Scanning

The scan window provides the operator with the ability to quickly scan the radio bands and produce a visual representation of station activity. Click on any control in the image below for detailed help:

Scan start and stop

Use the Start button to begin the scan. During scan, the receiver is tuned sequentially to each frequency in the selected range and the signal strength is recorded. The band scope is updated as each data point is acquired. When the scan is complete, the old tuning frequency is restored and the receiver will return to normal operation.

The scan is performed with the current AGC and filter settings. The frequency the receiver is tuned to is used as the center frequency for the sweep.

To stop a scan in progress at any time, use the Stop button.

To mute the receiver during the scan operation, use the Mute button in the main window.

Scan range

Use the Range buttons to select the desired sweep width. The current selection is displayed at the bottom right corner of the band scope display.

If the range is changed while a scan is in progress, the scan will be restarted.

Scale mode

Use the Scale buttons to select between linear (Lin) or logarithmic (Log) scales.

The selection between Lin and Log can be done at any moment, without having to stop or restart the scan.

Display style

Sample points in the band scope window may be displayed either as a continuous single line or as bar histogram. To choose between these, use the Style buttons.

The selection between Line and Bars can be done at any moment, without having to stop or restart the scan.

Cursor lines

Two cursors can appear in the graphic spectrum area: a red one and a blue one.

The blue cursor line is displayed at the mouse pointer position when the last is located inside the graphic area. It can be used to determine which frequency corresponds to a given point of the spectrum. The frequency value is displayed above the cursor line, in the upper part of the display.

The red cursor shows the current tuning frequency of the receiver. The shaded area at both sides of this cursor represents the current receiver bandwidth, according to the selected filter.

You can click on any point of the spectrum to reposition the red cursor, and to consequently tune the receiver to that frequency. You can also drag the red cursor around to listen to the different stations on the band.

Closing the window

Use the Close button to close the scan window. Any scan in progress will be stopped and the receiver returned to normal operation.