## Radio Mobile - Free Radio Planning Software

My radio app

Radio wave distribution is a very complex process. It is impossible to exactly predict how dunes will spread and what values we will calculate at some particular point. Therefore we incorporate some mathematical models to be able to approximate radio propagation and to calculate field strength values in accordance with predefined probability.

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The particular propagation model, which is based on electromagnetic principle and on statistical examination of both ground features and r / c measurements, predicts your median attenuation of the r / c signal as a aim of distance and the variability of the signal soon enough and in space. Reproduction models define shape and formulas. With such model we can forecast propagation in irrelavent distance from the transmitter.

Employing curves and numerical formulas manually is definitely a tough task. As a way to automate and speed up such calculations many software tools were developed. Normally, radio organizing software packages are used by broadcasters, mobile operators and also radio frequency authorities. As a result of complexity and few potential customers, the price of this kind of software package can be quite high. But there is one particular exception to this rule.

Radio Mobile is really a software tool for radio stations propagation calculation. Mcdougal has decided to publish that under the "freeware" license which means that the software is openly available on the web. This software is primarily dedicated to amateur radio stations, however, it can be in addition used in other areas such as broadcasting and expert mobile communications.

Calculations are based on the Longley-Rice propagation model. This is a common purpose radio distribution model for frequencies between 20 Megahertz and 20 Gigahertz. In order to use the software you also need terrain model data. This details are needed for calculations associated with effective heights which can be needed to perform reproduction calculations. You can find a number of terrain model data sources on the web. They provide free DTM (Digital Terrain Model) data that is enough to start dealing with the Radio Mobile.

Radio stations Mobile supports many fancy features like possibility to use DTM in numerous formats (DTED, SRTM), also in many layers with different solution, possibility to add map pictures in raster formatting (BMP, JPEG, GIF, TIFF, PNG), possibility to determine interference between r / c and lots of functions to customize the view.

Basic strategy for use consists of going into radio stations with all variables (if they are not came into yet) and calculation of the coverage. Right here you have a lot of options to customize the calculation and examine. Results can be preserved for later use. It is also simple to define calculation stage for coarse information to save some time.

Pertaining to result display it will always be not enough to display it on the gray scale DTM. You would probably like to see it on some guide. For this purpose you can use any map picture with known coordinates. The software allows you to enter coordinates for each picture so that you can display it appropriately over the DTM.

A very useful function is the calculation of interference in between radio stations. You determine protection ratio as well as minimum field energy for calculation and the software marks interference area with defined color.

The software is additionally very useful for micro wave link planning. It enables you to display ground profile between a pair of points, display involving optical visibility through the point and calculations of link details. Although this software is free and dedicated pertaining to amateur radio it is usually very useful tool regarding daily radio conversation tasks.