. Fonts looks terrible, at last on Windows. Here you’ll find an easy solution for this. This is my CSS Stylesheet for a better “Font Smoothing” in Calibre and it works pretty well. I recommend the following fonts, in case they exist on your machine. Category: CSS
Ahora, ¿qué es la Capacidad de Peukert?Es la capacidad de la batería medida en un rating de descarga de 1 amperio. Las baterías casi nunca dicen la capacidad de Peukert, los distribuidores basan la capacidad en ratings de descarga muy bajos, ya que duran más y obtienen mejores lecturas de esta forma. Se conoce como tasa… Leer más »
That is what antimatter can do. Annihilating a kilogram of antimatter will give out about ten billion times the amount of energy released when a kilogram of TNT explodes. Under suitable circumstances a proton can change into a neutron and emit energy some of which materializes as a positron, similar to what happens in the… Leer más »
https://en.wikipedia.org/wiki/Tunguska_event The Tunguska event was a large explosion that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate (now Krasnoyarsk Krai), Russia, on the morning of 30 June 1908 (NS).[1][2] The explosion over the sparsely populated Eastern Siberian Taiga flattened 2,000 square kilometres (770 square miles) of forest, yet caused no known human casualties. The explosion is generally attributed to the air burst of a meteor. It is classified as an impact… Leer más »