18 elements

18 elements

Antennas : 20M : 20 meter Vertical Antennas

• Vertical antenna for 20-15-10 m - This is a vertical multiband antenna made up of several aerial elements lambda/4 length, feeded with just a coaxial cable in French.
  [ Hits: 23583 | Votes: 20 | Rating: 5.2 ]

• 35 Element Yagi Antenna for 23cm - Antennas for the 1296 MHz based on the construction plans of some Yagis 35 elements by DL6WU, F9FT, DJ9YW. These antennas features a boom of about 3 m and gives a gain of about 17.8 dBd
  [ Hits: 211 | Votes: 1 | Rating: 7 ]

• Lightweight 144 MHz Yagi antenna  ^updated - A Lightweight 2m Yagi for SOTA. The boom is 20mm PVC electrical conduit and the elements are 2.4mm aluminium TIG welding rod. The antenna is carried as a single length of conduit with the elements stowed inside the boom, sealing them in with a bung. The driven element is connected directly to 50 Ohm coax with a BN-43-202 balun core to decouple the coax shield.
  [ Hits: 180 | Votes: 1 | Rating: 4 ]
• An 8x2 Element Array Antenna For 144 MHz - This stacking offers a well known simple phasing technique. All elements can be fed in parallel by open wires provided that they are fed in phase. This can be achieved by twisting the open wire phasing-lines at 180 degrees.
  [ Hits: 165 | Votes: 0 | Rating: 0 ]

• 6 element UHF Yagi antenna - A standard 6 elements design scaled for UHF application. All material used in this project are easily obtainable tubes and rods which is limited within a total budget of $18.
  [ Hits: 3897 | Votes: 10 | Rating: 6.79 ]
• EF7018 - UHF 18 Elements Yagi Antenna Plan - A 70 cm yagi antenna design by YU7EF includes tables with antenna elements dimension and spacing. This UHF Yagi antenna plan provides a maximum gain of 17.93 db
  [ Hits: 322 | Votes: 0 | Rating: 0 ]
• Roving Antenna Range and Much More - A 18 elements Yagi antenna for 432/435 MHz as published on 2011 CQ VHF magazine
  [ Hits: 218 | Votes: 0 | Rating: 0 ]

• Phased Array Antennas - Phased array antennas are composed of multiple individual antenna elements that can have their phase and amplitude controlled to steer the main beam direction in real-time. They are used in radar, communications, and electronic warfare, and offer improved gain and reduced side lobes. A comprehensive document on Phased Arrays include techniques to increase the Antenna Gain and change the Radiation Pattern
  [ Hits: 82 | Votes: 0 | Rating: 0 ]

• A cheap VHF UHF Yagi - Elements are aluminum TIG soldering rods 4.0mm of diameter, almost 1m long, these objects are light, thin and flexible based on the RZ9CJ Design
  [ Hits: 273 | Votes: 3 | Rating: 9.67 ]