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Welcome to Wikiham
The ham radio free encyclopedia.
Wikiham is an English-language knowledge base for amateur radio: a place to explain how radio works, share practical operating knowledge, and document projects so other operators can learn from them.
New to amateur radio? Start with the essentials. Building a station? Explore antennas and station design. Interested in the network side of radio? Visit amateur radio networks.
Explore the encyclopedia
| Topic | What you will find |
|---|---|
| Radio basics | Signals, frequency, wavelength, callsigns and the language of radio. |
| Bands and propagation | HF, VHF and UHF; how radio waves travel; how to find the right band plan. |
| Antennas and feed lines | Dipoles, verticals, directional antennas, coaxial cable and matching. |
| Operating practices | Making contacts, repeaters, logging and considerate operation. |
| Digital modes | Computer-assisted radio, weak-signal modes and packet communication. |
| Your station | Transceivers, receivers, accessories, grounding and station documentation. |
| 44net and radio networks | Amateur radio networking, IP connectivity, tunnels and measurement tools. |
| Projects and experiments | A structured home for builds, tests and reproducible results. |
| Glossary | Short explanations of common amateur radio terms. |
Help build Wikiham
Read the contributor guide for the article format, sources and editing basics. Approved contributors can create pages, improve explanations and upload diagrams. Every page has a revision history, making changes easy to review and restore.
Wikiham is readable by everyone. Contributor accounts are created by the administrator. See About Wikiham for its scope and content licence.