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Stumpwizards Ham Study Guide

License Overview

Technician

  • Entry-level amateur license
  • Strong starting point for VHF/UHF operating, repeaters, emergency communications, and basic HF privileges
  • Core topics: rules, operating practice, electronics basics, antennas, and safety

General

  • Expands HF privileges significantly
  • Best fit for long-distance communication on popular HF bands
  • Core topics: propagation, operating practice, intermediate circuits, digital modes, and station setup

Amateur Extra

  • Highest U.S. license class
  • Broadest operating privileges
  • Core topics: advanced electronics, regulations, and in-depth RF concepts

How To Study Efficiently

  1. Learn concepts first instead of memorizing letter patterns.
  2. Study in shorter daily sessions.
  3. Keep a band plan nearby when reviewing privileges.
  4. Practice phonetics, logging, and operating language out loud.
  5. Spend more time on missed questions than on repeat passes through correct ones.

Core Knowledge Areas

Rules and Operating Practice

  • The FCC regulates amateur radio in the United States.
  • Your call sign identifies your station.
  • You must operate only within your license privileges.
  • The control operator is responsible for proper station operation.
  • Stations must avoid harmful interference.

Frequency, Wavelength, and Modes

  • Frequency is measured in hertz.
  • Higher frequency means shorter wavelength.
  • HF is commonly used for long-distance skywave communication.
  • VHF and UHF are commonly used for local and regional communication.
  • FM is common on repeaters, SSB is common on HF, and CW remains useful in weak-signal conditions.

Repeaters

  • A repeater receives on one frequency and retransmits on another.
  • Offset is the difference between repeater input and output.
  • A CTCSS tone may be required for access.
  • Listen first to avoid doubling with another station.

Electrical Basics

  • Voltage is electrical pressure.
  • Current is the flow of charge.
  • Resistance opposes current flow.
  • Power is measured in watts.
  • Ohm's Law: V = I x R, I = V / R, R = V / I.
  • Power equations: P = V x I, P = I^2 x R, P = V^2 / R.
P V R I Power Voltage Resistance / Current
V = I x R
I = V / R
R = V / I

Ohm's Law Calculator

Enter any two values to solve the other electrical quantities.

Enter two known values such as voltage and resistance.

Components and Circuits

  • Resistors limit current.
  • Capacitors store energy in an electric field.
  • Inductors store energy in a magnetic field.
  • Fuses protect against overcurrent.
  • Transformers transfer energy between windings.
  • Diodes mainly allow current in one direction.

Antennas and Feed Lines

  • Antennas convert RF energy to radio waves and back again.
  • Coaxial cable is a common amateur feed line.
  • Feed line loss generally increases with frequency and length.
  • SWR indicates how well the antenna system matches the transmission line.
  • Low SWR helps, but it does not guarantee an effective antenna.

Propagation and Safety

  • VHF/UHF is often line-of-sight.
  • HF can support long-distance contacts through ionospheric propagation.
  • Solar conditions and time of day affect band behavior.
  • Keep antennas and masts clear of power lines.
  • Use proper grounding and never bypass protective devices.

Test-Day Strategy

  1. Answer easy questions first.
  2. Flag calculations and return to them.
  3. Read words like best, most, and primary carefully.
  4. If two answers seem close, choose the safer or more compliant one.