• Antenna systems - polarization, antenna length, gain, directivity, radiation pattern, bandwidth, vertical antennas, Yagi antennas, wire antennas, quad/loop antennas. (PDF file, opens in a separate window)

  • Feedlines - feedine characteristics, impedance, balanced and unbalanced feed lines, baluns, coaxial connector types, line losses, length and frequency, standing waves, standing wave ratio, SWR meters, impedance matching. (PDF file, opens in a separate window)

  • Understanding antennas - 74 pages of antennas basics in plain English (PDF file, opens in a separate window)

  • Baluns - What they do and how they do it (PDF file, opens in a separate window)

  • Field Antenna Handbook - US Marine Corps Reference Publication including transmission lines, antenna selection, antenna field repairs and satellite antennas. (PDF file, opens in a separate window)

Notice: Most of the resources on this page are hosted on remote servers. Most of them are copyrighted and may require a permission from the owner in order to use them other than for personal use. The majority of the materials comes from the Toronto Emergency Communications (EmComm) Group and is offered free of charge to all Radio Clubs, ARES Groups, and individuals in the interest of public safety and community service. Unless stated otherwise, this web page serves as a links database to the most valuable internet resources for ham radio enthusiasts.
Trap dipole