Building a UK repeater map (and the tx/rx trap that nearly caught me)
Turning the RSGB ETCC's repeater CSV into an interactive map with distances, band and mode filters — and why the most dangerous bug in the whole project was a column name.
Skip Zone
Amateur radio for everyone.
latest posts
Building a coax loss calculator (and why ladder line still wins)
Why feedline loss matters more than most newcomers think, the math behind it, and a calculator that includes ladder line — not just the usual RG-58 and LMR-400.
Building an antenna calculator for HF wire antennas
How I built an HF antenna length calculator with SVG diagrams, multiband harmonic analysis, and 50 ohm SWR — covering dipoles, end-fed half-waves, and quarter-wave verticals.
tools
live
all tools →CW decoder
Real-time Morse decoder with Goertzel filter tone detection. Feed audio from your radio or microphone — adaptive timing with WPM range control.
liveCW trainer
Browser-based Morse code trainer. Set speed, length, and character set — listen and decode. No account required.
liveSatellite tracker
Track amateur radio satellites in real time — ISS, SO-50, AO-91, and more. Pass predictions with frequency and CTCSS info.
coming soon
Logbook
Lightweight QSO log with ADIF export. No account required. Data stays in your browser.
references
live
all references →Morse reference
Complete Morse code chart — letters, numbers, punctuation, prosigns, Q-codes, and common CW abbreviations.
livePhonetic alphabet
Convert callsigns and text to NATO phonetic spelling. Full reference chart included.
about
Skip Zone is written and built by MM7IUY ( Cam ) — a newly licensed Foundation holder in Scotland and software engineer by day. The name is inspired by RF propagation: the dead zone between a transmitter and where its signal returns to Earth. Most amateur radio content skips straight over the people who'd find it most interesting. This is for them.
more →