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4 meter

680 links and 2 categories about 4 meter on dxzone.com

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Antennas : 10M
  • 40 thru 10 Meter Zepp Antenna  pop - A modified 20 meter double zepp wire Operating Bands: 40 thru 10 meters (with tuner), basic construction and performance information.
    [ Hits: 79425 | Votes: 63 | Rating: 5.75 ]
  • The optimized wideband antenna - NW3Z yagi antenna designs for Dayton 2001 Includes yagis for 20 15 10 meters.
    [ Hits: 5164 | Votes: 6 | Rating: 3.00 ]
Antennas : 160M Antennas : 20M
  • Homebrew Travel Antenna - This is a low cost homebrew two band travel antenna for 20 and 40 meters. It is based on the B&W Travel Antenna concept with a telescoping whip and a loading coil
    [ Hits: 15107 | Votes: 11 | Rating: 6.36 ]
Antennas : 40M
  • Build this Novice 4 band vertical  pop - Home made vertical antenna for 80 40 15 10 meters ARRL PDF file taken from QST June 1978
    [ Hits: 68728 | Votes: 40 | Rating: 7.20 ]
  • Linear-Loaded Dipole for 7 MHz - A short but efficient dipole for 40 meters band
    [ Hits: 20114 | Votes: 19 | Rating: 8.84 ]
  • A Feasible Full Sized 40 Meter Beam - This project started as a result of renewed interest in 40 meters coupled with the desire for an antenna system that would be more effective than the simple dipole.
    [ Hits: 6769 | Votes: 0 | Rating: 0.00 ]
Antennas : Baluns : 4 to 1 balun
  • How To Make A Homebrew 4:1 Balun  pop - I built a homebrew 75 meter Double Extended Zepp Antenna, And I needed a 4:1 Balun So I decided to Homebrew the Balun also. Here is how I did it!
    [ Hits: 81564 | Votes: 96 | Rating: 6.12 ]
Antennas : J-Pole
  • 2 Meter J-pole from 450-Ohm Ladder Line  updated  pop - Great first time J-pole project. Covers most of the basics. This small and thin design also makes it good for several stealth applications.
    [ Hits: 39886 | Votes: 43 | Rating: 7.24 ]
  • J-Pole, tunable - An adjustable VSWR, 2 meter J-Pole
    [ Hits: 5887 | Votes: 4 | Rating: 2.75 ]
Antennas : Loop
  • 160 meter full wave loop antenna  updated  pop - The antenna is a 10 - 160 meter horizontal loop fed with 450 ohm ladder line all the way into the ham shack to an Palstar AT1500BAL balanced line antenna tuner
    [ Hits: 87863 | Votes: 99 | Rating: 6.64 ]
Antennas : Mobile Antennas : Multiband
  • The Lattin 5 Band antenna - The antenna was named for W4JRW who invented it and holds a patent on the basic principle and uses quarter wave stubs, 80, 40, 20, 15 and 10 meter bands
    [ Hits: 23017 | Votes: 14 | Rating: 7.43 ]
Antennas : Stealth Antennas : Vertical
  • Vertical wide band 7-21 Mhz - The RXO unitenna pdf file a vertical antenna for 40 to 15 meters band
    [ Hits: 22458 | Votes: 33 | Rating: 6.29 ]
Antennas : Windom
  • Smithe Windom Six Band HF Windom antenna - HF Windom antenna, cover 80, 40, 20 15, and 10 meters, antenna design by K3MT
    [ Hits: 22880 | Votes: 11 | Rating: 8.79 ]
  • OH7SV Matti Hohtola Ham Projects - The most modern QRP transceiver in 2004,Direct Conversion HF Transceiver with DDS LO, 50 ohm to 200 ohm HF wide band transformers, Wilkinson splitter for RX measurements, Windom baluns 2001/2004, Ferrite rod antenna for 80 meter, Magnetic Loop Antenna for 80 m, Mascot Switched PSU 9320 modification to 8A peak current, 150W MOSFET linear amplifier for 80m, 80 m HF SSB/CW Transceiver
    [ Hits: 18932 | Votes: 24 | Rating: 8.17 ]
CB Radio : Clubs
  • Lima Radio - Group website of 11 meter group Lima Radio
    [ Hits: 824 | Votes: 5 | Rating: 2.60 ]
Ham Radio : Clubs : North America : USA
  • Hams for Christ Net - Fellowship of Christian Amateurs meeting M-F on 40 meters
    [ Hits: 724 | Votes: 6 | Rating: 7.67 ]
Manufacturers : Antennas : Marine
  • KB9VBR J-Pole Antennas - All copper J-Pole antennas for sale. 6 meter, 2 meter, 222 MHz, 440 MHz, LPFM, Marine, GMRS. Includes a construction plan in pdf format if you wish to build your own antenna.
    [ Hits: 5913 | Votes: 8 | Rating: 6.25 ]
Technical Reference : Homebrew Technical Reference : Preamplifiers
  • 144 MHz preamplifier with BF981 - Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.
    [ Hits: 15798 | Votes: 26 | Rating: 5.92 ]
  • Motorola Micor Highband Preamp - Make 150.8 - 174 Mcs. RF Preamp properly tune the Two Meter ham band.
    [ Hits: 1732 | Votes: 1 | Rating: 10.00 ]
  • GaAs FET preamps - Build a good GaAs FET preamp for 2 meters, 222 or 440 Mhz
    [ Hits: 8304 | Votes: 3 | Rating: 7.00 ]
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