4 element

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Antennas
  • Delta Quad by F6CNE - A 4 element delta quad antenna for 15 meters in french
    [ Hits: 1472 | Votes: 3 | Rating: 5.00 ]
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: 4284 | Votes: 9 | Rating: 7.33 ]
  • A 5 element beam for 10 meter band - Here is a very simple 5 element covering the entire 10 meter band (28.000-29.700) with a swr of less than 1.4 at the band edges
    [ Hits: 4416 | Votes: 4 | Rating: 6.25 ]
Antennas : 2M
  • A portable 2-element VHF yagi - Build a portable VHF yagi antenna for 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4 CPVC pipe with one tee.
    [ Hits: 26331 | Votes: 21 | Rating: 5.38 ]
  • Portable Yagi for 144MHz - Simple 7 element Yagi is ideal for portable operation by EI9GQ
    [ Hits: 12968 | Votes: 31 | Rating: 6.87 ]
  • M3FVB 2 meter quad - Photos and building procedure for a home brew 2 elements Quad for 144 mhz.
    [ Hits: 4717 | Votes: 2 | Rating: 8.50 ]
  • Stacked 7-Element-2m-Yagis - These yagis and groups were designed with YO7.23 from K6STI and checked with EZNEC from W7EL. With a gain of 14/17/20dBd they have a good relation between gain and mechanical problems.
    [ Hits: 3658 | Votes: 6 | Rating: 4.67 ]
  • 13 elements Yagi antenna for 144 MHz - DJ9BV yagi antenna for 2 meters band
    [ Hits: 7013 | Votes: 31 | Rating: 5.43 ]
  • 2 Meter 10 Element Quagi Antenna - This antenna was designed by N6JSX Kuby for Transmitter hiding. Fitting the requirements of directionality, high gain, and portability. This antenna was derived from the ARRL Handbook information on Quagi's and Yagi's; in the absence of two meter Quagi information, UHF Quagi dimensions were scaled into 146 MHz use.
    [ Hits: 13242 | Votes: 23 | Rating: 7.17 ]
Antennas : 40M : 40 meter Delta Loop Antennas
  • K4TX Delta Loop for 40 Meters - 40 Meter 2 Element Parasitic Delta Loop wire antenna with pictures of delta loop assembling
    [ Hits: 6349 | Votes: 9 | Rating: 8.34 ]
Antennas : 6M
  • A 6m portable 4 element quad - This antenna is based on a design for a portable 2 element 6m Quad by VE7CA, which is featured in the 19th Edition of the ARRL Antenna Handbook
    [ Hits: 6216 | Votes: 21 | Rating: 8.35 ]
  • 6elements 6.4 Mtr 50MHz LFA - A Compact 6el 6M Yagi with over 32dB F/B and more than 11.6dB Gain!
    [ Hits: 377 | 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: 1318 | Votes: 6 | Rating: 4.83 ]
Antennas : 70cm
  • 432 Mhz 8 Element Quagi Antenna - How to build a 432 Mhz Quagi, using a wood-made boom, and gives a 13 DBI Gain
    [ Hits: 10748 | Votes: 32 | Rating: 5.10 ]
  • 8-Element 430 MHz Quagi - Picture and notes of a 8 elements Quagi antenna for 432 Mhz b Paul Bock, K4MSG
    [ Hits: 3585 | Votes: 4 | Rating: 9.25 ]
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: 5443 | Votes: 2 | Rating: 7.00 ]
Antennas : Quagi Antennas : WiFi 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: 1160 | Votes: 4 | Rating: 4.75 ]
Technical Reference : Filters
  • A low pass filter circuit - A simple 7 element, Chebyshev low pass filter, rolls of at 30MHz. Attenuation is better than -40dB at 60MHz, -65dB at 90MHz, -80dB at 120MHz.
    [ Hits: 4921 | Votes: 18 | Rating: 6.17 ]
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