df antenna

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df antenna

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Antennas : 160M
  • Isolation chokes for 160m verticals - An article on how much impedance you really need and how small can be a chooke for top band vertical antennas by N6LF
    [ Hits: 628 | Votes: 0 | Rating: 0 ]
Antennas : 20M
  • Directional Helical Antenna - This antenna is intended for the 20-meter Band. There are two Voltage Fed Helical Dipoles, made with 2 slinky that fed with phase shift in 90 degree
    [ Hits: 1083 | Votes: 1 | Rating: 8 ]
Antennas : 6M : 6 meter Yagi Antennas
  • 5 Element LFA Yagi for 6 meters band - A Loop Fed Array Yagi antenna for 50 MHz featuring 11 dBi gain and 23 f/b ratio. In this excellent page the author even includes a detailed drawing in DWG format, with element lenght and spacing measures, in a separa file a full list of material list needed to build this yagi antenna including source and price, the EZnec file for this antenna plan, and a lot of pictures of this LFA Yagi for 50 Mhz. A ten page PDF file containing all infos, is also available to download.
    [ Hits: 1177 | Votes: 7 | Rating: 8.57 ]
  • Six Meter Yagi Beam - Article describing how to homebrew a yagi antenna for 50 MHz, includes plans for a four and five elements yagi beam and details how how match impedence with a gamma match
    [ Hits: 1036 | Votes: 3 | Rating: 4.33 ]
Antennas : 80M
  • A Broadband 80/160 meter dipole - An easy to build single wire antenna for 160 and 80 meters with a better than 2 to 1 swr across the 80 meter band
    [ Hits: 2504 | Votes: 1 | Rating: 8 ]
Antennas : End-Fed
  • End-Fed 6-40 M Multiband Antenna - This project produces an inexpensive, multiband, end fed HF antenna matchbox, quick and easy to setup. This project creates a trifilar wound, 9:1 UNUN toroid matching transformer. Handles 100W and need an antenna tuner.
    [ Hits: 1989 | Votes: 4 | Rating: 8.25 ]
Antennas : Fractal
  • Fractal Quad Yagi - Fractal Quad Yagi Antenna by KF7BS published on 73 magazine October 99
    [ Hits: 1737 | Votes: 6 | Rating: 4.83 ]
Antennas : G5RV
  • Half Size G5RV - Also known as G5RV junior the half size G5RV feature reduced dimension and multiband coverage
    [ Hits: 5311 | Votes: 8 | Rating: 5.75 ]
  • 160-RV - Top Band G5RV Antenna - How to turn a G5RV antenna into a 160 meter band antenna with easy to find parts. A G5RV adapter for tob band by Thomas AD1B
    [ Hits: 2911 | Votes: 5 | Rating: 5.8 ]
Antennas : Multiband
  • W8JK Modified Array - A Compact and efficient multiband beam antenna based on a Modified W8JK Array by K5LJ
    [ Hits: 954 | Votes: 3 | Rating: 7 ]
  • The Loop Skywire Antenna - Looking for an all-bad HF antenna that is easy to contruct, costs nearly nothing and works great DX ? Try the Loop Skywire by W0MHS
    [ Hits: 3150 | Votes: 9 | Rating: 8 ]
  • Classic Multiband Dipole - The Classic Multiband Dipole Antenna QST article. The open-wire feed line dipole antenna is easy to install and offers surprising performance on several bands. You can install it in almost any configuration; it does not have to be strung in the traditional horizontal flat top
    [ Hits: 2167 | Votes: 3 | Rating: 10 ]
Antennas : Patch
  • The Basics of Patch Antennas - This article explores the basic concepts of patch antennas. Topics include principles of operation, impedance matching, radiation pattern, circular polarization, bandwidth, efficiency, alternative feed types, stacked patches and higher mode behavior.
    [ Hits: 803 | Votes: 1 | Rating: 9 ]
Antennas : Resonant Feedline Dipole Antennas : VHF UHF
  • Tape Measure VHF antenna - A cheap and easy to build tape measure antenna suitable for RDF or any portable operation use.
    [ Hits: 575 | Votes: 0 | Rating: 0 ]
Radio Equipment : Antenna Analyzers : Array Solutions AIM 4170D
  • AIM 4170 CQ Review - Array Solutions AIM 4170 Antenna/Lab RF Analizer published on CQ by AD5X
    [ Hits: 260 | Votes: 0 | Rating: 0 ]
  • Array Solutions AIM 4170 Review - Array Solutions AIM 4170 Antenna Impedance Meter, QST Review
    [ Hits: 314 | Votes: 0 | Rating: 0 ]
Radio Equipment : Reviews and Comparisons
  • Vector network analyzer comparisons - Test comparison of different Vecto network analyzers, like N2PK VNA , AIM4170 by W5BIG , TenTec TAPR VNA , IW3HEV miniVNA , MFJ 259B using a HP 3577A VNA as reference by Rudy Severns N6LF
    [ Hits: 789 | Votes: 0 | Rating: 0 ]

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