Director Software

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SWR Director Features

The SWR Director is a Microsoft windows based application which provides many features, such as remote control and chart plotting of SWR and Return Loss (RL), written exclusively for use with the AEA SWR-121 HF and AEA SWR-121 V/U SWR analyzers manufactured by AEA Technology, Inc. Many of these features are simply not attainable using the analyzer alone!

Take a look at the SWR Director Operating Instructions.


Analyze an entire frequency band or just a single frequency

  • For frequency band analysis, select the start and end frequencies, and then select a step size. As the SWR values are being calculated, an SWR plot will appear in the program chart area. The individual SWR and RL values are accessible through a scrolling data list box to the left of the SWR chart plotting area.
  • For single frequency analysis, just enter a frequency. The SWR and RL values are displayed.
  • A step up/down feature assists with single frequency analysis. From an initial frequency, the step up/down feature will increment/decrement frequency by a "step size", then return the SWR value at this new frequency.

Command the SWR analyzer remotely

  • Change an analyzer's width setting using the application's zoom in/out function.
  • Easily enable/disable plot smoothing.
  • Easily enable/disable SWR scaling.
  • Set the step size to 1kHz, 5kHz, 10kHz, 20kHz, 50kHz, 100kHz, 200kHz, or 500kHz, depending upon the analyzer model selected.
  • Step the analyzer center frequency up or down based upon the step size currently set.
  • Place the analyzer in the hold (freeze the display) mode.
  • Resweep the analyzer display.
  • Move the center frequency up or down to the lowest SWR value within the analyzer display

Manipulate multiple charts

  • Display up to five SWR plots at one time. This feature allows easy comparison of different "runs" of an SWR analysis, especially handy during antenna tuning. Each of the five plots can be selectively turned on or off.
  • Clear any one of the five SWR charts with a single button press. This allows you to start again from scratch.
  • Designate an "Active" chart. The active chart is the only chart changed during frequency band analysis; the non-active charts will be unaffected. To differentiate between the plots, the line width of the active chart is displayed slightly thicker than the other lines.
  • Zoom and pan within the SWR chart plotting area.
  • Display labels showing the SWR values for the active chart.
  • Enter a title to describe the SWR chart, with or without a date and/or time.
  • Quickly update the date/time for a chart.
  • Turn on/off the background color gradient for the SWR chart plotting area.
  • View chart in 3D mode, handy for viewing slight differences between similar charts.

Customize program settings

  • The program settings can be customized to your environment, e.g., the comm. port used, step size, analyzer type, charts displayed, active chart, etc. These preferences can easily be saved so later sessions can continue with the same settings by pressing the Ctrl+y keys or select the Settings|Save Settings menu item.

Return Loss (RL) values

  • During the process of gathering SWR values, SWR Director also computes a corresponding RL values. For a frequency band analysis, the RL values can be viewed in the data list box. These values can also be plotted. By pressing the F3 key, the plotting area changes to display RL verses frequency pair values. All the charting features described for SWR charts apply to RL charts, e.g. labels, panning, zooming, scaling

Document SWR charts

  • Print the SWR plotting area to your printer. A printer setup facility is also included.
  • Save SWR chart plotting area as a bitmap, meta, or enhanced meta file--useful for historical storage and incorporation into end user reports or documents.
  • Save the active chart to a file for retrieval at a later date.
  • View or Print a report of the active chart’s raw data values

Use shortcuts for frequently used commands

  • An Analyzer toolbar group's common analyzer commands.
  • A Chart toolbar groups common chart features.
  • Speed keys allow for quick execution of common program commands. See the Help|Keyboard menu for more details.

Create SWR charts manually

  • Can't get a PC near your antenna during analysis? SWR data can be recorded during your analysis and then, at a later time, manually entered using the SWR Director to create an SWR chart plot of your data.