RadioFrequency: A professional software application for the ICOM IC-R8500 dedicated to all Ham, SWL and Radio Listeners. The software is 100% Freeware.
VOACAP: VOACAP (Voice of America Coverage Analysis Program) is free professional high-frequency (HF) propagation prediction software from NTIA/ITS, originally developed for Voice of America (VOA).
Space Weather at SANSA: SANSA Space Science is host to the only Space Weather Regional Warning Centre in Africa which operates as part of the International Space Environment Service (ISES). The Space Weather Centre provides an important service to the nation by monitoring the sun and its activity to provide information, early warnings and forecasts on space weather conditions. The space weather products and services are required primarily for communication and navigation systems, in the defence, aeronautics, navigation and communication sectors.
HF-FAX: "There are many facets of Radio Communications, and one of the most fascinating mode is Image Communications such as Facsimile, Wefax and Slow Scan TV (SSTV). This web site is dedicated to this aspect of Image Communications."
National Oceanic & Atmospheric Administration (NOAA): "NOAA's Mission is to describe and predict changes in the Earth's environment, and conserve and wisely manage the Nation's coastal and marine resources."
AMSAT-NA: AMSAT is a worldwide group of Amateur Radio Operators who share an active interest in building, launching and then communicating with each other through non-commercial Amateur Radio satellites.
Radio Frequency (RF)