SETUP DETAILS

Measuring the infrasound frequency of a strong signal in one of the infrasignal radio modes is easy. Touch the INFRASIGNAL ON CHART >> INFRASIGNAL ON SCOPE >> MEASURE FREQUENCY buttons. The radio takes a sample of the signal and displays the frequency in green text in a window at the bottom of the screen.

If the signal strength decreases and a message appears in the window “WAITING FOR A STRONGER SIGNAL”, you can touch the FORCE MEASUREMENT button. This allows frequency measurements to be made all the way down to the noise level. The frequency measurements will be displayed in yellow text to indicate that the measurements are less accurate.

When the signals are not strong, it is recommended that frequency measurements be made using the 1 CHANNEL mode. The first step is to determine which channel displays the strongest signal. Touch the 16 CHANNEL SCAN button and make a full scan.

When you see which channel has the strongest signal, touch the 5 CHANNEL SCAN button and use the left CHANNEL button to back up. After the scan starts again and pauses in the channel with the strongest signal, touch the 1 CHANNEL ON CHART >> 1 CHANNEL ON SCOPE >> MEASURE FREQUENCY. The display will change to show the signal on the scope and an accurate frequency measurement in green text in the window below the scope.

Again, you may want to measure the frequency of a much weaker signal that falls below a level that ensures an accurate measurement. As before, a message appears in the frequency measurement window, “WAITING FOR A STRONGER SIGNAL”. Touch the FORCE MEASUREMENT button. The message disappears. The text in the frequency measurement window will turn yellow to indicate that the frequency measurements will be less accurate than those with the stronger signal.