![]() ![]() Use the optional narrow-band DSP audio filter to help filter out background noise. The audio filter works for tone frequencies from 300 to 2400 Hz. Please do not try to decode tones outside this range. The Morse code WPM (words per minute) detection speed is automatically adaptive from about 8 to 40 WPM, and can be locked to the current estimated WPM dot speed. You can also manually set the WPM code speed if the automatic speed detection guesses incorrectly. A QRQ High Speed WPM mode setting allows decoding much higher WPM speeds in the range of 30 to 80 WPM. Please aim your iPhone microphone at the Morse Code sound source so that the iPhone's noise cancelling microphone doesn't cancel it out. You can see if sound is getting to the iPhone by seeing a peak in the spectrum display. A Morse Code Decoder based on WB7FHC's Simple Morse Code Decoder. Please use the manual settings if automatic decoding does not adjust to the frequency, WPM. The CW decoder uses the same basic LM567 circuit designed by Budd Churchward WB7FHC which is connected to an Arduino Nano. I have made some software changes to suit my circumstances. These include a 'live' adjustable farnsworth setting, a much faster sweep tuning function by reducing the tuning range, and changes to the general operation and LCD layout. ![]() or background noise threshold level properly. If they know Morse code you can hide the text. Text to Morse Just type letters, numbers and punctuation into the top box and the Morse code will appear in the bottom box with a '' if the character cannot be translated.ĭecoding will not work if the audio filter or WPM are set incorrectly, or there is a lot of background noise or room echoes above the threshold setting. This is not a great tool for learning Morse code as looking at the dots and dashes does not help. Please see the help file on the HotPaw website for hints as to how to solve decoding issues. ![]()
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