2 Amateur ham CW Morse code practice oscillators 1.1.1

2 Amateur Ham Cw Morse Code Practice Oscillators 1.1.1 For Android APK Download

About this app:

No ads, nags, or in-app purchases. No internet connection required. Fully offline app.

Practice sending International Morse code with straight lever and iambic paddle CW Morse code practice oscillators app for Android smartphones and tablets. This app DOES NOT interface with your ham radio to provide a keying device.

Each practice oscillator translates International Morse code into Latin letters, Arabic numerals, punctuation, CW prosigns, and characters , ch, , , , and in real tim e as you practice.

Practice sending Morse code with a straight lever oscillator. Settings include WPM, show/hide Morse code/text, choose sidetone 400Hz-800Hz. Adjust the WPM so that you can produce well formed DITs and DAHs at a comfortable speed.

Practice sending Morse code with an iambic paddle oscillator. Simply touch down on the DIT and DAH paddles instead of pinching, squeezing, or flinging the paddles. Settings include WPM, CW weight ratio, reverse paddles, show/hide Morse code/text, choose sidetone 400Hz-800Hz. Touch and hold both paddles to cycle between DIT and DAH and feel the iambic rhythm.

Here is a brief instruction on using an iambic paddle key to send Morse code:

Press and hold the Clear Code/Text button to adjust CW and Text label font sizes.

You may use a real straight key or iambic keyer with this app by connecting it to your Android device via an easily modified USB mouse.


This app may be of interest to amateur ham radio QRP and QRO operators, and CW Morse code or telegraph enthusiasts, preppers and survivalists.

If you would like to also practice sending Japanese Wabun CW Morse code, then please see my Japanese Morse code practice oscillators app:


For 10-30 WPM CW Morse code training, please see my Koch Morse code trainer apps:

Read more

App Video

App Information

Version Rating APP Vote Size
1.1.1 4.4 15 -
Requirement Updated Installs Developer
2.1 and up September 10, 2019 500+ KG9E
High Speed Download