' 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. 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
