Logarithmic scale is more convenient usually, but it needs more computer resources. Analogously, the " Setup > View > Logarithmic oscillogram scale" option or Ctrl-Z hotkey change oscillogram window scale. The " Setup > View > Logarithmic spectrogram scale" option or Alt-Z hotkey switch spectrogram window between linear or logarithmic scale. This level is used as minimal level of detector threshold.
Gnuradio morse decoder manual#
If the " Setup > Interface > Enable manual auto-threshold limit" option is enabled, noise level is set manually. First line shows current level of threshold, second line shows estimate of noise level. In this mode two horizontal red lines are shown. The button " AutoThr" turns on a mode of automatic tuning of the detector threshold under the level of a signal. In the presence of a strong signal the threshold can be increased. The threshold needs to be established at some level above the noise. A red horizontal line shows the threshold of the detection of signal presence. The bottom window is oscillogram of the signal. The " OnTop" button puts CwGet in front of all windows. The " Wheel tuning speed" control defines speed and direction of frequency changing during wheel rotation. If tuning transceiver via Omni-Rig is enabled, mouse wheel changes transceiver radio frequency, in another case wheel changes audio frequency. The " Use mouse wheel for tuning" option enables using of mouse wheel for tuning. The " Show Omni-Rig Setup" button is used to activate Omni-Rig setup dialog. The " Use RIG" option is used to select a rig controlled by Omni-Rig.
Gnuradio morse decoder install#
The Hamport software ( ) also uses this software interface and install it automatically. Tuning is made via Omni-Rig software interface ( ), which should be installed separately. In this case auto-tuning by RIT is impossible. Take to attention that not every transceiver has programmable RIT. Tuning can be made by RIT or by VFO according selected option. Auto-tuning is made after click on spectrogram or ruler below. In this mode transceiver radio frequency is changed to consist RX frequency to TX frequency. The mode of automatic transceiver frequency control can be switched on by the " Setup > Tune RIG by" menu. It jumps to the peak frequency of the strongest signal after detecting a pause of more than eight "dots" in the current signal. The button " GotoMax" jumps to the peak frequency in the bandpass, The " AutoGTM" button switches on the automatic mode of "GotoMax". But this action is not made after click on the ruler under spectrogram. When the option " Setup > Interface >AFC at mouse click" is selected CwGet immediately adjusts the RX frequency to the nearest station after every mouse click on the spectrogram regardless of the "AFC" button state. User-selected frequency is shown at spectrogram by short red line. maximal deviation from last user-selected frequency. Second number is global deviation in hertzs, i.e. maximal deviation from current frequency. The first number is local deviation in hertzs, i.e. The numbers to the left of the AFC button determines the limits of AFC. The " AFC" button (auto frequency control) adjusts the long red line (working frequency) to the closest peak frequency. To move a visible part of spectrogram to left or right drag it by mouse with Alt key pressed. " Alt-7" hotkeys change frequency scale of spectrogram. To change the TX marker position, click on the desired frequency by right mouse button (or by left mouse button with "Ctrl" key pressed).
It is used to help with zero-beat tuning. The short thick black line is the marker of TX frequency. To change the working frequency, click on the desired frequency (probably a peak). Ruler under this window shows frequencies of sound spectrum.The vertical red line in the top window shows the working frequency of the filter. In the top window the current spectrum of a signal (blue line) and a peak detector of spectral components (green line) is shown. The working area of the program is divided into three windows, the sizes of which can be changed by the user by dragging the borders. It is a software morse decoder that really work! No additional hardware required you need only receiver and computer with a sound card. It can work as narrow-band sound DSP-filter also.
Gnuradio morse decoder code#
Simple software to handle devices connected to LPT portĪ program to decode morse code (CW) via sound card to text. A tool for monitoring popular web-cluster service from OH9W/OH2AQ Radio Club
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