Second Generation Microwave Frequency Analysis

Microwave Pro 2 uses the FCC's ULS database to identify usable BAS and Part 101 (950 MHz, 2 GHz, 6 GHz, 7 GHz, 11 GHz, 13 GHz, 18 GHz and 23 GHz) microwave frequencies in the U.S.A. and to examine paths over terrain elevation plots while acknowledging interference to and from other microwave links.  The program now uses the exact methodology found in the terrain based, industry standard, NSMA (National Spectrum Management Association) OH Loss model. This standard propagation model is used across the Nation by microwave coordinators for path loss predictions. Microwave-Pro 2 also contains the TIA-EIA Telecommunications System BulletinTSB10-F methodology as an alternative model. When supplied with the parameters for a proposed path, Microwave Pro-2 can quickly load all stations that have a potential interference relationship and calculate Carrier to Interference (C/I) ratios. The FCC's COALS (Cable Operations and Licensing System) and CARS (Cable television Relay Service) databases are included with Microwave-Pro and are including in our database update service.

A mergeable list of contact information for paths within the "keyhole" radius from the proposed path can be generated to be used for the 'prior notification' process.

The screen below shows the study of a single link on 945.5 MHz.  The C/I In and C/I out columns show the carrier to interference ratio in dB for "outgoing" and "incoming" signal relationships, while the "Margin" columns show the difference between the desired C/I ratio and the available C/I ratio.


One of the most important new features of version 2.0 is the ability to define a microwave path as a bi-directional system (in previous versions of the program the forward and return path for such a system had to be considered independently). When a bi-directional path is loaded from the U.L.S. database Microwave-Pro 2 will automatically load the return path as well.

Dynamic C/I Objective Calculation

Now C/I ratios based on frequency separation and bandwidth can be calculated and applied. The program includes an advanced algorithm that will determine an adjusted C/I objective for non-standard situations. This is useful in situations when two path frequencies are not exactly the same and not exactly a full channel apart.

Another critically important feature is the program's ability to modify critical propagation model parameters and to consider separate short term and long term fading scenarios. 

The paths below show the spatial relationships between the new path, D to E, and the existing path from A to B (Both shown in green). Possible interfering paths are shown in red between A to E and D to B. The arrows indicate the transmission directions.

The Microwave-Pro 2 A to E path profile, shown below, graphs the path over terrain.  The terrain elevation is graphed in red, while the path is plotted in green and the Fresnel zone in orange. The  user may select the profile of either the proposed path or the interfering paths simply by clicking one of the buttons on the Microwave Path Information screen. 

A microwave antenna pattern can be selected from the many included patterns available to the user:

In the screen below we show the Scala PR-950 antenna has been selected for the transmit antenna of our reference transmitter. 

Reference receive patterns can be selected in the same manner.

The receive and transmit patterns of microwave transmission systems in the ULS database are automatically applied according to the registration in the FCC's ULS database. If the user clicks the "Contact Info" tab, the contact information is displayed as is shown below:

Now, Microwave-Pro, version 2, contains our classic integrated polygon mapping package applying the same mapping database and techniques that are used by Probe 4 and FMCommander. Coordination studies can be mapped showing some, or all, of the paths considered in the study. The map study below shows the 'new point' study capability. Choice of this study allows the user to identify the impact of wind farms and other structures on microwave paths. 


Microwave-Pro 2 also has a built in link budget system analysis tool that can be used to generate complete link budget report.  The 'wizard' based interface allows the user to enter path information, transmitter power, antenna gains, and other system gains and losses.  The program will calculate the EIRP, path loss, fade margin, and provide a minimum recommended fade margin. A sample link budget report may be downloaded here (PDF format).

Key Features of the new Microwave-Pro-2 include:

1.) Uses the NSMA OH Loss Model or TSB-10F Loss Model.

2.) Studies now include outward and return paths and coordination analysis in a single study. 

3.) Integrates V-Soft classic polygon mapping.

4.) Calculates C/I ratios that consider terrain obstruction.

5.)  Plots terrain profiles of all protected and interfering paths.

6.)  Includes a large pattern library for specifying many common antenna patterns.

7.)  Gives a graphical representation of both protected and interfering path geometry.

8.)  Can search both license and application microwave databases.

9.)  Performs frequency searches for the radio, TV BAS and Part 101 bands to determine available frequencies.

10.)  Generates mergeable address information needed for PCN coordination letters.


Upgrades for existing users of  Microwave-Pro 1 are available.

 For more information on Microwave- Pro call us at 1-800-743-3684 or email "info at v-soft.com".


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