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Band Plan: Ham Radio Toolkit

The reference and calculator set a US amateur radio operator reaches for at the bench, in the truck, or in a field with no signal. Pay once, no account, no network.

📱 iOS · $2.99 🤖 Android · $9.99 One-time purchase
App Store · $2.99 Google Play · $9.99
Band plan

See where you may transmit

Every US amateur band from 160 meters to 23 centimeters, drawn as a bar you can read at a glance.

By license class Pick Technician, General or Amateur Extra and see where you may transmit, in what modes and at what power, from 47 CFR Part 97, with the section cited on every segment.
Tap any frequency See who may use it and what convention applies there.
Conventions, labelled The voluntary ARRL band-plan conventions and calling frequencies are included and marked as conventions rather than rules.
Current rules Includes the December 2025 changes to 60 meters.
Reference

The lookups you keep needing

Searchable by meaning: type “location” and it finds QTH.

Q-codes Both the question and statement forms, browsable and searchable.
RST reports Type 579 and read what it means.
CW abbreviations and prosigns With the Morse for each.
Phonetic alphabet and callsign speller Type W1AW/7 and read or hear “Whiskey One Alfa Whiskey Stroke Seven”. Includes the three ITU regions and what they mean for a US operator.
Calculators

Antennas and RF math, with the working shown

Every calculator shows its formula and its assumptions. Cut long and trim — the app says so.

Antenna lengths Half-wave dipole, inverted V, quarter-wave vertical with radials, full-wave loop (square, delta or circle) and J-pole. Frequency in, lengths out in feet-and-inches and metric, with an adjustable end-effect constant and wire velocity factor.
Decibels and power dB to power and voltage ratio and back; dBm to watts and back.
SWR and loss SWR from forward and reflected power; return loss, mismatch loss and reflected power for any SWR.
Coax loss and ERP Loss for 15 common lines (RG-58, RG-8X, RG-213, LMR-240, LMR-400, LMR-600, Heliax, ladder line and more) at any frequency and length, plus ERP and EIRP.
On iPhone and iPad

FCC exam prep is included

The App Store listing is named Band Plan & GROL Exam Prep, and the exam prep is in the $2.99 price with no in-app purchase.

The iOS app also carries the complete question pools the FCC publishes for its commercial radio operator examinations: Elements 1, 3, 6, 7, 7R, 8 and 9, 2,859 questions with every figure, plus timed practice exams and spaced repetition. See GROL Exam Prep for what that covers.

On Android the exam prep is a separate app, GROL Exam Prep: FCC Elements, and Band Plan is the reference and calculators only.

Sources and limits

Encoded from the rules, and says so

The band plan was encoded from the eCFR text of 47 CFR Part 97; the date is shown in Settings, and the FCC changes the rules from time to time. Where an operating decision matters, consult 47 CFR Part 97 directly. The app is a reference and study aid.

Band Plan stores everything on your device, has no server, requests no permissions and works with no network connection. You can export saved calculations and bookmarks as CSV or JSON at any time.

ARRL is a registered trademark of the American Radio Relay League, Inc., which is not affiliated with and does not endorse this app. Not affiliated with the FCC or any government entity.
FAQ

Questions, answered

How much does it cost?
$2.99 on the App Store, where it includes the FCC exam prep, and $9.99 on Google Play for the reference and calculators. Both are one-time purchases with no subscription.
Why is the price different on iPhone and Android?
The iOS app bundles the FCC commercial radio operator exam prep. On Android that is a separate app, GROL Exam Prep, which is free to download with a one-time unlock.
Where do the band edges come from?
47 CFR Part 97, the FCC rules themselves. Every segment cites its section so you can check it. ARRL band-plan conventions and calling frequencies are included and labelled as conventions.
Are the antenna calculations exact?
No calculator’s are. Each shows its formula and assumptions, including the end-effect constant and wire velocity factor, both adjustable. Cut long and trim.
Does it need an internet connection?
No. It makes no network connections at all and requests no permissions.
Is it a substitute for the FCC rules?
No. Consult 47 CFR Part 97 directly where an operating decision matters. The app cites the section on every segment so you can find it quickly.

More questions? support@wanderingdev.dev

Free reference

The US amateur radio band plan

Every band with the segments each license class may use, the modes allowed and the power limit — the whole allocation from 47 CFR Part 97, free to read here. No app, no sign-up — read it here.