KG9E Amateur ham radio Android apps and games.
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Alphanumeric Morse code customizable trainer.
Learn to hear the Morse code alphabet and numbers. ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789?./ or define a custom list to study. Select WPM 10, 15, 20, 25, 30, 35, 40.

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Amateur ham radio Q-Code Quiz free Android app.
Test your knowledge of commonly used Q-signals in ham radio with this free Android learning app.
Choose from 10, 15, 20, 25, 30, 35, and 40 WPM.

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10, 15, 20, 25, 30, 35, 40 WPM CW Morse code trainer.
Freely move among 10, 15, 20, 25, 30, 35, and 40 WPM and learn to copy Morse code, CW prosigns, and CW abbreviations.

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20 WPM Amateur radio Morse code CW trainer.
Teaches you to receive and send CW Morse code at 20 WPM similar to the Koch method and focuses on listening to Morse code rather than memorizing dots and dashes. Includes CW abbreviation and CW prosign RX and TX training.

10, 15, 20, 25, and 30 WPM versions available on Google Play.

Download the 10 WPM CW Morse code trainer free Android app.
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Ham radio CW Morse code practice oscillator horizontal lever (straight key).
Provides a software straight lever practice oscillator for practicing CW Morse code on your Android device. This practice oscillator translates International Morse code into Latin letters, Arabic numerals, punctuation, CW prosigns, and characters á, ch, é, ñ, ö, and ü in real time as you practice.

Also available as a combo app with an iambic paddles oscillator (see below).

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Amateur ham radio CW Morse code practice oscillator iambic paddle.
Provides a software iambic paddle practice oscillator for practicing CW Morse code on your Android device. This practice oscillator translates International Morse code into Latin letters, Arabic numerals, punctuation, CW prosigns, and characters á, ch, é, ñ, ö, and ü in real time as you practice.
Also available as a combo app with a horizontal lever (straight key) oscillator (see above).

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和文モールス練習
Wabun Japanese Morse code CW amateur ham radio practice oscillators.
Gives you both straight lever and iambic paddle ホレ Wabun Japanese Morse code CW practice oscillators for Android. Each oscillator translates International Morse code into English with CW prosigns and Wabun Morse code into Japanese kana characters in real time as you practice.

This app is translated into both English and Japanese languages.

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16+ Tone DTMF Generator Keypad 1234567890*#ABCD and 1750Hz with CTCSS.
This app will give you a 16+ tone DTMF (Dual-Tone Multi-Frequency) keypad plus a 1750Hz tone burst button for European repeater operation and the ability to generate and save custom DTMF sequences, as well as set the duration and tone/silence ratio.

Additionally, 52 CTCSS frequencies 67.0 Hz - 254.1 Hz are included.

This app works in both portrait and landscape modes.

To familiarize yourself with this app, here are a few things to try.

Official DTMF pad of RFinder Android Radio
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Grid square calculator QTH maidenhead locator tool.
QTH Locator app calculates Maidenhead Grid Square from GPS latitude and longitude or custom coordinates with up to 5 pairs of resolution. With a data connection you can display a map of your GPS location or from custom grid square/coordinates. This app works in both portrait and landscape modes.

To familiarize yourself with this app, here are a few things to try.

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KG9E games for Android.
No ads, nags, social media, or in-app purchases in any of these games.
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4x4 Solo Mini Chess board brain puzzle games.
Using the movement rules of Chess, try to capture all pieces with the most points.
Try the free version, and read the freeappsforme review.

Try KG9E's Knight's Tour Puzzle Games free download on Google Play.

Top Puzzle Games To Play During Quarantine
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Tap it Fast reflex reaction game free download
Free Android game. Tap as many of the correctly colored circles as you can in 20 seconds. You gain 0.5 seconds for each board you clear. Can you score over 200 points with 90% accuracy?

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Classic Math Puzzle Brain Teaser Puzzle Games
This free Android game app includes a collection of classic puzzle and memory games to help your mind focus, retain, and solve. Games include: Lights Off, 3D Lights Off, Towers of Hanoi, Cows and Bulls/Mastermind, Copy Cat Simon, and more!

Free Download from Google Play

Knight Moves Chess puzzle games for Android
Based on the classic Knight's Tour problem. Using the movement rules for the Knight in Chess, your task is to tour the board with the Knight. This free game has many variations on 5x5, 6x6, 7x7, and 8x8 board sizes.

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