elements

elements

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• A 7 elements 144MHz yagi antenna - A home made project for a 7 element yagi antenna for the two meters band based on the DK7ZB original desing.
  [ Hits: 86 | Votes: 0 | Rating: 0 ]
• Two elements Telescopic Yagi for 2 Meters - A lightweight PVC hand-held telescopic 2 element 2m (145 MHz) yagi using two pairs of TV rabbit ear antennas as the driven and reflector elements. Approximate directional gain is 5dB.
  [ Hits: 162 | 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 ]

• Extended Double Zepp NVIS Antenna Calculator - Extended Double Zepp measurements for all ham bands, and online calculator. The antenna is constructed much like an ordinary Dipole antenna but with 5/8 Wavelength Elements matched with an added Impedance Matching Section of balanced feed line
  [ Hits: 125 | Votes: 3 | Rating: 7 ]
• Yagi Uda Antenna Online Calculator  ^updated - A basic YAGI UDA online antenna calculator, accept as input frequency, number of elements, diameter of parasitic element and boom diameter. This online calculator will generate a basic design data including each element length and spacing.
  [ Hits: 111 | Votes: 4 | Rating: 6.25 ]

• 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 ]

• Reversible 40 Meter Moxon - The author wants a compact, switchable antenna for 40-meter ham radio. They compare 3 designs: rectangle, short-tipped W6NL, and T-hat. All work well electrically, but mechanics matter for a large antenna. The rectangle needs strong support, while the T-hat is sturdier with slightly longer elements. The T-hat design wins for now, but the author will focus on its mechanical details next.
  [ Hits: 75 | Votes: 2 | Rating: 5.5 ]

• Foldable Yagi Antenna - A home made RDF 3 elements Yagi that can be used for fox hunting. The particularity of this antenna is that it can be folded, in order to save space while travelling. In Dutch.
  [ Hits: 236 | Votes: 1 | Rating: 10 ]

• 3 Element Quad for 50 MHz - A 14.12 dBi gain three elements cubical quad antenna for the six meters band. This Quad Antenna design page include a MMA model available to download and dimensions for each element.
  [ Hits: 48 | Votes: 1 | Rating: 3 ]

• 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 ]
• Small DuoBand Antenna - This small dual band UHF VHF directional antenna is good choice for portable operations. This antenna is composed by a moxon antenna for the two meters band and it includes two parastatic elements for 70 cm band.
  [ Hits: 197 | Votes: 1 | Rating: 2 ]
• VHF UHF Duo band Yagi Antenna - Duoband Yagi 2m/70cm with 4 Elements on 2 m and 5 Elements on 70 cm and one Feed point. The 4-El.-Ultralight-Yagi for 2m can be used on 70cm with an SWR of 1,5 without any changes.
  [ Hits: 155 | Votes: 6 | Rating: 7 ]

• 13 Elements Yagi for 144 MHz - A homebrew 13 elements yagi antenna for two meters band. These project includes two model of the same antenna with a 6 and 7 meter boom length. Detailed pictures and nec files are available for download
  [ Hits: 142 | Votes: 0 | Rating: 0 ]

• Portable HAM radio station - Guide to setting up a portable ham radio station, selecting the right components and buying the correct ones, finally setting up and assembling the whole elements.
  [ Hits: 111 | Votes: 0 | Rating: 0 ]

• Sherwood Tools - Rigs, Price and Satisfaction Studies - A growing set of pages with tools and analyses of various elements of data elements based on Sherwood RX tests
  [ Hits: 140 | Votes: 0 | Rating: 0 ]

• Building an Enhanced APRS IGate with Debian 12 and Raspberry Pi - The guide outlines necessary components, including a 2m FM analog radio, USB audio adapter, and Raspberry Pi. Building a cable to connect these elements is assumed, as is knowledge of Raspberry Pi OS installation.
  [ Hits: 58 | Votes: 0 | Rating: 0 ]

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