bi pole

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bi pole

73 links

Antennas : 12M
  • Trapped Dipole for 12 and 17 Meters - A small sized and very cheap antenna project that allow you to work on WARC bands with a total gain very close to the dipole in both bands. On 12 meters is a normal dipole, while on 17 is a trapped dipole. Article in Italia
    [ Hits: 878 | Votes: 1 | Rating: 1 ]
Antennas : 160M
  • Antennas for 160m - The best results work when you have an antenna with a large vertical component. It is difficult to get a horizontal antenna (dipole) high enough to be an effective antenna on 160. However, there are several easy things you can do with your present antenna to initially get on the best amateur radio band
    [ Hits: 1122 | Votes: 0 | Rating: 0 ]
Antennas : 6M
  • Six meter dipole project - Design and build an 6 m dipole antenna from aluminum, tubing, that resembles the active element of a yagi beam antenna.
    [ Hits: 869 | Votes: 1 | Rating: 9 ]
Antennas : 6M : 6 meter J-Pole Antenna
  • 50MHz / 6m J-pole Antenna by VK4ADC  updated - The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarized antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub.
    [ Hits: 435 | Votes: 4 | Rating: 6 ]
Antennas : Antenna Calculators
  • Log-Periodic Dipole Array Calculator - This LPDA calculator is based on the design procedure as described by L. B. Cebik, W4RNL (SK) in the 21st edition of The ARRL Antenna Handbook.
    [ Hits: 482 | Votes: 5 | Rating: 7 ]
Antennas : Dipole
  • 10 15 20m Open Sleeve Dipole - Based on a simple project based on a 2 elements Yagi for 20m band, and then becomed a triband yagi with a open-sleeve feed system
    [ Hits: 775 | Votes: 3 | Rating: 3 ]
  • Bent Dipoles reference website - Antenna modeling discussions about What happens if... a dipole is bent horizontally, laterally, vertically. Zig-zag, meander, catenary curve. Effect of sag, elevation, radials. OCF off-center feed, harmonics. Includes 4NEC2 antenna models for each study.
    [ Hits: 705 | Votes: 0 | Rating: 0 ]
  • The Standard Horizontal Dipole Characteristics - Discussion about the Standard Horizontal, Center-fed dipole and effects of elevation of the antenna on antenna radiation pattern.
    [ Hits: 126 | Votes: 0 | Rating: 0 ]
Antennas : Fan Dipole
  • Caged Fan Dipole Antenna - There are a large number of antenna designs for HF. One choice out of many is the fan dipole. The ability to transmit of multiple bands without needing a tuner (and even more with a tuner) is a very desirable factor in choosing a versitle antenna for HF.
    [ Hits: 665 | Votes: 2 | Rating: 5.5 ]
  • Fan Dipoles 10/15/20m and 12/17/30m - How to build Fan-Dipoles by DK7ZB. Experiences with various band combinations. Not all combinations are working properly. If the frequencies are to close together the impedances will lead to a very bad SWR. This happens with the bands 10-12-15m or 15-17-20m.
    [ Hits: 474 | Votes: 2 | Rating: 9.5 ]
Antennas : J-Pole
  • Tri-Band J-Pole - This strange looking antenna is a combination of Coupled-Resonator principle by K9AY and a quarter stubs to achieve low angle radiation pattern. Designed with 4nec2 NEC based antenna modeler and optimizer for 145/220/440MHz bands
    [ Hits: 1903 | Votes: 5 | Rating: 9 ]
  • Improving the Super-J - The collinear J-Pole, often known as the Super-J, does improve the behavior over a regular J-Pole. As many attest, there is an advantage when vertically combining 1/2 radiating sections to have a bit of separation between the half-wave end points. The Super-J has very little separation between the two half-wave radiators.
    [ Hits: 971 | Votes: 2 | Rating: 5.5 ]
  • Multiband J-Pole Antenna by IZ0UPS - A multiband J-Pole antenna project that cover 144,220 and 430 MHz. The articles includes several pictures of this multi-band antenna, including handmade schematics and diagrams, project is mainly in Italian
    [ Hits: 410 | Votes: 4 | Rating: 7.25 ]
  • Improving Gain of the Super J-Pole Antenna - The collinear J-Pole, often known as the Super-J, does improve the behavior over a regular J-Pole. there is an advantage when vertically combining 1/2 radiating sections to have a bit of separation between the half-wave end points. Get 0.8 dB more gain out of the trusty Super-J by replacing the traditional phasing stub with a long coil.
    [ Hits: 187 | Votes: 0 | Rating: 0 ]
Antennas : Multiband
  • Short Multiband Dipole Array - A multiband shortened fan dipole. This page offers and online calculator that can be really useful if you plan to homebrew a multiband dipole for low HF bands and you don't have all needed space for the full lenght. It combines multiband dipole with loading coild for selected bands.
    [ Hits: 229 | Votes: 0 | Rating: 0 ]
Antennas : Portable
  • Antennas for portable operations - Article describing various type of portable antennas, from verticals, to dipoles, vertical dipoles, random wire with tuners, and end-fed antennas
    [ Hits: 500 | Votes: 0 | Rating: 0 ]
Antennas : Satellite Antennas : Wire
  • HF Wire Antennas for Field Day - Dipole antennas, vertical half-wave dipole antennas with impedence tranformes that can be used for portable operations. Some well worn antenna configurations are the easiest and loudest lash-ups you can try.
    [ Hits: 217 | Votes: 0 | Rating: 0 ]
  • Lazy H Array Antenna for 40 meter - Make them simple then Make them work. The LAZY H antenna is a general type of antenna that is in the curtain array family. By placing two 1 wavelength dipoles in a plane that is at right angles to the direction of maximum radiation and keeping the proper in-phase current condition to each element, you can achieve a high gain bi-directional antenna.
    [ Hits: 283 | Votes: 3 | Rating: 5.33 ]
Operating Aids : History
  • Notable Patents on Antenna Design - Patents of most popular antenna models including Zeppelin Antenna, Beverage Antenna , Franklin Antenna , Yagi-Uda Antenna , Sterba Antenna , Rhombic Antenna , Turnstile Antenna , Folded Dipole Antenna , Coaxial Antenna , Slot Antenna , Discone Antenna , Quad Antenna Element , Log Periodic Antenna , Swiss Quad Antenna
    [ Hits: 284 | Votes: 0 | Rating: 0 ]

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