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Ude Cyrillic errors C# encoding detection

https://sudonull.com/ude-cyrillic-errors-c-encoding-detection

Analysis of Ude library errors when recognizing MacCyrillic vs Windows-1251 in C#. Heuristic fix on strange bytes. Code, examples, limitations for developers.

WSPR protocol: Python encoding of callsigns

https://sudonull.com/wspr-protocol-python-encoding-of-callsigns

Study the WSPR design for HF radio: 4-FSK modulation, data packing into 50 bits, code examples for callsigns and locators. Implement signal propagation analysis.

Reversing BCD4 Queue Display Protocol

https://sudonull.com/reversing-bcd4-queue-display-protocol

Analysis of BCD4 encoding and carry-checksum in the electronic queue display protocol. Python code, packet structure, web integration. For developers.

Architecture for 9 trillion records on a server

https://sudonull.com/architecture-for-9-trillion-records-on-a-server

Learn how to store trillions of Milky Way stars in sparse files with Z-encoding. Scalable system without indexes for middle/senior dev. Implement it yourself.

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