df antenna

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df antenna

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Antennas : 160M
  • The Cobra Antenna - A folded wire antenna for 160 meters as appeared on 73 amateur radio magazine june 1997
    [ Hits: 2134 | Votes: 4 | Rating: 5.75 ]
Antennas : 40M : 40 meter Vertical Antennas
  • High Performance 40 Meters Vertical - 40 meter vertical antenna construction, a shortened easy-to-build vertical, with no-radials, made from surplus military camouflage poles
    [ Hits: 2228 | Votes: 2 | Rating: 8.5 ]
Antennas : 6M : 6 meter Yagi Antennas
  • 3 Element Yagi Antenna Plan for 6 meter - A short boom, wideband 3 element yagi antenna plan for six meters that cover the entire band with a resonable performance and a 50 Ohm SWR of less 2:1. Article appeared in QST August 2007
    [ Hits: 1291 | Votes: 0 | Rating: 0 ]
  • Homebrewing a 6 Meter Yagi - In this PDF article Zack Lau describe how to homebrew a four element yagi beam antenna for 50 MHz band, including how to build mounting blocks and tubing clamps to hold elements.
    [ Hits: 961 | Votes: 2 | Rating: 5.5 ]
Antennas : End-Fed
  • Multiband end fed antennas - This is a 200 Watt PEP step up transformer for end fed full and half wave antennas without radials, designed as a 200 Watt PEP
    [ Hits: 2273 | Votes: 9 | Rating: 7.32 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • Shortened EFHW Antenna 80-10m - A shortened multiband antenna, about 23m long, for 80m - 10m bands with a low SWR (<1.3) on 80m and 40m, and <3 till 10m. Bandwith on 80m is 300kHz
    [ Hits: 4116 | Votes: 10 | Rating: 6 ]
Antennas : Four Square
  • 80M 4-Square - An antenna project to obtain a bigger signal on the 80 Meter (3.5 to 3.8 MHz) amateur radio band
    [ Hits: 836 | Votes: 0 | Rating: 0 ]
Antennas : G5RV
  • Double Size G5RV  updated - Building the double size G5RV antenna, part list, assembly part, dimensions and assembly instruction in a pdf document
    [ Hits: 1031 | Votes: 1 | Rating: 9 ]
  • ZS6BKW vs G5RV - An exaustive comparison of the two antenna models including antenna Patterns/SWR at 40 ft center height, 27 ft end height ~148 Degree Included Angle
    [ Hits: 1398 | Votes: 4 | Rating: 7 ]
Antennas : Magnetic Loop
  • Magnetic Loop Antennas - A presentation about magnetic loop antennas, includes components, differences among small loop and resonant loops, advantages and electrical characteristicsof mag loop antennas
    [ Hits: 992 | Votes: 1 | Rating: 10 ]
  • The Midnight Loop  updated - An Experimental, High-efficiency, Graphic-Tunable Magnetic Loop antenna and loop controller in a 52 pages PDF presentation with drawings and pictures
    [ Hits: 1174 | Votes: 2 | Rating: 8.5 ]
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 : Tuners
  • QRP Z-Match Tuner 40-10m - The Z Match is really a basic L Match consisting of a series capcitor and variable shunt inductor, coupled to the antenna using the RF transformer action.
    [ Hits: 1799 | Votes: 0 | Rating: 0 ]
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: 2922 | Votes: 15 | Rating: 5.55 ]
  • A 146- and 445-MHz J-Pole Antenna - Pipe your signals to 146 and 445 MHz with one antenna!
    [ Hits: 1527 | Votes: 3 | Rating: 8 ]
Antennas : Vertical
  • Radials on Vertical Antennas - Experimental Determination of Ground System Performance for HF Verticals
    [ Hits: 1396 | Votes: 9 | Rating: 6.67 ]
Antennas : Wire
  • Safari - Inverted V antenna - A dual band portable inverted V antenna for 80 and 40 meters band with dimensions for other bands and several assembling instruction
    [ Hits: 619 | Votes: 1 | Rating: 5 ]
Radio Equipment : HF Portable Antenna : TransWorld Antennas TW2010
  • TW4040 Manual - PDF manual of the TW4040 The Adventurer MonobanderTM TransWorld Antennas
    [ Hits: 629 | Votes: 0 | Rating: 0 ]
  • TW2010L Manual - TW2010L The Adventurer Lite TransWorld Antennas instruction manual PDF file
    [ Hits: 461 | Votes: 2 | Rating: 5 ]
Technical Reference : Coax Cables and Connectors
  • PL259 Surge Arrestor - Limiting static surges on dipoles, verticals or end fed antennas
    [ Hits: 900 | Votes: 0 | Rating: 0 ]

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