Google researchers demonstrated the ability to use GPS signal measurements from millions of anonymous Android mobile devices to map the ionosphere with high accuracy, potentially improving GPS navigation worldwide.
This GitHub repository contains the development of an APRS hub that transmits various sensor data like spO2, location, and altitude. The project uses Raspberry Pi, Tiny Circuit Python boards, and MQTT for data transmission.
The article discusses how ham radio has evolved in the internet age with modern technology, globalization, and digital modes transforming the hobby. It covers advancements in radio equipment, digital modes, computer logging, and the changing perspectives within the ham radio community.
An open-source device, kv4p HT, connects to an Android smartphone and turns it into a radio transceiver for about $35. It uses an ESP32 and transmits one watt, featuring APRS and scanning capabilities. The PCB is simple and affordable with a 3D-printed case.
Download 470 megapixel real-time images of Earth, captured every 10 minutes by the NOAA’s GOES-East satellite.
This article provides a guide on how to receive weather satellite images using SatDump.
This blog post announces the release of Flipper Zero firmware version 1.0, highlighting major new features like dynamic app loading, a redesigned NFC subsystem, JavaScript support, and various system improvements.
A new study published by Australian government researchers and Swinburne University found that good quality studies show no effect from radio waves on plants and animals, while poor-quality studies show an effect.
MeshCom is an open-source project for exchanging text messages, positions, and data using low-power, low-cost LoRa radio modules. It aims to create off-grid, mesh network communication systems.
A simple explanation of waveguides, transmission lines, and related topics using real-world examples and minimal math.
