January 2026 DXpeditions: What's On the Air
A roundup of active and upcoming DXpeditions for January 2026, including the landmark KP5 Desecheo activation and operations from the Maldives, Kenya, Grenada, and more.
Articles
Technical guides, tutorials, and in-depth articles covering all aspects of amateur radio.
Filter: DXpedition DX HF rare DXCC field-day filters interference hf 20-meters diy sdr beginner hardware digital-modes ft8 psk31
Building Helical Resonator Filters for Field Day Isolation
A summary of practical HF helical resonator filters that can help isolate multiple 20-meter stations during Field Day operations.
tutorials
Getting Started with Software Defined Radio
An introduction to SDR technology for amateur radio operators, covering basic concepts and popular hardware options.