Radio Wave Propagation Resources
explains the behavior of electromagnetic waves when transmitted, or propagated from one point on to another
through a non-conductive medium like air or space.
Radio propagation in the Earth's atmosphere is affected
by the daily changes of ionization in upper atmosphere layers due to the Sun. Understanding the effects of varying
conditions on radio propagation has many practical applications, from choosing frequencies for international
shortwave broadcasters, to designing reliable mobile telephone systems, to operation of radar systems. Radio
propagation is also affected by several other factors determined by its path from point to point. This path can be
a direct line of sight path or an over-the-horizon path aided by refraction in the ionosphere. Factors influencing
ionospheric radio signal propagation can include sporadic-E, spread-F, solar flares, geomagnetic storms,
ionospheric layer tilts, and solar proton events.
|Amateur Radio Propagation Studies | df5ai.net
This site primarily addresses phenomena in the radio world above 50 MHz including long-distance forward
scattering by sporadic E layers in the ionosphere, backscatter of radiowaves aligned to the Earth magnetic
field (radio Aurora and its mid-latitude companion, i.e. FAI), tropospheric beyond-the-horizon radio
propagation, meteor scatter communication, intercontinental VHF/UHF/SHF communication by using the
scattering properties of the lunar surface, transequatorial VHF propagation and many other fascinating
aspects of radiowave propagation on very high frequencies, by Volker Grassmann.
Antennas & Propagation | users.skynet.be/on5au
Online beacons, hourly MUF graphs, antenna plots, real time prop-maps, photos, by ON5AU.
A Seven Year Study of 50 mHz
Sporadic-E Propagation | home.swbell.net/pjdyer/cq/cq7208a.htm
This report summarizes the results of a seven year study made in the 50 mHz
amateur band, by Pat Dyer.
Basic Propagation Tutorial |
Centre for RF Propagation and Atmospheric Research (CPAR)
| cpar.qinetiq.com | +44 (0)8700 100 942
technical centre of excellence for the investigation of radio frequency propagation and the impact of the
propagation environment on communication, radar, navigation & surveillance systems operating at
frequencies from 10 kHz to 100 GHz.
Estimated Range of Distances for Sporadic E Propagation Modes
By Todd Emslie.
FAQ Related to Propagation of Radio
Waves | qsl.net/vu2msy/propagation.htm
Study materials for the amateur radio station operator's certificate examination.
FREE Propagation Software Programs
| sss-mag.com/prop.html#software | 865-717-9339
Downloadable programs including Radio
Propagation & Diffraction Calculator, Wireless RF Performance Evaluation Tool RCalc 3.13, and HF 32-bit
Propagation Models from NTIA/ITS.
HF Radio Propagation Primer | ae4rv.com/tn/propflash.htm
Use this Flash movie to learn how HF or "Short-wave" radio works, by AE4RV.
Indoor Radio Propagation | sss-mag.com/indoor.html
Article by Theodore S. Rappaport, information, and resources from Spread Spectrum Scene.
Ionospheric Physics of Radio Wave Propagation
| ecjones.org/physics.html | Knoxville, TN
By Edwin C. Jones, MD, PhD (AE4TM)
Department of Physics and Astronomy, University of Tennessee.
Multi-Hop Paths | home.comcast.net/~mdechristopher/prop_multihop.html
This article helps to clear up some misconceptions about multi-hop paths, from K1KAA.
Long Path HF Radio Propagation |
Article and with screen print images from an HFx High Frequency Wave
Modeling Program, by Norm Styer - AI2C.
Propagation Tutorial | mike-willis.com/Tutorial/free_space.htm
Tutorial on basic propagation of a radiowave in free space, by Mike Willis.
QST Propagation Charts | arrl.org/qst/propcharts
Charts calculated to cover calendar months and includes separate charts for each US region.
Radio Mobile Freeware | cplus.org/rmw/english1.html
This software is a tool used to predict the performance of a radio system.
Radio Propagation Conditions | hamradio-online.com/propagation.html
Information & links from Ham Radio Online.
Radio Propagation Theory Notes
Layman Level Explanations Of "Seemingly" Mysterious 160 Meter Propagation Occurrences.
Propagation | radio-electronics.com/info/propagation/index.php
Basic principles, types of propagation.
Radio-Wave Propagation | ham-shack.com/propagation.html
Information from Ham Shack.
Radio Wave Propagation | sec.noaa.gov/info/Radio.pdf
303–497–5127 | Boulder, CO
Article from the Space Environment Laboratory
Radiowave Propagation in
the Medium and High Frequency Spectrum | qsl.net/g3cwi/Downloads/Propagation
From the G3CWI Web site.
Radio Wave Propagation Through the Ionosphere | farside.ph.utexas.edu/teaching/plasma/lectures/node59.html
By Richard Fitzpatrick, Professor of Physics, The
University of Texas at Austin.
SEC's Radio User's Page | dxzone.com/cgi-bin/dir/rate.cgi?ID=13337
Provides radio operators with current data on the state of the ionosphere.
Simpleton's Guide to:
Transmitter Range | artscipub.com/simpleton/simp.range.html
| Burbank, CA
Information on how to properly estimate a signal's
range, and includes a transmitter range estimator table, by Artsci Inc.
Tesla's Contribution to
Radio Wave Propagation | mwr.medianis.net/pdf/Vol7No2-05-AMarincic.pdf
Abstract which describes a review of Tesla’s contribution to radio wave
propagation and wireless power transmission.
The 160-Meter Band: An Enigma Shrouded
in Mystery | solar.spacew.com/cq/cqmar98.pdf
This article by Cary Oler and Ted Cohen, sheds some light on why 160 meters is so
unpredictable and what’s being done to reveal its secrets.
The Basics of Radio Wave Propagation | ecjones.org/propag.html
By Edwin C. Jones, MD, PhD (AE4TM) Department of Physics and Astronomy, University of
The Radio Propagation Page | keele.ac.uk/depts/por/psc.htm
Provides a comprehensive listing of Internet sources relating to radio propagation at all levels from
introductory to professional, and presents information on the RSGB's Propagation Studies Committee, from
the Propagation Studies Committee of the Radio Society of Great Britain.
Topband Radio Propagation | spacew.com/www/topband.html
A variety of tools to help you improve your chances of succeeding at DX, from Solar Terrestrial Dispatch.
Transequatorial Radio Propagation | ips.gov.au/Category/Educational/Other
Article from the IPS Radio & Space Services, Sydney, Australia.
Radio wave propagation definition, information, and links.
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