u dipole

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u dipole

496 links - and 2 categories

Antennas
  • W8JK Beam Antenna - The W8JK is a famous and effective DX antenna, first built by John Kraus, W8JK, in 1937. A Beam antenna with two parallel dipoles driven with opposite phase, with a close spacing of an eighth of a wavelength.
    [ Hits: 3300 | Votes: 12 | Rating: 6.42 ]
Antennas : 10M
  • 10 meter DiPole - 10 Meter Easy to build wire dipole antenna
    [ Hits: 561 | Votes: 0 | Rating: 0.00 ]
Antennas : 40M : 40 meter Dipole Antennas
  • 40 Meter Dipole - A rotary dipole for thr 7 MHz 40 meters band, build recovering a couple of sections of an old commercial two element yagi antenna of one inch aluminium tubing with fiberglass rod insulators in them
    [ Hits: 301 | Votes: 1 | Rating: 7.00 ]
  • A shortened 40 meter rotary dipole - The antenna build into this project is made from 2 fishing poles on a fiberglass pole in the center.
    [ Hits: 584 | Votes: 2 | Rating: 6.50 ]
Antennas : 40M : 40 meter Vertical Antennas Antennas : 4M
  • A centre-fed co-axial dipole for 4-m - This design has the following advantages low-cost components, Easy to set-up - nothing to adjust, no metalwork required, and only four soldered joints!
    [ Hits: 295 | Votes: 0 | Rating: 0.00 ]
Antennas : 80M
  • Broadband 80 meter dipole - The AB2RA bowtie 80 meter antenna includes also a 40 meter dipole
    [ Hits: 492 | Votes: 0 | Rating: 0.00 ]
Antennas : Antenna Calculators Antennas : Baluns
  • When and Where to Use Baluns - Baluns are usually used by Hams to feed dipole antennas with 50 ohm coax and to transpose from ladder line feeding a multi-band antenna to the unbalanced input of an antenna tuner.
    [ Hits: 889 | Votes: 7 | Rating: 7.71 ]
Antennas : Dipole
  • A simple 20-40 dipole - A simple to build full length 20/40 dipole antenna to be used in inverted vee configuration
    [ Hits: 641 | Votes: 3 | Rating: 5.67 ]
  • HF Linked Dipole Antenna Calculator - An online link dipole antenna designer allow calculate up to five elements of a linked dipole simply by deciding the desired frequency and defining the support dimensions.
    [ Hits: 1168 | Votes: 6 | Rating: 5.67 ]
Antennas : Portable
  • Portable lightweight link dipole - A multi band portable link dipole antenna for 20 30 and 40 meters band
    [ Hits: 490 | Votes: 0 | Rating: 0.00 ]
  • 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: 343 | Votes: 0 | Rating: 0.00 ]
Antennas : Theory Antennas : Theory : Impedance matching
  • The Gamma Match - The gamma match was originally invented as a means of feeding vertical monopole antennas for medium wave broadcasts, which were earthed at the base for lightning protection- Hams are more likely to use a gamma match to feed a dipole or loop element, but the basic theory is easier to understand for the case of a quarter wave monopole.
    [ Hits: 475 | Votes: 1 | Rating: 8.00 ]
Antennas : VHF UHF
  • VHF UHF Coaxial Dipole Antenna - A base station antenna you can easily build for 146,220 or 440 MHz, with performance similar to a J-pole but smaller and less obstrusive
    [ Hits: 1012 | Votes: 3 | Rating: 7.00 ]
  • VHF / UHF Antenna Design - A dipole for 2m, 4m, 6m band an hamdwritten note for a homemade vhf antenna that can be tuned across the VHF band
    [ Hits: 735 | Votes: 1 | Rating: 2.00 ]
Manufacturers : Antennas : HF
  • Maxcon Antennas - Maxcon makes and sells Amateur Radio Antennas. Double extended Zepp antenna, multiband dipoles, bazooka antennas, and VHF Jpole, made in USA
    [ Hits: 173 | Votes: 2 | Rating: 4.50 ]
Radio Equipment : HF Portable Antenna : Buddipole
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