File:Nord antenna.png
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Summary
| Description |
English: Drawing of Nord antenna, a type of folded monopole umbrella antenna used by the US Navy. It consists of a grounded metal tower radiator, fed by a feedline attached to the top, with three guy wires at 120° angles attached to the top of the tower acting as a capacitive topload, running diagonally to three support poles 1/3 the height of the tower a, connected to the ground through tuning capacitors ("guy termination units"). This is used as a transmitting antenna in the LF band. Using a 300 - 400 foot tower, the feed resistance can be varied from 20 to several hundred ohms. It has inductive reactance, varying up to 1400 ohms |
| Date | |
| Source | Retrieved 14 September 2020 from Manual NAVELEX 0101,113, Naval Shore Electronics Criteria, Naval Electronics Systems Command, US Navy, Washington DC, October 1972, p. 4-27, fig. 4-17 |
| Author | Unknown author |
Licensing
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This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:36, 15 September 2020 | | 1,093 × 669 (21 KB) | Chetvorno | Uploaded a work by Unknown from Retrieved 14 September 2020 from [http://www.navy-radio.com/manuals/0101-1xx/0101_113-04.pdf Manual NAVELEX 0101,113, Naval Shore Electronics Criteria, Naval Electronics Systems Command, US Navy, Washington DC, October 1972, p. 4-27, fig. 4-17] with UploadWizard |
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