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2. Numerical Electromagnetics Code - Wikipedia

   en.wikipedia.org/wiki/Numerical_Electromagnetics...

   VK3IL - Multiband end-fed 80-10m antenna - NEC2 model file of a "MyAntennas EFHW-8010" multi-band antenna. Other retail books (such as The ARRL Antenna Book, Marcel De Canck's Advanced Antenna Modeling, and others) also include antenna model files. Most free or retail NEC software packages include an 'example' folder containing antenna model files.

3. American Radio Relay League - Wikipedia

   en.wikipedia.org/wiki/American_Radio_Relay_League

   The ARRL publishes various technical books and online courses. Members of the organization also have access to a special Members Only section of the ARRL web site that includes technical documents, expanded product reviews of amateur radio equipment, expanded contesting information, and a searchable database of all league publications.

4. William I. Orr - Wikipedia

   en.wikipedia.org/wiki/William_I._Orr

   William Ittner Orr (1919–2001) was an engineer, educator, communicator, and ham radio operator. [1] [2] [3] He was the American author of numerous amateur radio and radio engineering texts.

5. Loop antenna - Wikipedia

   en.wikipedia.org/wiki/Loop_antenna

   A quad antenna is a self-resonant loop in a square shape; this one also includes a parasitic element.. Loop antennas may be in the shape of a circle, a square, or any other closed geometric shape that allows the total perimeter to be slightly more than one wavelength.

6. Moxon antenna - Wikipedia

   en.wikipedia.org/wiki/Moxon_antenna

   Moxon antenna for the 20-meter band.The antenna is the faint rectangle of wires held in tension by the bent X-shaped support frame. Moxon antenna for the 2-meter band. The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. [1]

7. Field Day (amateur radio) - Wikipedia

   en.wikipedia.org/wiki/Field_Day_(amateur_radio)

   Solar-powered Amateur Radio Station in tents with portable VHF/UHF satellite and HF antennas in the background HF transceiver for voice communications. Field Day is an annual amateur radio contest, widely sponsored by IARU regions and member organizations, encouraging emergency communications preparedness [1] among amateur radio operators. In ...

8. Karl Rothammel - Wikipedia

   en.wikipedia.org/wiki/Karl_Rothammel

   Karl Rothammel (1914 – 1987) was an amateur radio enthusiast, author and educator. He published articles in the journal Radioamatér for five years, and authored several books including Very High Frequencies and Practice of the Television Aerials.

9. Amateur Radio Emergency Service - Wikipedia

   en.wikipedia.org/wiki/Amateur_Radio_Emergency...

   Most individual ARES units are autonomous and operate locally. Although the Amateur Radio Emergency Service is a program (and trademark) of the American Radio Relay League (ARRL) in the U.S., the structure is more supportive than directive in nature, providing mostly for mutual aid in the event of large-scale emergencies. As long as local units ...