4 elements

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98 links

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: 4131 | Votes: 9 | Rating: 7.33 ]
Antennas : 15M
  • 4N1SM 5 elements yagi for 15 Meters - EF155A1 21 MHz monobander antenna by YU7EF
    [ Hits: 1096 | Votes: 0 | Rating: 0.00 ]
  • Monster Quads - N6LF tells us about his monster two-element 40-meter quad, with bonus three elements on 20 and 15 meters.
    [ Hits: 5661 | Votes: 0 | Rating: 0.00 ]
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: 36987 | Votes: 31 | Rating: 5.66 ]
  • 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: 5976 | 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: 5024 | Votes: 13 | Rating: 5.69 ]
  • 8 Element Quad for 145 Mhz - 8 elements quad antenna for 2 meters band, centered on 145 Mhz
    [ Hits: 25646 | Votes: 89 | Rating: 5.80 ]
  • M3FVB 2 meter quad - Photos and building procedure for a home brew 2 elements Quad for 144 mhz.
    [ Hits: 4599 | Votes: 2 | Rating: 8.50 ]
  • 13 elements Yagi antenna for 144 MHz  updated - DJ9BV yagi antenna for 2 meters band
    [ Hits: 5940 | Votes: 25 | Rating: 4.77 ]
Antennas : 6M
  • 6elements 6.4 Mtr 50MHz LFA - A Compact 6el 6M Yagi with over 32dB F/B and more than 11.6dB Gain!
    [ Hits: 339 | Votes: 1 | Rating: 5.00 ]
  • WB7PMP 4 and 7 eleemts yagi for 50 Mhz - Original drawing and design of a 4 and 7 elements yagi antenna for 50 Mhz
    [ Hits: 1289 | Votes: 6 | Rating: 4.83 ]
  • 4 el yagi for 50 Mhz - The EF0604S a 4 elements yagi antenna plan for six meters band by YU7EF
    [ Hits: 2644 | Votes: 5 | Rating: 5.20 ]
  • Hex Beam for 6 meters - This is a hex beam designed for six meters. It has three elements with a turning radius of 54 inches. This antenna can be built from low cost materials available from the local hardware store. By WB3BEL
    [ Hits: 3226 | Votes: 4 | Rating: 6.25 ]
Antennas : 70cm
  • 8-Element 430 MHz Quagi - Picture and notes of a 8 elements Quagi antenna for 432 Mhz b Paul Bock, K4MSG
    [ Hits: 3454 | Votes: 4 | Rating: 9.25 ]
Antennas : Delta loop
  • 2 x 5 delta loop - VHF horizontal stack 2 x 5 elements delta loop
    [ Hits: 21841 | Votes: 11 | Rating: 5.00 ]
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: 2980 | Votes: 6 | Rating: 5.00 ]
Antennas : Log Periodic
  • Log Periodic Antenna Design  updated  pop - calculates the dimensions and spacings of the elements needed to build a log periodic antenna, given tao, sigma and the lower and upper cutoff frequencies.
    [ Hits: 28541 | Votes: 240 | Rating: 6.06 ]
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: 5312 | Votes: 2 | Rating: 7.00 ]
Antennas : Quagi Antennas : VHF UHF Antennas : Yagi
  • 4 element yagi for 20 meters  updated - Pictures and plans of a 4 elements yagi beam antenna for 14 Mhz
    [ Hits: 11119 | Votes: 17 | Rating: 4.75 ]
  • The G4ZU Bird Yagi - Interesting variant on the 3-element Yagi. Lightweight fiberglass (or similar) tubes supporting a wire structure of elements
    [ Hits: 2954 | Votes: 2 | Rating: 6.00 ]
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: 982 | Votes: 2 | Rating: 3.50 ]
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