XIEGU G90 Collection

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Showing posts with label laboratory. Show all posts
Showing posts with label laboratory. Show all posts
17 April 2026

Voice Activated Squelch

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  From time to time I use to set the dial of my HF radio to some frequencies where voice QSO’s are expected - like local nets or WWF/SOTA/...
15 August 2025

Baofeng DM-32 Desktop Charger YPT-C21A

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 Baofeng DM-32 desktop "charger" isn't a proper charger but a desktop stand with a charging indicator. The charging circuit is...
25 July 2025

A GNSS Disciplined CTCSS, DCS and DTMF generator based on ESP32

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Let me present a project to both show off and because it might be useful to others, a GNSS disciplined CTCSSDCS and DTMF generator.   Wh...
16 July 2025

Debugging ESP32 Timer Interrupts: A Tale of API Compatibility

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  The Silent Signal Generator   Have you ever spent hours debugging code that should work but doesn't? Recently, I faced this exact c...
30 June 2025

Transmițătorul DSB „El Silbo” - AA1TJ

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  Michael Rainey, cunoscut sub indicativul AA1TJ, este un cunoscut operator radioamator american, inginer și pasionat de homebrew minimalist...
27 June 2025

Arduino Based Repeater Controller

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 A request from a fellow ham made me revisit an old project, and Arduino based repeater controller. This lead to an iterative process to up...
16 January 2025

Xiegu G90 - O defectiune tipica

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 Micul transceiver Xiegu G90 este unul foarte indragit de radioamatorii carora le place sa iasa in natura.  Forma sa compacta, cei 20 de W i...
28 November 2024

433 MHz LoRa SAW Bandpass Filter

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 The LoRa network that a team of radio amateurs in Bucharest is testing is - for various reasons - deployed in the 433 MHz ISM band. A check...