Foundations: Start Here

You can absolutely do this

Getting your first amateur radio license feels like a big mountain when you are standing at the bottom looking up. Here is a secret that shrinks the mountain a lot: every question that can be on the test, and every answer, is written down ahead of time — and all of them live inside this course. You are not being asked to invent anything or guess at surprises. You just need to get to know a set of questions you are already allowed to see.

You do not need to be great at math. You do not need to know science yet. You need a little patience and a place to start, and this page is that place. Whenever a word is new, we will say it in plain words first, and only then give you its proper name in bold. If reading gets tiring, press Listen at the top and let the page read itself to you.

What ham radio is, and why it is fun

Imagine a walkie-talkie — the kind you might use with a friend across the yard. Now imagine one that can reach across your whole town, across the country, and sometimes all the way up to astronauts flying overhead. That is the idea behind this hobby. People build, fix, and use their own two-way radios to talk to each other for fun, to learn how things work, and to help out when storms knock out the phones.

The proper name for this hobby is amateur radio (the people who do it are often called hams). "Amateur" here does not mean bad at it — it means you do it for the love of it, not for a paycheck. Because radio signals fly invisibly through the air and could crash into each other if everyone shouted at once, there are polite rules about who may talk and where. To show you know the rules, you take a small test. When you pass, the government gives you a license (that is just permission to transmit) and a call sign (your own personal radio name made of letters and numbers, like KD9XYZ). Once you have those, you are on the air.

Electricity, explained with water

Radios run on electricity, and electricity sounds mysterious — so let's trade it for something you can actually picture: water moving through a pipe. Think of a pump pushing water around a loop of pipe.

• The strength of the push is the first idea. A stronger push moves water harder. In electricity that push is called voltage, measured in units called volts.
• Next, how much water is actually moving past a point each second — a fat, fast stream is a lot, a tiny trickle is a little. In electricity that flow is called current, measured in units called amps.
• Last, imagine a spot where the pipe gets narrow and squeezes the water so less can get through. Anything that fights the flow like that is called resistance, measured in units called ohms.

Put it together and you have the whole picture: push, flow, and squeeze. One more idea: the water can only move if the pipe makes a complete loop back to the pump. An electrical loop like that is called a circuit. Break the loop — the way a light switch does when you flip it off — and everything stops. That is all a circuit really is: a complete loop.

You will also hear two short words for the two kinds of electricity. Electricity that flows steadily in one direction, the way it does from a battery, is called direct current, or DC. Electricity that wiggles quickly back and forth, the way it does in the outlets in your walls, is called alternating current, or AC.

Big numbers and tiny numbers, with no fear

Radio deals with some giant numbers and some teeny ones, and writing out long strings of zeros is a pain. So we use short nicknames that stand in for all those zeros. The proper name for these nicknames is metric prefixes, and you already know several of them:

• kilo means one thousand (a kilometer is 1,000 meters)
• mega means one million (a megapixel is 1,000,000 tiny dots)
• milli means one one-thousandth — a tiny sliver (a millisecond is a tiny sliver of a second)

Switching between these is not scary math. It is just sliding the decimal point — the same way one dollar is the same money as one hundred pennies. Nothing changes about the amount; you are only counting it in bigger or smaller pieces. The lessons show every step whenever it actually matters, so you never have to do it in your head.

What a radio wave is

Drop a pebble in a calm pond and you see rings spreading outward — those moving ripples are waves. A radio signal is a wave too, an invisible one racing through the air at the speed of light. Two things describe any wave:

• How often the ripples go by — that is, how many pass a spot each second. That count is called frequency, measured in a unit called hertz (Hz). Radio waves zip by so fast that we usually count them in millions per second, and one million hertz is one megahertz (MHz).
• How long one single ripple is, measured from the top of one wave to the top of the next. That length is called wavelength.

Here is the one big idea, and it works like a seesaw: when the frequency goes up, the wavelength gets shorter, and when the frequency goes down, the wavelength gets longer. The two always move in opposite directions. There is even a quick way to find a wavelength in meters: take the number 300 and divide it by the frequency in MHz. For a signal at 150 MHz, 300 ÷ 150 = 2, so its wavelength is about 2 meters. That is exactly why hams call that range the "2 meter" band.

The radio spectrum and bands

All the possible radio frequencies, lined up from lowest to highest, are called the radio spectrum. Picture a very long piano keyboard, with low notes on one end and high notes on the other. We chop that keyboard into chunks and name each one. A named chunk of frequencies is called a band.

• The lower frequencies (very roughly 3–30 MHz) are called HF, short for high frequency. Signals here can bounce off a layer high in the sky and travel enormous distances.
• The middle group (about 30–300 MHz) is called VHF, short for very high frequency — great for clear, local chats.
• The higher group (about 300–3000 MHz) is called UHF, short for ultra high frequency — it slips nicely around buildings in town.

As a new Technician you get to use lots of the VHF and UHF bands right away, which is perfect for talking around your area. Often you will do it through a repeater — a helper radio sitting up high on a tower that listens to your little handheld and instantly re-sends it with much more power, so two people miles apart can chat as if they were close.

Reading a formula the easy way

A formula looks scary, but it is only a recipe that tells you how to find one number using other numbers. The most famous one in radio is Ohm's Law, which says:

Voltage = Current × Resistance

You do not need algebra to use it. There is a friendly trick — the magic triangle. Picture a triangle split into three boxes, with voltage on top and current and resistance side by side in the two bottom corners.

• Cover up the one you are trying to find with your finger.
• If the two letters still showing sit side by side, you multiply them.
• If one letter sits above the other, you divide the top by the bottom.

Example: a circuit has 2 amps of current and 3 ohms of resistance, and you want the voltage. Cover the voltage box. The other two are side by side, so multiply: 2 × 3 = 6. The answer is 6 volts. That is the whole trick — and the lessons walk through every example this slowly. (You will meet a twin of this triangle for figuring out power, measured in watts, later on; it works exactly the same way.)

How the exam works, and a gentle study plan

The Technician exam is 35 multiple-choice questions. To pass you need 26 correct (74%). There is no Morse code anymore, so there is no tapping or beeping to learn. Every question comes from a public list called the question pool, and the current one is the 2026–2030 pool from the national group that writes it (the NCVEC). Everything you need is already in this course.

Here is a calm plan that works:

1. Work through the 10 lessons in order — read or listen, and don't rush.
2. After each lesson, take its short practice quiz. Getting one wrong is good: it points right at what to look at again.
3. Once you finish all ten, take full 35-question practice exams until you score around 80% or better, several times in a row. Use the flashcards to drill anything that won't stick.
4. Find a test session near you, take the real exam, and collect your call sign. Then get on the air!

You can do this

Thousands of kids and grown-ups who started with zero background — no math, no electronics, none of it — are licensed and chatting on the radio today. They were nervous at the start too. The only difference between them and someone who never tries is turning the page to lesson one. You have already done the hardest part by starting. Take it slow, be kind to yourself, and let's begin.

Whenever you want a quick refresher, the course home keeps all of this in one place.