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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.
also, "The ARRL Antenna Book gives a constant of 1.415 for weak signals during normal tropospheric conditions." strangely, the ARRL Handbook condradicts this: 1.15 is the factor quoted there (page 21.20 of the 1999 edition.) so which is correct? Waveguy
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.
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.
The founding editor was Paul Rinaldo, W4RI, who also contributed many technical articles to the ARRL membership journal, QST. In January, 2000, the American Radio Relay League purchased a competing publication, Communications Quarterly from CQ Communications, Inc. (who also publish the CQ Amateur Radio magazine), and merged the contents into QEX .
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]
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.
In telecommunications, the free-space path loss (FSPL) (also known as free-space loss, FSL) is the attenuation of radio energy between the feedpoints of two antennas that results from the combination of the receiving antenna's capture area plus the obstacle-free, line-of-sight (LoS) path through free space (usually air). [1]
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