Radio Communication Technology Blog

Khanfar Spectrum Analyzer: A Free RTL-SDR Tool Suite Worth Knowing : A detailed look at the Khanfar Spectrum Analyzer free RTL-SDR tools covering real-time FFT, wideband scanning, CFAR , IQ recording, and radio direction finding

Meshcore for Ham Radio: A Simple Start : 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

Build a High-Sensitivity Regenerative Receiver with 2N7000 MOSFET : DIY Circuit for 2N7000 regenerative receiver with air-core and ferrite coils. Includes band coverage tables, regeneration theory, and practical tuning tips

FT2 Digital Mode in 2026 — The Fastest Thing on HF and What the Community Really Thinks : FT2 digital mode reviewed in 2026 — 3.8-second cycles, real shack experiences, technical trade-offs, and whether it deserves a place in your station

Build Your Own Indoor Antenna for 7 MHz HF Band : Discover how to build a compact indoor antenna for 7 MHz using a simple coil-based design. Ideal for amateur radio operators with space constraints