4 elements

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4 elements

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Antennas : 10M
  • A 5 elements Vee log-yagi for 10m - 5 elements "vee" log-yagi for 10m band- boom lenght : 4mt. Gain : over 10 dBd , f/b =over 40 db (deep null) f/b= min 20dB for different polarization signals
    [ Hits: 4370 | Votes: 10 | Rating: 7.60 ]
Antennas : 15M Antennas : 2M
  • 7 Elements YAGI for 144 Mhz  pop - The QM7 antenna is a simple 7 elements Yagi with 3.7 m boom length for the lower 144 MHz SSB/MGM band, in PDF Format
    [ Hits: 40602 | Votes: 40 | Rating: 5.87 ]
  • QM5 Yagi for 2 meters band - The QM5 antenna is a simple 5 elements Yagi with 1.88 m boom length for the lower 144 MHz SSB/MGM band, I used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 9.17 dBd; i.e. 11.3 dB forward gain over the isotropic radiator, while the F/R is about 11.5 dB. Elements
    [ Hits: 6562 | Votes: 4 | Rating: 5.25 ]
  • QM7 7 elements 144 MHz Yagi-Uda Antenna - The QM7 antenna is a simple 7 elements Yagi with 3.70 m boom length for the lower 144 MHz SSB/MGM band, used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 11.35 dBd; i.e. 13.5 dB forward gain over the isotropic radiator, while the F/R is about 12.5 dB
    [ Hits: 5229 | Votes: 15 | Rating: 5.27 ]
  • 8 Element Quad for 145 Mhz  pop - 8 elements quad antenna for 2 meters band, centered on 145 Mhz
    [ Hits: 28612 | Votes: 101 | Rating: 5.88 ]
  • Portable Yagi for 144MHz - Simple 7 element Yagi is ideal for portable operation. The elements can be removed and replaced in a few minutes. The 2.42 m boom will fit inside a car, the elements are made from 6mm solid aluminium rod.
    [ Hits: 14000 | Votes: 34 | Rating: 6.74 ]
  • M3FVB 2 meter quad - Photos and building procedure for a home brew 2 elements Quad for 144 mhz.
    [ Hits: 4799 | Votes: 2 | Rating: 8.50 ]
  • 13 elements Yagi antenna for 144 MHz - DJ9BV yagi antenna for 2 meters band
    [ Hits: 8211 | Votes: 32 | Rating: 5.57 ]
Antennas : 6M Antennas : 6M : 6 meter Yagi Antennas
  • 6elements 6.4 Mtr 50MHz LFA - A Compact 6el 6M Yagi with over 32dB F/B and more than 11.6dB Gain!
    [ Hits: 422 | Votes: 1 | Rating: 5.00 ]
  • WB7PMP 4 and 7 elements yagi for 50 Mhz - Original drawing and design of a 4 and 7 elements yagi antenna for 50 Mhz
    [ Hits: 1379 | Votes: 6 | Rating: 4.83 ]
  • 4 el yagi for 50 Mhz - The EF0604S is a compact 4 elements yagi antenna plan for six meters band featuring 8.77 dBi gain and a front back gain of 17.89 dB. Article includes elements dimensions and spacing, along to pictures of some homebrewed examples.
    [ Hits: 3052 | Votes: 8 | Rating: 6.80 ]
Antennas : J-Pole
  • Super J-Pole for 435MHz - The Super J Pole antenna is a co-linear vertical consisting of a number of half wave length vertical elements separated with half-wave length stubs (Tuning stub) feed with a folded matching stub by vk6ysf
    [ Hits: 3223 | Votes: 6 | Rating: 5.00 ]
Antennas : Multiband
  • The 5 Bands Wire-Beam - This wire-beam has one radiator-element, feeded with 450-Ohm-Wireman-twinlead and needs an antenna-tuner. For the bands 6m, 10m, 12m, 15m, 17m and 20m bended reflector-elements are used. The support is a cross of 4 fibreglass-fishing-rods
    [ Hits: 5543 | Votes: 2 | Rating: 7.00 ]
Antennas : Quagi Antennas : VHF UHF Antennas : Yagi
  • 4 element yagi for 20 meters - Pictures and plans of a 4 elements yagi beam antenna for 14 Mhz
    [ Hits: 12677 | Votes: 22 | Rating: 4.53 ]
  • The G4ZU Bird Yagi - Interesting variant on the 3-element Yagi. Lightweight fiberglass (or similar) tubes supporting a wire structure of elements
    [ Hits: 3126 | Votes: 3 | Rating: 6.67 ]
Software : Antenna analysis
  • Smith Chart Software - SimSmith is a highly interactive, real time Smith chart graphing program. Circuits are constructed using drag-n-drop. Load files can be imported from the EZNEC and CocoaNEC antenna simulation software and from the AIM4170 and miniVNApro antenna analyzers. Circuits and load files can be of any size. Key Features: SimSmith is one of the few Smith chart packages which models transmission line losses. SimSmith also allows the description of circuit elements using algebraic equations. SimSmith has only one screen and allows the screen to be resized to increase workspace or readability.
    [ Hits: 1315 | Votes: 4 | Rating: 4.75 ]

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