RST Decoder 3.1.0

This app serves as a Morse code decoder that utilizes input from the microphone. It functions as a valuable Morse code practice tool, allowing users to verify the accuracy of their keying in real-time. The decoding accuracy is dependent on the signal-to-noise ratio, with optimal results achieved under good S/N conditions. However, decoding performance may suffer in the presence of poor S/N levels or extremely slow/fast signals.

Typically, a sequence of 5 to 10 characters is necessary for Morse code speed synchronization. Users are advised to fine-tune the input signal to transition smoothly from level 6 to level 7. Adjustments to various parameters should be made based on reception quality.

Additional Functions:

• Incorporates a BPF-based decoder and introduces a new decoder utilizing FFT technology, offering flexibility based on user requirements.
• Introduces an Automatic Frequency Detector (AFD) feature within the BPF decoder, enabling automatic setting of the BPF by simply pressing the AFD button.
• The FFT-based decoder automatically tracks the strongest signal within the band through AFD and AGC mechanisms. Users can also lock AFD/AGC parameters by pressing the Lock button. Note: A slight time lag of approximately 1 to 2 seconds may occur during AFD tracking.

Control Parameters:

1. Audio Input Level
2. BPF ON/OFF
3. BPF Center Frequency
4. BPF Bandwidth
5. CW Speed Control ON/OFF
6. CW Speed Control (Low, Mid1, Mid2, or High)
7. Delete All Decoded Text
8. Real-time CW Signal Display
9. Input Signal Recording/Playback Function

Note: Audio output post BPF processing enables use as an AF-CW filter.

URL of App Demo Video:

• View App Demonstration Video Here