math

math

Antennas : Fractal

• Fractal Antennas Offer Benefits - Since they were first described by the French mathematician Benoit Mandelbrot in the mid-1970s, repeating geometric figures known as fractals have fascinated computer scientists, mathematicians and graphic artists.
  [ Hits: 841 | Votes: 1 | Rating: 4 ]

• The BikeLoop Antenna for VLF - BIKELOOP is a VLF home made antenna. This antenna is a double magnetic loop composed by two orthogonal loops. This document describe how the prototype was built, the purpose is to give some construction hints to people who wants to try this kind of antenna. Mathematical and electrical details are described as well
  [ Hits: 232 | Votes: 0 | Rating: 0 ]

• Richmond Amateur Radio - The RARC is the oldest ARRL affiliated club in Virginia. Founded in 1929 by Ted Mathewson, W4FJ one of the earliest Ham Radio Operators licensed by the FCC.
  [ Hits: 868 | Votes: 1 | Rating: 7 ]

• Digital ATV in simple terms - This article was first published in CQ-TV issue 208. Author try to explain digital television in layman's terms and without getting too involved in mathematics.
  [ Hits: 575 | Votes: 0 | Rating: 0 ]

• VU2BBB Repeater - Matheran, Maharashtra started by Bombay Repeater Society in late 1980s.
  [ Hits: 432 | Votes: 1 | Rating: 10 ]

• Keplerian Elements - Keplerian elements are the inputs to a standard mathematical model of spacecraft orbits.
  [ Hits: 285 | Votes: 0 | Rating: 0 ]

• European weather charts - updated every six hours at about 3,9,15,21 GMT, Isobars, isallobars, isotherms and signifcant weather.
  [ Hits: 1125 | Votes: 5 | Rating: 9.6 ]

• How to convert Maidenhead Locator to Latitude and Longitude - Blog post by Adrian M0NWK showing how to calculate the latitude and longitude at the centre of a Maidenhead locator using basic maths.
  [ Hits: 247 | Votes: 0 | Rating: 0 ]

• The KB6IBB Utilities - Ham radio frequency list consolidation software. The Ham Radio database can house a unlimited number of records. Holding frequency information from DC to Daylight. The Radio Scanner Database is designed to emulate a radio scanner. A 5,000 record table is provided and is organized by channel number.
  [ Hits: 1060 | Votes: 1 | Rating: 7 ]

• M0KGK SDR Decoder Software - KGKSDR is my attempt at some SDR decoding software. I'm putting this software together purely as a learning exercise, to better understand the mathematics behind SDR in general.
  [ Hits: 4031 | Votes: 10 | Rating: 8.1 ]

• Using Batteries - Batteries in fact and fiction. Batteries, Cells,Chemistry, Math and Radios
  [ Hits: 419 | Votes: 0 | Rating: 0 ]

• Spectral Analysis of a CW keying pulse - Key clicks mathematical explanation by W9CF
  [ Hits: 272 | Votes: 0 | Rating: 0 ]

• Demonstrating AM sidebands - Amateur radio courses teach that in amplitude modulation, sidebands arise. This can be proven mathematically, and nowadays with an SDR one can easily see them.
  [ Hits: 64 | Votes: 0 | Rating: 0 ]

• Quadrature ( I-Q ) Modulation Tutorial - Learn quadrature modulation through interactive flash programs. These programs will allow you to learn about quadrature modulation and quadrature demodulation without getting overwhelmed by math.
  [ Hits: 721 | Votes: 7 | Rating: 3.43 ]

• What is SWR - standing-wave ratio - Article about Standing-wave ratio (SWR) defined as a mathematical expression of the non-uniformity of an electromagnetic field on a transmission line. SWR is the ratio of the maximum radio-frequency (RF) voltage to the minimum RF voltage along the line.
  [ Hits: 191 | Votes: 0 | Rating: 0 ]