DIY Antennas, QRP, SDR & Ham Radio Projects from VU3DXR
Explore the world of RTL SDR on VU3DXR. This tag features technical guides for beginners and experts, from setting up SDRSharp and GNU Radio to decoding SSTV and ADS-B signals. Learn about hardware mods like the v3 dongle, HF direct sampling, and using RTL-SDR for satellite weather imaging.
Software Defined Radios have made high-performance spectrum analysis accessible to anyone with a laptop and $30 to spare. This guide covers every worthwhile SDR from cheap RTL dongles to dedicated HF receivers — with software picks, antenna advice, and practical projects to get you on the air fast.
Every vessel larger than 300 gross tons is legally required to broadcast its identity, position, speed, and heading every few seconds on VHF radio. With a $25 RTL-SDR dongle and free software, you can receive, decode, and map those live transmissions from your living room — no licence required, no nautical background needed. This guide walks you through the AIS standard, the hardware and software stack, antenna options, and how to contribute your decoded data to global ship-tracking networks.
Have you ever wondered how tracking websites like FlightAware and Flightradar24 get their real-time data? The secret lies in a global network of volunteers who feed aircraft position data using surprisingly affordable hardware. In this comprehensive guide, I’ll show you how to set up your own aircraft tracking station using an RTL-SDR dongle and contribute data to multiple flight tracking services simultaneously.
Learn how to receive high-resolution LRPT weather images from Meteor-M2 satellites using an RTL-SDR, 137 MHz antenna, and SatDump decoder. Complete guide covering pass prediction, signal reception, and image decoding for satellite enthusiasts
FM Bandstop Filter for RTL SDR The given FM band stop filter is nothing more than a simple Band stop filter for the frequency range of 88-108Mhz. FM Broadcast transmitters transmit at high power and can cause overloading and intermodulation problems on simple receivers like RTL-SDR due to its wide open front end. The said […]