Ham cap provides a comole automation interface that 3rd party programs can use to start ham cap, set prediction parameters, and run predictions. This software is even used by the military and other clients around the world. A comprehensive propagation resource compiled by tomas hood, editor of the propagation columns of cq, cq vhf, popular communications, and monitoring times magazines. Ray tracing models a radio waves path through the ionosphere. The radio emissions begin around 300 mhz and drift downward in frequency at about 20 mhzsec. The following links will give you some information on propagation and its properties. The difference in frequency between operational muf and basic muf is in practice from ten to thirtyfive percent. Currently it works on linux and windows 32 bit vista tested. Radio propagation radio propagation is the study of how radio waves travel from a transmitter site to a receiver site through the atmosphere. The maximum usable frequency muf is the highest frequency that, with a probability of 50% of the time, can be used for radio communication between two points at a specified distance but not necessary in all directions via refraction by the ionosphere. Our maps are based on actual rf propagation, topography, and land cover data. Dx toolbox shortwave ham radio hf radio propagation. Predicting propagation in ham radio with voacap online dummies.
High frequency hf propagation models 230 mhz irregular terrain model itm longleyrice 20 mhz 20 ghz if77 wave propagation model gierhartjohnson airground millimeterwave propagation. There are many models that predict rf propagation but the most known is the hataokumura. The first radio emissions to arrive on earth following a flare is the bursty type iii storm occuring for the first 56 minutes following a flare. Software, data and validation examples for ionospheric and tropospheric radio wave propagation and radio noise rollup image you are here home itur study groups sg 3 software, data and validation examples for ionospheric and tropospheric radio wave propagation and radio noise. Radio signals are affected by terrain elevation between the sites, and obstructions, including trees, buildings, etc. The hart of every rf simulation tool is the prediction model. Quickly create rf propagation maps for anywhere in the world. Propagation prediction programs and forecasts radio society. Propagation software for communications, dtv, fm, lptv probe gives you the ability to be an expert at predicting radio propagation in the 20 to 20,000 mhz. Radio propagation prediction software an overview, article, tutorial about the basics of radio propagation prediction software for use on the hf bands for predicting broadcast coverage, as well as the possibility of establishing two way radio communications, maritime mobile radio communications, and for many more applications. Any white bubble indicates no suitable frequency or high absorption. Listen and change stations as you browse the internet.
This workinprogress guide should get you well started with the software. Softwright, a gsa contract holder, is the developer of the terrain analysis package tap pcbased terrestrial rf propagation software. Radio mobile online is a radio wave propagation prediction tool dedicated to amateur radio. Institute for telecommunication sciences resources radio propagation software high frequency high frequency propagation models. The characteristics of a propagating rf signal largely depends on the radio frequency, geographic terrain, foliage, buildings, and varying weather conditions. Tower coverage quickly create rf propagation maps for. Fm and tv propagation curves federal communications. Modeling a radio waves path through the ionosphere. Propagation prediction software to top of this page what is propagation. The list below provides links to propagation prediction programs and forecasts. Since the release of the first windows environment in 1985, some publishers and amateurs have created small windows applications ontheair oriented giving an overview of propagation conditions. Software, data and validation examples for ionospheric and.
Propagation prediction programs and forecasts radio. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. While listening or planning to work a dx station, the radio amateur would like to know what are the current propagation conditions. Radiolink propagation prediction calculate path losses of a pointtopoint radio link.
Propview propview uses the included ioncap propagation prediction engine to forecast the minimum and maximum useable frequencies between two locations over a specified 24 hour period. Dxprop is a radiowave propagation forecast freeware for ham radio operators, permits to predict propagation on 12 frequencies. In a typical application integrated with ham cap, the user will rightclick on a callsign, and ham cap will pop up and display the pointtopoint propagation chart. Usable hf frequencies page refreshed every 20 minutes use the indicated color red, yellow, green, blue, white, etc. Free online vhfuhf propagation tool for technical and non. The area prediction data will be superimposed on the dx atlas map, and you will be able to magnify and scroll the map, and view it in the azimuthal and 3d projections. These are relativistic electrons released by the flare traveling through qrp propagation. Hamcap hf propagation prediction tool for amateur radio.
Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another, or into various parts of the atmosphere. Jan 20, 2020 calculations the hart of every rf simulation tool is the prediction model. Describe your experience with the hf propagation prediction software and tell us why you give it the rating you did required. In most prediction software and in amateur radio and shortwave listening references the muf refers to the first definition. To help you be in the right place at the right time, propagation prediction programs are available. Beamfinder is a software tool designed to conduct analyses for radio amateurs interested in radio propagation studies. It uses digital terrain information and a mathematical model to simulate radio transmissions between two fixed sites radio link or between a fixed site and a mobile radio coverage. The radio emissions begin around 300 mhz and drift downward in. Current sunspot cycle activity, space weather, solar storm. The space weather prediction center, the noaa government agency that provides much of the online data used by dx toolbox, has changed most of the data sources.
Institute for telecommunication sciences resources radio propagation software radio propagation software. Printable copies of these propagation curves are available at fm and tv propagation curves graphs. How radio waves propagate in other than straightline paths is a complicated subject, but one that need not be a mystery. The downloads made available through links on this page contain software developed by ntia. This software by roger coude ve2dbe predicts the performance of vhf and uhf radio systems. Ham radio operators and shortwave listeners can optimize long distance communications to various areas of the. Near vertical incidence skywave nvis propagation, near vertical incidence skywave propagation is a form of radio wave propagation used on the mf and hf bands to provide radio communications and broadcasting coverage over short distances, especially where the terrain contains obstacles. High frequency and vhf radio propagation data, solar and geomagnetic realtime and historic data, sunspot activity reports, as well as forecasts. Operating on the highfrequency hf ham radio bands can be very exciting as conditions change around the world.
Radio propagation prediction freeware free download. Some of the articles can get quite deep into the mathematics and physics. As a form of electromagnetic radiation, like light waves, radio waves are affected by the phenomena of reflection, refraction, diffraction, absorption, polarization, and. Mar 19, 2020 ray tracing models a radio waves path through the ionosphere. This site is dedicated to voacap voice of america coverage analysis program for hf propagation prediction and ionospheric communications analysis, an improved and corrected version of ioncap. Acehf professional propagation software for hf radio operators. Many are free, such as the hamcap software from alex shovkoplyas ve3nea. Maps can be created for nearly every frequency range. Irregular terrain model itm longleyrice 20 mhz 20 ghz if77 wave propagation model gierhartjohnson airground. While listening or planning to work a dx station, the radio amateur would like to know what are the current propagation conditions, know if the propagation is open toward a specific location at a specific time, or at. Also note that any software listed here is downloaded at the readers own risk, and the rsgb is not responsible for any unwanted effects arising from its use.
The home of the online hf propagation prediction tool, proppy, providing ondemand pointtopoint and area predictions using the itus iturhfprop application in accordance with itur p. Hf propagation prediction is a statistical science. Irregular terrain model itm longleyrice 20 mhz 20 ghz. Use it to find out who should be able to hear you right now.
Propagation prediction programs and forecasts radio society of. Free solarterrestrial data displayed on your web page or site, updated every 3hours. Create terrain profiles using digital elevation models. Ntia does not make any warranty of any kind, express, implied or statutory, including, without limitation, the implied. Its created a propagation prediction model know as the irregular terrain model. Propagation of rf signals american radio relay league. Uses openstreetmap tiles or public sattelite imagery as background. Radio propagation prediction software free download. Please note the rsgb is not responsible for the content of external websites. Propagation prediction software uses data such as the a index and k index to model propagation.
Radio mobile online online rf propagation simulation software. Want to know the best band and time of day to contact a certain location or dxpedition. Predicting propagation in ham radio with voacap online. Feb 25, 2015 qradiopredict is an experimental software for vhfuhf propagation prediction and radio coverage analysis. Nov 30, 2014 radio mobile online is a radio wave propagation prediction tool created and maintained by roger coude, ve2dbe, which is dedicated for use by the ham radio community. Our simple to use system will allow you to create tower coverage maps for any geographical area in the entire world. Nov 25, 2019 after having truthfully examined the merits and limitations of radio propagation forecasting systems in general, let us now take a look at typical models that are available to amateur radio community for hf radio propagation forecasting. As indicated on the radio mobile online website, it uses digital terrain information and a mathematical model to simulate radio transmissions between two fixed sites or between a. Radio propagation along the grey line is very efficient. Acehf is propagation forecasting and modeling for amateur radio as well as for shortwave radio listening and general hf operation.
Rf propagation is the transmission of radio signals from a transmitter to a receiver. The online prediction service voacap online is easy. Digital hf prediction, reliability and other features of digital hf radio. Radio propagation prediction, radio coverage analysis and. Radio mobile rf propagation simulation software calculations. Jan 20, 2020 radio propagation radio propagation is the study of how radio waves travel from a transmitter site to a receiver site through the atmosphere.
One major reason for this is that the d layer, which absorbs hf signals, disappears rapidly on the sunset side of the grey line, and it has not yet built upon the sunrise side. Oct 25, 2019 radio mobile online is a radio wave propagation prediction tool dedicated to amateur radio. Radio mobile is propagation simulation software free to the amateurradio community. The class of an fm station may be retrieved from the fm query. Christian music toolbar 100% free listen to christian radio directly from browser. Antenna height above average terrain haat values for a particular fm or tv station can be obtained from the fm query or the tv query, or use the haat calculator. Irregular terrain model itm longleyrice 20 mhz 20 ghz if77. Voacap voice of america coverage analysis program is free professional highfrequency hf propagation prediction software from ntiaits, originally developed for voice of america voa. It provides a large 2500 x 1800 pixel screen map of the world which displays calculated results from sophisticated models, dx data and other sources of information. Kingston amateur radio club propagation prediction.
High frequency radio propagation current optimal frequency. Calculations radio mobile rf propagation simulation software. Also contains solar and radio propagation information applicable to ham radio including solar conditions, space conditions, online propagation tool, online sn to sfisfi to sn conversion tool, online auroraauroral activity to latitude conversion tool, and online kindex to signal noise conversion tool. Review of propagation prediction programs voacapbased. Radio mobile rf propagation simulation software radio. Hf propagation prediction software from ntia its, originally developed for. There are many models that predict rf propagation but the most known is the hataokumura model.
Radio propagation prediction software electronics notes. What does the radio communication term ray tracing describe. Our software features land mobile vhf, uhf 800mhz, microwave, etc. Though the original work is done by greg hand still remains the core of this propagation prediction model without much change, the core itshfbc software has been ported from dos to various modern operating systems.
Nautel has partnered with rf engineer roger coude, the author of radio mobile1 to provide simple, fast online vhfuhf coverage mapping and point to. World radio broadcasting stations explore various bc transmitting sites on. Radio mobile online online rf propagation simulation. On each day of the month at a given hour, there is a maximum observed frequency mof for a mode. Home propagation hamcap hf propagation prediction tool for amateur radio hamcap hf propagation prediction tool for amateur radio posted date. Near vertical incidence skywave nvis propagation, near vertical incidence skywave propagation is a form of radio wave propagation used on the mf and hf bands to provide radio communications and broadcasting coverage over short distances. Now the newly released probe 5 offers more powerful features, flexibility and speed, including the ability to take advantage of multiple program threads and dual core or. Demystifying hf radio propagation and modeling check out the acehf propagation software the latest is version 2. This page provides basic understanding of the principles of electromagnetic radiation, the structure of the earths atmosphere and solarterrestrial interactions necessary for a working knowledge of radio propagation. Dec 16, 2014 hf propagation prediction tool for amateur radio system requirements hardware. Calculations the hart of every rf simulation tool is the prediction model. Qradiopredict is an experimental software for vhfuhf propagation prediction and radio coverage analysis.
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