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RadcomSearch is an easy to use windows program to search the register of radiocommunications licences (Radcom) kept by the Australian Communications & Media Authority (ACMA), extract matching entries, and from those extractions calculate possible RFI interference levels at a single site or across a map grid.
Originally written to search the old-style RADCOM CD-ROMs (CSV version) purchased from ACMA, version 2.0 of RadcomSearch was updated to provide access to the new SPECTRA RRL files which may be downloaded free from the ACMA website.
RadcomSearch is not intended to be a stand-alone and rigorous assessment of radio frequency interference (RFI) issues. RadcomSearch simply allows an initial desktop assessment, which may help to identify areas requiring further more detailed analysis nd actual on-site measurement.
The main functions of RadcomSearch are divided into several sections, which are accessible as tabs on the program window.
Setup tab allows the user to define the locations of the ACMA database files, which are not distributed with RadcomSearch. These include the old-style RADCOM CD-ROM files (if used), the new style SPECTRA RRL files, and/or the RadDEM digital elevation model files. The Setup tab also allows the user to select which digital elevation model (DEM) database to use for calculations, either the built-in ITU-R DEM, or the more accurate RadDEM database.
Data Map Grid tab allows the user to extract various basic DEM and climate parameters, across a grid of map points, and save them to a map grid file for plotting with a spreadsheet or an appropriate mapping program. Map grid files may be produced from terrain height data from the currently selected DEM, or may consist of one of several climate parameters from the built-in ITUR climate models, such as average temperature, rain rate, etc.
Extraction tab allows the user to search the ACMA database of frequency licenses and extract matching records to a CSV extraction file. The extraction file may then be viewed and edited with a text editor or spreadsheet (such as Excel or OpenOffice Calc). Extracted records may then be used to calculate interference power flux density (PFD) levels at a single site or across a map grid.
Conversion tab allows users to convert various RadcomSearch output files to other formats. For example, an extraction file may be converted to a GIS map data file to allow the locations of antenna sites and links to be mapped, using Google Earth, MapList-Flat, etc. Also, extraction files, or single site PFD files may be converted to TxPlan compatible carrier files, to allow the signal frequencies and levels to be plotted in our TxPlan program.
Path Profile tab allows the user to extract a path profile of terrain heights between two specified locations, using the currently selected DEM. The Lite unregistered program will save the path profile heights to a CSV file which the user may open and chart in a spreadsheet. The registered PRO version of the program will plot the path on screen, calculate path loss for a specified frequency, and allow the user to save the image or CSV path data.
PFD Single Site tab allows the user to calculate interference PFD levels at a specified location from a list of transmitters in an extraction file. Calculations take account of terrain shielding using the selected DEM, and climate induced propagation effects such as refraction and ducting. Results are saved to a CSV file which may be viewed and further manipulated using a spreadsheet program.
PFD Map Grid tab allows the user to calculate interference PFD levels, from the transmitters in an extraction file, at each point across a specified map grid. Results are saved to a map grid file which may be plotted with a spreadsheet or an appropriate mapping program.
You will need:
a PC running Windows XP or Windows 7, or later.
40MB free hard disk space for the program.
Screen resolution set to at least 1024×768.
A copy of the latest Spectra RRL files from the ACMA web site.