How to translate Morse code? Morse Expert - Android app

Do you want to know what the beeping you caught means but you don't know Morse code? Help comes from the Morse code decoder Morse Expert for Android phones. A similar decoder was created many years ago for Windows under the name CW Get! Their purpose is identical: translating Morse code into text.

Morse Expert comes from Alex VE3NEA, the author of a groundbreaking program CW skimmEr. This application also uses for decoding Morse code the same algorithms. It is therefore suitable for receiving weak, fluctuating, or interfered signals as occur on amateur radio frequencies.

Morse alphabet

The Morse code alphabet is a group of symbols used in telegraphy. It encodes characters of the Latin alphabet, numbers, and special characters into combinations of short and long signals. Colloquially, they are referred to as dots and dashes. The alphabet encoding was invented by American inventor, painter, and sculptor Samuel Morse. He made the first telegraphic connection between Washington and Baltimore as early as 1844. The original alphabet was further improved in 1918.

Letters and numbers of the Morse alphabet

For the transmission of Morse code, it is possible to use an acoustic signal (whistling), an electric signal (telegraph), an optical signal (flag signaling, recording on paper using dots and dashes). The most common usage today is in amateur radiotelegraphy. The communication speed ranges from 60 to 250 characters per minute.

Morse code translator

Thanks to the simplicity of the code, it is also possible to create a Morse code translator. It is software that converts text into telegraphic signals when transmitting. These signals are transmitted, so-called keyed, at a set speed. The software ensures the correct length of individual symbols and spaces between them.

The software Morse code translator is more demanding - it must determine the transmission speed, be able to adapt to it, eliminate interfering signals, and decode Morse code into written text. Morse Expert is a Morse code translator for Android.

Features of Morse Expert

The Morse Expert application displays the low-frequency spectrum in the range of 200-1200 Hz and decodes in the range of 300-1100 Hz at a CW keying speed of 12-45 WPM.

DownloAd Morse Expert

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Using Morse Expert

The application has minimal settings. It can also use a signal captured by the smartphone's microphone, but it is recommended to use a cable connection between the receiver and the smartphone. This method eliminates unwanted sounds that the microphone picks up or echo.

In the application, there is a choice between general text (General Text mode) and radio amateur text (Ham Radio QSO mode). It is distinguished by the fact that it highlights the terms and signs used in radio amateur connections.

The second setting is frequency locking. By default, Morse Expert automatically tunes to the strongest signal in the received acoustic spectrum. However, this may not be ideal if there are multiple signals in the spectrum. Morse Expert then switches between them.

The received signal in the spectrum is marked with a green triangle. If we click on it, it changes color to yellow, thus disabling the automatic change of the received signal. By clicking again, we unlock Morse Expert's automatic selection of the received signal. This is a weakness of the application - clicking on such a small element is quite demanding.

Is Morse Expert functional?

Yes, the Morse code decoder can translate the received signal into text form. It does not match the quality of the human ear, but for occasional identification of 'what that beeping means,' it is a handy application.