Friday, January 30, 2026

Mini-Radio Firmware V3 Adds RTTY/CW Decoding and EiBi Integration

Mini-Radio Firmware V3 Adds RTTY/CW Decoding and EiBi Integration: Mini-Radio Firmware V3 by H. J. Berndt introduces built-in RTTY and CW decoding along with EiBi schedule integration, enhancing SI4735-based portable receivers.

Wednesday, January 28, 2026

Noise Cancelling Condenser Microphone

Kill the noise, keep the voice. 🤫🎙️

The VU3DXR Noise-Canceling Condenser Mic is a game-changer for clear communication. Perfect for #HamRadio, streaming, and voice-overs. High sensitivity meets professional noise rejection.

Get yours here: https://vu3dxr.in/noise-canceling-condenser-microphone/

#VU3DXR #RadioGear #AudioTech #Microphone

Build a High-Sensitivity Regenerative Receiver with 2N7000 MOSFET

Just came across a very nice DIY project on building a high sensitivity regenerative receiver using a 2N7000 MOSFET. The design shows how a simple regenerative circuit, using positive feedback and a single active device, can achieve impressive sensitivity on medium wave and shortwave bands.


The article explains coil winding, tuning, regeneration control and practical construction tips, making it ideal for radio amateurs, students and experimenters who want to understand classic receiver principles with modern, easily available parts. It is a great weekend build for anyone interested in analog RF, homebrew receivers and learning how regeneration can rival much more complex superheterodyne designs in sensitivity when carefully adjusted.


The full project is available at https://vu3dxr.in/build-a-high-sensitivity-regenerative-receiver-with-2n7000-mosfet/