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df antenna

334 links about df antenna on dxzone.com

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Antennas : 12M Antennas : 160M
  • 160-meters antenna problems and solutions - Bill Orr W6SAI ham radio techniques. Improving ground connection, computer analysis of the antenna, modelling sample antennas pdf file
    [ Hits: 2911 | Votes: 6 | Rating: 9.30 ]
Antennas : 20M Antennas : 2M
  • The Sperrtopf antenna for 2 meter band - By ON4CFC Pascal, describe how to build a Sperrtopf or Sleeve antenna for the 144 Mhz, PDF File by antennex
    [ Hits: 1558 | Votes: 1 | Rating: 9.00 ]
  • ZR6KMD 2M Beam Antenna - This design was adapted from an article in the ARRL Handbook and built with simplicity and duplicity in mind. This antenna is a vast improvement over a standard dipole with a forward gain of around 8db with a front to back ratio of 10db.
    [ Hits: 1913 | Votes: 1 | Rating: 2.00 ]
Antennas : 40M
  • A 40 meters DDRR Antenna - A direct drive ring radiator antenna for the 40 meters band by W6WYQ QST article.
    [ Hits: 2624 | Votes: 6 | Rating: 3.00 ]
Antennas : 6M Antennas : 80M
  • 40-80 Dipole antenna - A 40 80 dipole antenna design by WA6ESC PDF File
    [ Hits: 1171 | Votes: 1 | Rating: 5.00 ]
  • A wideband 80 meter dipole - This worthy antenna is so simple and inexpensive you will want more than one by N6LF
    [ Hits: 21036 | Votes: 10 | Rating: 6.70 ]
  • Using the half-square antenna for low bands - Can’t put up a really high horizontal antenna for 80-meter DXing? Maybe the vertically polarized Half-Square might be the antenna for you.
    [ Hits: 2420 | Votes: 3 | Rating: 6.33 ]
  • Broadbanding the half-square on 80 meters - N6LF discusses a simple way to broadband the classic half-square antenna to operate in both the CW and SSB DX windows on 80/75 meters.
    [ Hits: 1879 | Votes: 2 | Rating: 4.50 ]
Antennas : Array
  • Bruce arrays for 80 and 160m - Antennas with gain and bandwidth for 80 and 160 meters band. Simple wire antenna capable of considerable gain
    [ Hits: 7031 | Votes: 2 | Rating: 9.00 ]
Antennas : EH
  • De EH DipooleAntenne - EH Antennas, and some PDF file with plans to build an eh antenna, Calculate eh, 20 40 80 meters bands
    [ Hits: 1827 | Votes: 4 | Rating: 7.75 ]
Antennas : End-Fed
  • An improved 40-80 double extended zepp - Article originally published in ARRL compendium by N6LF revisits the classic double extended Zepp to improve pattern and SWR bandwidth. The DEZepp is essentially two end-fed collinear dipoles.
    [ Hits: 14615 | Votes: 7 | Rating: 5.14 ]
Antennas : Feed Lines Antennas : Homebrewing Techniques
  • Antenna Gain Comparison System - This device goal is to optimize homebrew antenna for the V/UHF band. This tool, is based itself on the simultaneously comparison between two antenna, directly in dB. by IK0BDO
    [ Hits: 1985 | Votes: 12 | Rating: 5.58 ]
Antennas : K9AY
  • The K9AY Terminated Loop - A compact directional receiving antenna
    [ Hits: 1912 | Votes: 5 | Rating: 6.60 ]
  • How to build the K9AY loop  updated - This document provided by AT technologies explains how to build the K9AY loop receiving antenna.
    [ Hits: 6226 | Votes: 2 | Rating: 6.00 ]
Antennas : Multiband
  • W4JOH Cobra Antenna - The original Cobra antenna, is a multiband 160 or 80 to 10 meter, designed by W4JOH is built using standard insulated wire of about 14 gauge and fed with 450 ohm ladder line down to the shack into a tuner.
    [ Hits: 1152 | Votes: 1 | Rating: 10.00 ]
  • CQ amateur radio - W5GI Mystery antenna - Review of the W5GI Multiband Mystery Antenna by July 2003 Issue of CQ Amateur Radio
    [ Hits: 5260 | Votes: 7 | Rating: 6.14 ]
Antennas : Portable
  • Ultimate Portable HF Vertical Antenna - A light and compact antenna that is easy to build, and easy to find parts for. Band coverage is 60 through 10 meters.
    [ Hits: 3757 | Votes: 3 | Rating: 8.67 ]
Antennas : Theory
  • Radial systems and ground - Radial systems for elevated and ground mounted vertical antennas by SteppIR
    [ Hits: 1910 | Votes: 4 | Rating: 8.25 ]
Antennas : Tuners
  • Getting the most from your tuner - Here is how to adjust this popular tuner circuit so it transfers maximum power to your antenna without going snap
    [ Hits: 2258 | Votes: 3 | Rating: 6.33 ]
Antennas : ZS6BKW
  • The ZS6BKW Multiband HF Antenna - Antenna design from ZS6BKW (G0GSF), similar to the G5RV, but it actually resonates on five bands Its only 90 ft long 27.51 m, with a 40 ft 12.2 m downlead
    [ Hits: 4392 | Votes: 3 | Rating: 4.00 ]
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