4 meter

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4 meter

850 links - and 11 categories

Antennas : 4M
  • 70 MHz Big Wheel - A Big Wheel antenna for 4 meters band by OE5MPL
    [ Hits: 1058 | Votes: 1 | Rating: 1 ]
Antennas : 80M Antennas : Array Antennas : J-Pole
  • Portable 2 Meter J-Pole - This is a simple portable 2-meter J-Pole antenna. You start with a piece of 450-Ohm Ladder Line
    [ Hits: 1089 | Votes: 2 | Rating: 5 ]
Antennas : NVIS
  • 40 m NVIS Square Loop antenna - A NVIS square loop antenna with a parasitic reflector for 40 meter band by NA4L
    [ Hits: 2324 | Votes: 7 | Rating: 6.57 ]
Antennas : Quad
  • 2 meter Quad - A 2-metre Quad antenna project by K6WXA in PDF file
    [ Hits: 1336 | Votes: 3 | Rating: 7.33 ]
Antennas : Vertical Antennas : Yagi
  • 5 elements DK7ZB Yagi for 70MHz - A 5 elements homemade DK7ZB yagi antenna for 4 meters band based on a 50MHz TONNA
    [ Hits: 1087 | Votes: 2 | Rating: 5.5 ]
DX Resources : Contest : Contest Stations
  • W8JI Contest Station - Middle Georgia USA contesting station. Consistent record holder in 160 meter and 40 meter contests.
    [ Hits: 333 | Votes: 0 | Rating: 0 ]
Internet and Radio : Forums Operating Modes : 70 MHz Operating Modes : Repeaters : USA
  • WB2HWW NYC - A very active repeater system in NYC streaming live 24/7 on thier website & on shoutcast under the listing WB2HWW & also can be heard world wide on 10 meters 29.660 with links on Echolink & IRLP
    [ Hits: 626 | Votes: 5 | Rating: 8.2 ]
Technical Reference : Amplifiers : HF Amplifiers
  • GS-35B Tube Amp - 160-10 Meters 1500 Watt Amp - W4NFR
    [ Hits: 576 | Votes: 2 | Rating: 9.5 ]
  • 3-500Z Amplifier Project - This article loaded with nice pictures and schematics, describes a 160-10 meter linear amplifier that uses a pair of 3-500Z triode power tubes. It was designed and constructed by William Moneysmith, W4NFR. The amplifier features fast warm up and 1500-Watt RF output with 100-Watts of drive.
    [ Hits: 1081 | Votes: 4 | Rating: 9.5 ]
Technical Reference : Amplifiers : VHF Amplifiers
  • 6m Power Amplifier - Home Brew 6 Meter Amplifier with a single 4CX250B by W4NFR
    [ Hits: 577 | Votes: 0 | Rating: 0 ]
Technical Reference : Transverters

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