HamIQ.net
Free lessons, flashcards, and full-length practice exams for the Technician, General, and Extra class FCC amateur radio license exams — plus antenna, grid square, and line-of-sight calculators.
Technician
409 questions
General
423 questions
Extra
598 questions
Lessons
Read a short lesson for each subelement, grounded in the actual question pool, before you start quizzing yourself.
Flash Cards
Study questions one at a time, pick an answer, and track your progress and most-missed questions per set.
Practice Exams
Take a randomized practice exam at the real exam length, then review your score and every missed question.
Callsign Lookup
Look up the current FCC license for a US amateur radio callsign — name, location, license class, and grid square.
Grid Square Calculator
Convert a latitude/longitude into a Maidenhead grid square, or use your current location — handy for contest exchanges.
Line-of-Sight Calculator
Estimate your radio horizon and signal range from antenna height, frequency, power, and antenna type — plotted as a range ring or directional beam wedge on a map.
Antenna Design
Dimension calculators for dipole/vertical, Yagi beam, J-pole, and Moxon antennas, built to your target frequency.
Takeoff Angle Calculator
Estimate the elevation takeoff angle and directionality of a vertical, dipole, or Yagi/beam antenna, plotted as pattern charts and on a map.
Cable Loss Calculator
Compare feedline loss and power delivered across common coax types for your frequency, length, and power.
Clock
Live local time and UTC (Zulu) side by side, handy for logging contacts and scheduling nets.
Shack Builder
Build out a radio, cable, meter, and antenna as a signal chain to see expected performance and total cost.
AREDN Network Planner
Place mesh nodes on a map, pick radios and antennas, and estimate which links are likely to work.
HF Propagation Predictor
A band × time heat map showing when to operate and which band to use between your QTH and a target station.
Can I Work It?
A quick chance-of-contact check between your QTH and a target station, factoring in your power, antenna, and height.
Grid Lookup Tool
Click anywhere on a map to get its Maidenhead grid square, lat/lon, nearest city, and local time vs. UTC.
Repeater Lookup
Find nearby repeaters using your location, a point on a map, or by state/city.
Satellite Tracker
Predict the next pass of a ham satellite for your location, with a live ground track and footprint map.
Satellite Pass Predictor
List the next several passes of a ham satellite for your location — rise, overhead, and set times with azimuth/elevation.
Yes — HamIQ is free to use, with no paid tiers or subscriptions. It's supported by ads and affiliate links.
Technician, General, and Extra — the three FCC amateur radio license classes — each with its own lessons, flashcards, and practice exams.
Yes, a free account lets HamIQ save your quiz progress and most-missed questions across study sessions.
HamIQ pairs short lessons for each subelement with flashcard drills and full-length, randomized practice exams, and tracks which questions you tend to miss so you can focus your remaining study time.
These lessons and questions are a study aid — not a substitute for the official ARRL license manual or the current FCC Part 97 rules.
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