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CW decoder

Started by Emmanuel SV1BTL, Mar 01, 2026, 01:40 PM

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Emmanuel SV1BTL

CW decoder has been added to the version 1.7.0 and CW bandwidth filters have been fixed. Now CW mode is in DSB. It uses the same window for text as FT8 window does.
CW decoder is as much accurate as could it to be (not perfect). It measures audio frequency and WPM.
Try to tune near to 650-750 Hz audio for better results. If there are too many mistakes during decoding, try to refresh it by clicking CW button again, so decoder to restart. Easy to understand that when two or more CW signals being together, it would be hard to decode!...

Only these files is needed to be replaced and recompile frontend, without to restart server:

frontend
├── src
│  ├── App__analog_smeter_.svelte
│  ├── App__digital_smeter_.svelte
│  ├── App.svelte
│  ├── App__v2_analog_smeter_.svelte
│  ├── App__v2_digital_smeter_.svelte
│  ├── audio.js

73, SV1BTL Emmanuel

F1NSK

Hello Emmanuel

Compiled on my Phantom
Works fine when at the other side the CW is computed...
Don"t worry, all CW decoders give the same result.
Only MRP40 is a little better.
You can try on my Phantom , my SNR is better than your's.

One more time , congratulations for this fine business

73's

F1NSK

Works very fine on high bands with low noise.
80% decoded.
Perhaps a narrow IF filter at 250 HZ will be a must....

73's

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