swharden / wsprsharp Goto Github PK

WSPR Inspector should run in the browser (the user should not have to install anything)

The code generator at https://swharden.com/software/wspr-code-generator/ produces wrong results for many call signs.

It simply pads spaces in front of the callsign until we have 6 characters:
https://github.com/swharden/WsprSharp/blob/main/src/WsprSharp/Encode.cs#L85

The encoding however demands that the third character is always a number, and only the first and the last three characters can be spaces/padding:
https://github.com/swharden/WsprSharp/blob/main/src/WsprSharp/Encode.cs#L36 ff

Therefore the padding only works correctly for 2x3 callsigns (AA0AAA - no padding needed) or 1x3 callsigns (A0AAA - single space padding in front bringing the number to position 3).

For all other callsigns, it pads incorrectly. Real life example described here https://www.qrpforum.de/forum/index.php?thread/14781-wspr-code-generator-gel%C3%B6st/ (DL3PB encoded as " DL3PB" which is not encodable, and the resulting bit pattern happens to be another valid callsign, "F0UPB")

• Add functionality to play the WSPR transmission as audio
• Add the ability to save the transmission as a WAV file
• Add a timer so the user can start it at 2-minute intervals