A vast, fully-offline amateur-radio engineering toolbox — calculators, design labs, references and gear galleries across Antennas, Feedlines & RF, Circuits and Reference. Antenna lengths & matching, a 2D/3D radiation-pattern lab, a live grid compass, coax loss & SWR, RF power & propagation, circuit & filter design, band plans, 300+ tips, and nearly 200 hand-drawn vector illustrations of tools, parts and connectors.
Dipole (with k-factor), 1/4 & 5/8 verticals, ground-plane radials, loops, Yagis, end-fed and random wire — lengths in meters and feet.
L-network, Pi-network, quarter-wave transformer, balun/unun ratios and stub matching, with the formulas shown.
An interactive radiation-pattern visualizer — azimuth, elevation and a clear 3D lobe with directivity, gain, takeoff angle, front-to-back and mismatch loss.
A compass that rotates with your phone and points the great-circle beam heading from your grid to any target grid.
Coax loss, velocity factor, SWR & return loss, RF power (dBm/W/ERP/EIRP), free-space path loss, radio horizon and Fresnel zone.
Antenna A/B comparison, a receiver noise-floor estimator, and practical NanoVNA & tinySA guides.
Ohm's law, reactance, LC resonance, RC/LC, Pi/T, bandpass and Butterworth filter design, resistor/capacitor/inductor codes, an AWG table, a 555 timer and a live RLC lab.
Filterable band plans for ITU regions 1-3, unit converters, comparison tables, and great-circle grid tools.
Nearly 200 hand-drawn, theme-aware illustrations of tools, components, connectors, antennas and rig controls — each with notes and a tip.
Searchable categorized tips, 40+ formulas, a rich glossary and a constants reference — plus an (i) explanation on every panel.
A clean theme in light or dark, adjustable font size, weekly tips, and one-tap image export of any panel or diagram. Works 100% offline.
From SWL newcomers to advanced builders — practical engineering at your fingertips, no account or internet required.
Yousuf AL Balushi (A41UX) started his Ham Radio journey in November 2024 as an official member of The Royal Omani Amateur Radio Society (ROARS).
Ham Engineering joins the Unixeer™ portfolio alongside Ham Logging, Ham Satting, Ham Learning and Ham Gaming — a vast, fully-offline engineering toolbox built from the ground up for amateur radio operators of every level.
"The right tool, in your pocket — at the bench and in the field." 🔧