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SPLAT! (short for an RF Signal Propagation, Loss, And Terrain analysis tool) is a
GNU GPL The GNU General Public Licenses (GNU GPL or simply GPL) are a series of widely used free software licenses, or ''copyleft'' licenses, that guarantee end users the freedom to run, study, share, or modify the software. The GPL was the first ...
-licensed terrestrial
radio propagation model Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another in vacuum, or into various parts of the atmosphere. As a form of electromagnetic radiation, like light waves, radio waves are affect ...
application initially written for
Linux Linux ( ) is a family of open source Unix-like operating systems based on the Linux kernel, an kernel (operating system), operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically package manager, pac ...
but has since been ported for
Windows Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...
and
OS X macOS, previously OS X and originally Mac OS X, is a Unix, Unix-based operating system developed and marketed by Apple Inc., Apple since 2001. It is the current operating system for Apple's Mac (computer), Mac computers. With ...
. SPLAT! can use the Longley-Rice path loss and coverage prediction using the Irregular Terrain Model to predict the behaviour and reliability of radio links, and to predict
path loss Path loss, or path attenuation, is the reduction in power density (attenuation) of an electromagnetic wave as it propagates through space. Path loss is a major component in the analysis and design of the link budget of a telecommunication system. ...
. SRTM filenames refer to the latitude and longitude of the southwest corner of the topographic dataset contained within the file. Therefore, the region of interest must lie north and east of the latitude and longitude provided in the SRTM filename.


History

Development started in 1997 by John A. Magliacane, KD2BD. The latest version 1.4.2 was published in 2014. In 2020 several authors started the development of a completely reworked version which was not published yet. The authors introduce multithreading, georeferenced outputs (
GeoTIFF GeoTIFF is a public domain metadata standard which allows georeferencing information to be embedded within a TIFF file. The potential additional information includes map projection, coordinate systems, ellipsoids, datums, and everything else nec ...
) and
metrication Metrication or metrification is the act or process of converting to the metric system of measurement. All over the world, countries have transitioned from local and traditional Unit of measurement, units of measurement to the metric system. This ...
as defaults.


References

{{Reflist


External links


SPLAT! Website
(From Wayback Machine, as StumbleUpon is defunct.)
TV Technology article Surfin': SPLAT That Path Online
Stan Horzepa, WA1LOU, discussed the use of SPLAT! in an ARRLWeb feature article.
W5GFE SignalServer WebSite
An online interface for SPLAT! used by amateur radio operators worldwide.
Microwave Radio Path Analysis
An interactive CGI for SPLAT! covering the United States. Radio frequency propagation Free communication software Amateur radio software for Linux Amateur radio software for Windows Amateur radio software for macOS