vu3dxr.in

@vu3dxr
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675 Posts
The Silent Revolution: DRM+ Radio in the FM Bands https://vu3dxr.in/the-silent-revolution-drm-radio-in-the-fm-bands/
The Silent Revolution: DRM+ Radio In The FM Bands

Discover how DRM Radio in FM Bands revolutionizing global broadcasting in 2026. From xHE-AAC technology to "Green Radio" movement..DRM+ Radio in the FM Bands

DXR Electronics Bits
Building a Quarter-Wavelength Coaxial Collinear Antenna for 2 Meters https://vu3dxr.in/building-a-quarter-wavelength-coaxial-collinear-antenna-for-2-meters/
Build A Quarter-Wave Coaxial Collinear Antenna For 2M

Learn how to build a high-gain 2 Meter COCO antenna using quarter-wave coax sections for strong VHF performance. Coaxial Collinear Antenna for 2 Meters

DXR Electronics Bits
Build Your Own 90MHz Crystal Controlled FM Transmitter https://vu3dxr.in/build-your-own-90mhz-crystal-controlled-fm-transmitter/
Build Your Own 90MHz Crystal Controlled FM Transmitter

A crystal controlled FM transmitter is a radio frequency circuit that uses quartz crystal oscillator to generate a stable, precise frequency for FM transmission

DXR Electronics Bits

Want to build an FM transmitter from scratch? 🎙️📡

This simple circuit uses a single 2N2222A transistor and a 9V battery to create a functional FM band broadcaster. A great weekend project for learning about tank circuits and frequency modulation!

Schematic and build guide: https://vu3dxr.in/build-a-simple-fm-band-transmitter-circuit/

Build A Simple FM Band Transmitter Circuit

This simple FM band Transmitter circuit offers an excellent starting point for beginners can build this transmitter using common electronic components

DXR Electronics Bits

Build your own tiny radio station! 🎙️📡

This Mini FM Radio Transmitter circuit is a great way to learn about oscillators, tank circuits, and RF modulation. Simple components, 9V powered, and easy to tune.

Details and schematic here: https://vu3dxr.in/mini-fm-radio-transmitter/

Building A DIYMini FM Radio Transmitter Circuit

FM Radio Transmitter takes your voice from a microphone and turns it into a r signal. Then, this radio signal can be picked up by any standard FM radio nearby.

DXR Electronics Bits
Meshtastic Ham Radio Guide: LoRa Mesh Networking for Emergency and Everyday Use https://vu3dxr.in/meshtastic-ham-radio-guide-lora-mesh-networking-for-hams/
Unlock Exciting Adventures With Meshtastic Ham Radio!

Meshtastic ham radio brings LoRa-based off-grid mesh networking. Learn how it works, how to get started, and why emergency comms operators paying attention.

DXR Electronics Bits
Meshcore for Ham Radio: A Simple Start https://vu3dxr.in/meshcore-for-ham-radio-a-simple-start/
Meshcore For Ham Radio : Explore Exciting Possibilities

Explore Meshcore for ham radio: a low-power, LoRa-based mesh network for local messaging. A complete, impartial guide on hardware, flashing, uses, and limits

DXR Electronics Bits

If you’ve been hearing the buzz about Meshtastic but aren't sure how it fits into the Amateur Radio world, this comprehensive guide from VU3DXR is a must-read.

While some dismiss it as just for "preppers," hams worldwide are leveraging LoRa (Long Range) technology to build self-healing, infrastructure-independent mesh networks.

📖 Read the full guide here: https://vu3dxr.in/meshtastic-ham-radio-guide-lora-mesh-networking-for-hams/

#HamRadio #AmateurRadio #Meshtastic #LoRa #EmergencyComms #MeshNetworking #VU3DXR #MakerMovement

Unlock Exciting Adventures With Meshtastic Ham Radio!

Meshtastic ham radio brings LoRa-based off-grid mesh networking. Learn how it works, how to get started, and why emergency comms operators paying attention.

DXR Electronics Bits
The Ultimate Guide to HF Digital Dominance: FT8 vs FT4 vs FT2 https://vu3dxr.in/ultimate-guide-to-hf-digital-dominance-ft8-vs-ft4-vs-ft2/
Ultimate Guide To HF Digital Dominance: FT8 Vs FT4 Vs FT2

Comparision of FT8 vs FT4 vs FT2 digital modes. Learn about speed, sensitivity, and bandwidth to optimize your amateur radio DXing and contesting strategies.

DXR Electronics Bits
Multi Band Capacitor Loaded Shortened Dipole Antenna https://vu3dxr.in/compact-multi-band-capacitor-loaded-shortened-dipole-antenna/
Multi Band Capacitor Loaded Shortened Dipole Antenna - DXR Electronics Bits

Learn how to build compact multi-band HF shortened dipole antenna using a center-mounted adjustable capacitor. Includes frequency-capacitance chart, dimensions

DXR Electronics Bits