littlensa.blogg.se - Best ham radio propagation software

The Brendan Trophies: Insights for the New MillenniumĬan amateurs cross the Atlantic on 144 MHz without satellites or moonbounce?.

In this one Tad Cook, K7RA, formerly K7VVV, gives a summary of what the numbers in a propagation forecast mean and how they are compiled. W1AW broadcasts a weekly Propagation Bulletin.

Propagation Broadcasts and Forecasts Demystified.

Radio Waves And Communications Distance.

A solid knowledge of how signals travel will help you decide if you've got a fighting chance. in Savannah, and you'd like to reach out and QSO someone in southern Europe.

One of the world's leading ionospheric scientists explains the physics of sporadic E.

Use this to your DX advantage.Ī Beginner's guide to meteor-scatter communication. The transitions from darkness to daylight and daylight to darkness cause drastic changes in the ionosphere. What the Numbers Mean, and Propagation Predictions-a brief introduction to propagation and the major factors affecting it. A rudimentary knowledge of sunspots, solar flares and mass ejections will help the amateur take advantage of these effects to enhance his pleasure, or understand his plight. The Sun, being the largest engine in our solar system, has a great effect on propagation as its "exhaust" interacts with our Earth's magnetic field. More detailed discussions and the underlying mathematics of radio propagation physics can be found in the references listed under additional resources. This page provides basic understanding of the principles of electromagnetic radiation, the structure of the Earth's atmosphere and solar-terrestrial interactions necessary for a working knowledge of radio propagation. How radio waves propagate in other than straight-line paths is a complicated subject, but one that need not be a mystery. Obviously this does not happen all the time, because long - distance communication depends on radio waves traveling beyond the horizon. Radio waves, like light waves and all other forms of electromagnetic radiation, normally travel in straight lines.