Linux Morse Code Decoding Software

demorse:
demorse is a Morse code decoding application for the console. It detects the receiver's audio output via the computer's sound card, using simple dsp techniques, and then decodes the mark/space sequence into characters which are printed on the console screen. demorse has some tolerance to bad operator "fists" and noise or interference, however it could be improved by using more sophisticate audio signal detection. demorse can measure and adapt to the Morse transmission's speed within the range of 10-30 words per minute, the default starting speed being set to about 20 wpm.

Manual Read more details on-line or download demorse's manual.

PackageDownload source package of demorse.

xdemorse:
xdemorse is a GTK+ graphical version of demorse, using the same decoding engine. It has an FFT-derived "waterfall" display of the incoming audio signal's spectrum, as well as a 'scope-like display of the audio detector's output and status of the mark/space discriminator ("slicer"). xdemorse also has CAT for the FT-847 and this can be used to net the receiver's frequency to the incoming signal, by clicking near its trace in the waterfall display.

Manual Read more details on-line or download xdemorse's manual.

PackageDownload source package of xdemorse.

w1aw This is a screen capture (thumbnail) of xdemorse decoding a Morse code bulletin from W1AW, the ARRL's Hiram Percy Maxim memorial station in Newnington, Connecticut. It was received about 0300Z (local morning) on 7047.53kHz on the 11 April 2006 using an FT847 transceiver and a 10-160m G5RV antenna.