Ofcom — Amateur Radio
UK spectrum regulator — licences, frequency allocations, NoV
ofcom.org.uk/spectrum/amateur-radio
Propagation & Solar
SolarHam
Real-time solar data, X-ray flux, geomagnetic info, aurora alerts
solarham.com
Space Weather Live
Solar activity, aurora forecasts, SFI, K-index history
spaceweatherlive.com
VOACAP
HF propagation prediction — point-to-point path analysis
voacap.com
DX Clusters & Logging
DX Summit
Real-time DX spots, filters, alerts — the definitive cluster
dxsummit.fi
DX Watch
DX spotting, reverse beacon network, alerts
dxwatch.com
Club Log
Online logbook, DXCC progress, propagation charts, OQRS
clublog.org
QRZ
Callsign lookup, forums, logbook, awards
qrz.com
Satellites
AMSAT UK
UK amateur satellite group — news, frequencies, tracking resources
amsat-uk.org
N2YO — Satellite Tracking
Real-time satellite tracking, passes, predictions
n2yo.com
Shops
ML&S — Martin Lynch & Sons
UK's largest ham radio retailer — new & used gear, accessories
hamradio.co.uk
Emergency & Prepping
SOTA — Summits on the Air
Portable radio activations on summits — great for honing off-grid fieldcraft
sotawatch.org
POTA — Parks on the Air
Portable activations from parks — practice self-contained field operations
parksontheair.com
UK Preppers Forum
UK-focused prepping community — power, comms, food, water, planning
uk-preppers.co.uk/forum
The Prepared
Evidence-based preparedness — guides, gear reviews, practical skills
theprepared.com
Project NOMAD
Free offline server — Wikipedia, AI, maps, education. Runs on any PC, no internet needed
projectnomad.us
Mesh Networking
Meshtastic
Open-source off-grid mesh communication using LoRa radios — text, GPS, no infrastructure needed
meshtastic.org
AREDN — Amateur Radio Emergency Data Network
High-speed mesh networking on amateur radio bands — firmware, forums, documentation
arednmesh.org
Ham Radio Mesh Networking
Getting started guides, solar nodes, hardware reviews for AREDN mesh
hamradiomeshnetworking.com
SDR
RTL-SDR
Cheap software-defined radio dongles — tutorials, projects, news
rtl-sdr.com
AetherSDR
Multi-platform SDR application with built-in digital mode decoding
github.com/aethersdr
Airspy
High-performance SDR receivers — HF/VHF/UHF, wideband, low noise
airspy.com
SDRplay
RSP series SDR receivers — HF to microwave, Spectrum Studio software
sdrplay.com
WebSDR / KiwiSDR
Browse and listen to remote SDR receivers worldwide from your browser
websdr.org
Software
WSJT-X
FT8, FT4, WSPR, JT65, JT9 — digital modes for weak-signal DX
wsjt.sourceforge.io
Fldigi
Multi-mode digital modem — RTTY, PSK31, Olivia, Contestia and more
sourceforge.net/projects/fldigi
SDR Console
Powerful SDR software for Windows — wideband, waterfall, recording
sdr-radio.com
GQRX
Open-source SDR receiver for Linux/macOS
gqrx.dk
Antennas
Messi & Paoloni
Premium coax cables, connectors, POTA-friendly lightweight feedline
messiandpaoloni.com