Ham Radio: Amateur Extra
Every band, every mode
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You can always create as many flashcards as you like, free of charge.
If you would rather use a ready-made deck such as Ham Radio: Amateur Extra, we ask you for a small sum in return. For €2.99 once you get 571 flashcards, sorted into 10 categories and with notes that add to them. You start out learning instead of typing, and whatever you find missing later you add yourself.
- Cards
- 571
- Categories
- 10
- Price
- €2.99
Free, no account, no ads
What is in this deck
With this deck you learn the full question pool for the US Amateur Extra licence, word for word, with the answer that counts as correct.
Amateur Extra is the last exam, and it asks the theory the other two only touched: transmission lines, filters, modulation mathematics. Fifty questions, thirty-seven right, and no band is closed to you afterwards.
The pool behind it holds 571 questions once the ones needing a diagram are set aside, and every one of them is here with its correct answer. It applies 2024 to 2028 and carries no copyright, by the decision of the body that writes it.
Those 28 diagram questions are the only omission, and it is a deliberate one: a card without its figure would ask something it never shows.
The categories decide what comes up: start with “Amateur Practices” alone and add the rest when you are ready.
What you learn
- Every question of the Amateur Extra pool, with answer
- The rules that only an Extra class licensee needs
- Propagation, antennas and transmission line theory
- Digital modes, signals and emission characteristics
- Test equipment, circuit analysis and safety
The categories
10 categories sort the 571 cards. You can filter by category and take on what is due right now.
- Amateur Practices
- Antennas and Transmission
- Circuit Components
- Commission's Rules
- Electrical Principles
- Operating Procedures
- Practical Circuits
- Radio Wave Propagation
- Safety
- Signals and Emissions
Where the content comes from
The cards follow Amateur Radio Question Pool, Element E, published by National Conference of Volunteer Examiner Coordinators. As of valid 2024 to 2028.
What you get
Here are three of the 571 cards you get when you buy the deck.
Question
Why is it not legal to transmit a 3 kHz bandwidth USB signal with a carrier frequency of 14.348 MHz?
Answer
The upper 1 kHz of the signal is outside the 20-meter band
Note
FCC rules: 47 CFR 97.305, 97.307(b).
Question
When using a transceiver that displays the carrier frequency of phone signals, which of the following displayed frequencies represents the lowest frequency at which a properly adjusted LSB emission will be totally within the band?
Answer
3 kHz above the lower band edge
Note
FCC rules: 47 CFR 97.301, 97.305.
Question
What is the highest legal carrier frequency on the 20-meter band for transmitting a 2.8 kHz wide USB data signal?
Answer
14.1472 MHz
Note
FCC rules: 47 CFR 97.305, 97.307(b).
Learning with Qardbox
You see a card, you think, you turn it over and say whether you knew it. A round asks nothing more of you, and how the app works out the next date from that is on the page about FSRS-6.
What sits comes back less often, what wobbles comes back soon. You set a daily goal, and when nothing is due the app tells you exactly that instead of inventing work for you. How a round goes is shown on the learning page.
Everything stays on your device. No account, no sign-up, no ads. After the purchase the deck sits in your library like any other subject and can be studied, reordered and extended just like your own.
What it costs, and what it doesn’t
Qardbox itself costs nothing, and it stays that way. Every function is there from the start, with no subscription, no ads and no tiers; what that rests on is on the page about what it costs.
Your own cards stay unlimited, and decks from friends or from the family you read in without a limit, from a file as well. You do not need this deck in order to learn with Qardbox.
It is a shortcut: 571 checked cards for €2.99, once, with Family Sharing. The work you would otherwise do is already done. The App Store shows the price in your currency.
Common questions
Do I have to pay for Qardbox?
No. The app is free, with no subscription and no ads, and every feature is included. The only thing that costs money is a ready-made deck like this one, €2.99 once.
Could I make these cards myself?
Yes, without limit and for free. You can type them, import a file or take over cards from friends. This deck only saves you the work.
How many cards are in Ham Radio: Amateur Extra?
571 cards, sorted into 10 categories.
Do I need a connection to study?
Only to download the deck. After that it lives on your device and you study offline. There is no account, and you sign in nowhere.
Which devices does this run on?
On iPhone and iPad from iOS 26, and on Apple Watch. One purchase covers the family through Family Sharing.
Is there a Qardbox for Android?
No. Qardbox is there for iPhone, iPad and Apple Watch, not for Android and not in a browser.
Other decks that go with this one
Get started
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