Specifications

15
S-Meter (12)
The S-Meter shows the current signal level and also provides the means to set squelch and auto mute functions. Squelch
level can be enabled clicking the bar in the S1-S9 (green) zone
with the left mouse button; any signal under the set value will not
produce output. The Auto Mute level is set clicking in the S9 -
S9+70 (red) zone; any signal higher than the limit will produce no
output. Both functions can be disabled by right clicking on the limits symbols (triangles painted directly on the bars).
Input Select (13)
The input select section allows a choice of signal source. The “AR-Alpha” button selects real time processing; by choosing
“Wav” and then “File” it's possible to replay any previously recorded session.
Playback – record (14)
By using the “Playback/Record” section, it's possible to control the recording and playback software features. The square
button stops both playback and recording; the triangular button starts playback; the circular button starts recording, asking for
path and filename before the actual start.
Note: When the USB-key license system is used and the program run directly from the USB key, be sure not to chose
the USB key to store your recording data!
While playing a recorded file, a yellow progress indicator bar will fill up. Users can jump backward and forward in the recording
by just clicking on the bar. It is also possible to repeat a segment, simply by highlighting it with the mouse (i.e. clicking on the
beginning and holding the left mouse button down, moving the mouse pointer to the end of the desired segment and finally
releasing the mouse button). The software will repeatedly decode the selected segment until another click on the bar is issued
or the stop button is pressed.
I/Q recording takes about 700MB of disk space per minute, which is 42GB per hour, or 1TB for 24 hours. Make sure you have
plenty of disk space available depending of the desired length of the recording.
Secondary spectrum view (15)
In the secondary spectrum view, users can fine-tune the selected filter and enable Notch and AM Rejection filter.
Filters Bandwidth
There are 8 predefined bands.
The 240 kHz filter is used in
WFM demodulator mode only.
PBT
PassBand Tuning allows you to
fine-tune the filter passband
using the mouse wheel or
dragging the filter edges (using
the left mouse button). The right
mouse button allows dragging
both edges at the same time.
Notch Filter
If Notch is selected, double clicking on
any frequency will enable the filter.
Attenuation is tunable using the mouse
wheel. Filter center can be dragged with
the left mouse button.
AM Rejection
AM Rejection can be enabled by holding
SHIFT and double clicking on the
desidered frequency in the secondary
spectrum window. A red line will show
the current setting. The filter can be
disabled holding SHIFT while right
clicking on the secondary spectrum
window.