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, retaining all of the theory as put forth by john lloyd, george haydon, donald lucas and larry teters in the 19751985 timeframe with modifications which were suggestedapproved by george. Hfprop by g4ilo hfprop can show you, in an instant, the directions in which propagation is likely to be possible under given conditions on any specified date. Getting started with winlink and winmor winlink global. You may recognize me from tv shows ive done for the history channel and the weather channel. The only mf amateur band, 160m, will not be discussed, nor. Understanding hf propagation reports ve2xip editions.
This link is listed in our web site directory since monday jun 17 2002, and till today ace hf propagation prediction software has been followed for a total of 9389 times. Ethics and operating procedures for the radio amateur pdf in several languages, iaru. The surface wave propagation depends on currents which flow in the ground. These changes then affect hf radiowave propagation by altering parame ters such as the maximum usable frequency muf over hf. Understanding hf propagation reports the very first thing i noticed when i got interested with propagation was a vast number of websites displaying charts and grids related to hf propagation conditions, but i didnt really understand them at first at first. 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. Winlink is an allvolunteer project of the amateur radio safety foundation, inc. Review of propagation prediction programs voacapbased. The downloads made available through links on this page contain software developed by ntia. An introduction to hf propagation steve foy n4foy paul white n4wgl upper pinellas amateur radio club tech program series. Download its hf propagation at free download 64 other.
Trusted for over 23 years, our modern delphi is the preferred choice of object pascal developers for creating cool apps across devices. 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. Review of propagation prediction programs and beacon. Files to download general information, awards, software, ham links. For prcticm clcultions of the statistical ef fects of hf propagation in the. Arsfi, a nonprofit public benefit corporation if you use winlink email, or correspond regularly with someone who does, please donate to arsfi.
Ive been featured in popular science magazine, and i do regular space weather. Get and try file restore program that can easily restore deleted files as well as restore shift delete files without puting hard efforts. Ace hf system simulation and visualization software, v2. Berkeley introduction i i have to agree there is a lot of information out there on the internet. Interactions among ionosphere propagation, hf modems, and data protocols. Irregular terrain model itm longleyrice 20 mhz 20 ghz if77 wave propagation. Groundwave propagation occurs, for example, when you contact another station across town on an hf band. Acehf system simulation and visualization software, v2. File restore program to perform the easy and secure restoration of your deleted files.
The slice is a set of step distances from the center the chosen location together with the height of terrain at each step. Unless otherwise stated, all originally authored software on this site is licensed under the terms of gnu gpl version 3. Time of day time of year band in use solar flux em radiation geomagnetic conditions solar particulate output the path itself over land. The rest of information is useless and it doesnt interest anybody.
The very first thing i noticed when i got interested with propagation was a vast number of websites displaying charts and grids related to hf. The main category is propagation tools that is about propagation prediction software for ham radio. The end result is an icon on your desktop named its hf propagation. There are more types of measurements about the suns activities than. Pdf hf, vhf, and uhf systems and technology researchgate. Read book solution manual for antenna and wave propagation. Institute for telecommunication sciences resources radio propagation software high frequency voacap propagation model. About ace hf propagation prediction software the resource is currently listed in in a single category. Lf propagation a topic he is very well placed to explain. At hfvhfuhf, the effects of line length and component.
Finding space to install a large hf antenna, thats what. This ebook, with its many illustrations, will supply some of the most viable hf antenna solutions. Free solarterrestrial data displayed on your web page or site, updated every 3hours. Book two hf antennas for limited space pdf gumroad. What additional challenge is there to hf communications besides. Hf propagation models from ntia its windows9598nt 32bit hf propagation models from ntiaits. The basic concepts behind hf propagation using the ionosphere are easy to understand, and a study of it is not only fascinating, but also very useful for anyone involved in hf radio communications in any way. Download fulltext pdf download fulltext pdf aspects of hf radio propagation article pdf available in annals of geophysics annali di geofisica 5234 june 2009 with 176 reads. This includes the 80, 40, 30, 20, 17, 15, 12, and 10 meter bands. 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. Ntia does not make any warranty of any kind, express, implied or statutory, including, without limitation, the implied warranty of. First, we depend on ionization of the upper atmosphere.
Hf propagation prediction programs and how to use them. This presentation examines hf propagation hf region spans 3 to 30 mhz. Ionospheric propagation is the main mode of radio propagation used in the mf and hf portions of the radio spectrum. Understanding radio wave propagation can mean the difference between making and missing a contact to a particular part of the world. After answering questions at the 2009 and 2010 newark hamfests it dawned on me that these features could be bundled together into a single pdf, so giving the reader a good grounding in lf and hf propagation. Antenna theory analysis and design 3rd edition solution manual by balanis hy guyz, this is a solution manual of the book. Determining characteristics of hf communications links using. Department of commerce, 2011 the electromagnetic spectrum, from 31. In this report background information on a montecarlo radio simulation methodology is given. Institute for telecommunication sciences resources radio propagation software radio propagation software. Scattering function of the fluctuating ionosphere in the hf band. Hflink hf interoperability standards automatic link. Now supports area coverage maps with jim watsons voaareaplot.
We are told that the features were well received and as a result i have managed to persuade the rsgb to allow me to put them together into a single document, which is now freely available for amateurs worldwide to download. The existence of the atmosphere changes the propagation characteristics but is not essential for the mode. Amateur com munications of up to 50 miles are typically possible via ground wave. Let me put out a few remarks that might help your understanding of propagation. Hf terrain analysis hfta is a powerful but easy to use tool but requires a set of data files which describe a series of 2d slices of terrain around a chosen location. Usable hf frequencies page refreshed every 20 minutes use the indicated color red, yellow, green, blue, white, etc. Acehf propagation prediction software resource detail. Any white bubble indicates no suitable frequency or high absorption. Get the most updated and accurate gold rate forecast, we have the most thrustworthy gold rate forecast predictions and information currently we have a gold rate forecast warning for all members. Hf propagation forecast, free hf propagation forecast software downloads. Review of propagation prediction programs and beacon managers on. Hf propagation prediction programs and how to use them steve nichols g0kya. Ionospheric simulator this program simulates a hf link, using sound card and win95 by. Propagation mail list reflectors several to choose from includes subscription info qst hf propagation prediction charts muf, best propagation paths and times pdf files from the arrl.
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