IYT theory · free

IYT VHF Radio Operator practice test: exam questions and theory

200 questions in 10 topics. Each topic has an article that explains the rules the questions ask about, with drawings; the app asks the questions, explains every answer and brings your mistakes back until you get them right.

200questions
10topics
30exam questions

The mock exam: 30 questions spread over every topic, 45 minutes, pass at 70 %. Size, time and pass mark are the app’s defaults, not an official rule.

Topics

  1. 1. The VHF set & its controlsA VHF is simple to work once you know what each control does and what the set needs: a healthy supply, a sound antenna and a clear voice. · 6 min read · 20 questions
  2. 2. Channels & rangeEvery channel has a job. · 7 min read · 20 questions
  3. 3. Routine calls & radio disciplineRoutine calls follow one pattern, the same in every port and every language. · 5 min read · 20 questions
  4. 4. Phonetic alphabet & procedure wordsA radio voice is thin, clipped and often half lost in noise. · 6 min read · 20 questions
  5. 5. DSC & MMSIDigital selective calling lets one radio ring another, the way a phone does. · 7 min read · 20 questions
  6. 6. Distress — MAYDAYMAYDAY is the one call that stops all other traffic and sets a rescue going. · 7 min read · 20 questions
  7. 7. Urgency & safety — PAN-PAN, SÉCURITÉNot every problem at sea is a MAYDAY. · 6 min read · 20 questions
  8. 8. Search & rescue communicationsA distress call sets a rescue in motion, and every station that hears it has a part in it: mostly to listen and keep quiet, sometimes to answer, relay or go. · 5 min read · 20 questions
  9. 9. GMDSS, EPIRB, SART, NAVTEX & AISGMDSS, the Global Maritime Distress and Safety System, gets a distress alert ashore without anyone having to hear your voice, and brings safety information to you. · 6 min read · 20 questions
  10. 10. Licences & regulationsA marine radio is licensed twice: the set through the boat, the operator through a certificate. · 5 min read · 20 questions
Practise it

Practise by topic with the reason after every answer, take a timed mock exam, and see your progress per topic. Free, no sign-up, in the browser or in Telegram.

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