4 meter

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4 meter

820 links - and 10 categories

Antennas : 20M Antennas : 20M : 20 meter Dipole Antennas
  • 20 meters rigid dipole - Rigid Dipole antennas for 14 MHz band using PVC and Aluminium tubing
    [ Hits: 6557 | Votes: 14 | Rating: 6.57 ]
Antennas : 2M
  • 6 and 2 Meter Square Copper Dipoles - In this eHam article you will find parts list and dimension sheet for a 2m square dipole, made from copper plumbing fittings and 1/2 inch copper water pipe.
    [ Hits: 6068 | Votes: 6 | Rating: 6.33 ]
  • 145 Mhz Crossed Yagi - Crossed yagi antenna for 2 meters band by VK4ZXX
    [ Hits: 5736 | Votes: 19 | Rating: 7.52 ]
Antennas : 40M : 40 meter Vertical Antennas Antennas : 80M
  • Wire Antenna for 75 and 80 Meters - This article is about a wire antenna that covers the entire 3.5 to 4.0 MHz band with an SWR below 2:1 consists of two coupled dipoles, one resonant at about 3.5 MHz and one resonant at about 4 MHz, resulting in the low SWR
    [ Hits: 1626 | Votes: 0 | Rating: 0.00 ]
Antennas : End-Fed Antennas : G5RV
  • I0SJC G5RV antenna - A plan to homebrew a G5RV antenna, tunable on 10-15-20-40-80 meters band
    [ Hits: 1607 | Votes: 3 | Rating: 6.00 ]
Antennas : K9AY
  • Beverages on 40 Meters - Gary Breed, K9AY experience with beverages on 40 meters
    [ Hits: 2487 | Votes: 2 | Rating: 3.50 ]
Antennas : Multiband
  • Inverted L Portable Antenna - An 87ft inverted L portable antenna working on 80 40 30 20 15 meters band by N5ESE
    [ Hits: 2222 | Votes: 3 | Rating: 9.33 ]
Antennas : Portable
  • DF Antenna for 2 meters - Direction Finding (DF or Fox) hunts antenna for 144 Mhz
    [ Hits: 2548 | Votes: 2 | Rating: 1.00 ]
Antennas : Vertical
  • Antenne verticale HF. - A vertical antenna project than can present low swr from 40 to 10 meters by using a balun in french
    [ Hits: 2051 | Votes: 0 | Rating: 0.00 ]
  • Dual Band vertical antenna for 20/40 - A 20 and 40 meter vertical on Autopilot by K6MHE PDF File
    [ Hits: 11471 | Votes: 10 | Rating: 7.20 ]
Antennas : Yagi
  • 3 element portable Yagi for 2 meters - The I DX is a homemade 3 element portable Yagi-UDA ante a for 144 MHz
    [ Hits: 5463 | Votes: 8 | Rating: 6.25 ]
  • Log Yagi antenna - 5 element yagi antenna by F5MAG, and a 4 elements for 10 meters in french
    [ Hits: 1443 | Votes: 3 | Rating: 8.67 ]
Operating Modes : SSTV : SSTV Images
  • Digital SSTV images - HAMDRM pictures received on 80 meters band at 3733 KHz
    [ Hits: 152 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Amplifiers : VHF Amplifiers Technical Reference : QRP Projects
  • Optimist-80 - A QRPp DSB transceiver for the 80 meter band (1 Watt PEP)
    [ Hits: 1038 | Votes: 3 | Rating: 7.00 ]
Technical Reference : Receivers
  • The AGC-80/40 - A Regenerative Receiver with AGC for 80 and 40 Meters by Rick Andersen, KE3IJ
    [ Hits: 1046 | Votes: 0 | Rating: 0.00 ]
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