4 meter

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4 meter

850 links - and 11 categories

Antennas : 2M Antennas : 40M Antennas : 80M
  • K5LAD 80 meter antenna - K5LAD Article on his 42 feet wire antenna for 80 meter band
    [ Hits: 1405 | Votes: 1 | Rating: 10 ]
Antennas : Delta loop
  • Delta Loop antenna - This DeltaLoop antenna has a length of 125 meters, divided into three sides of 40, 42 and 43 meters.
    [ Hits: 2199 | Votes: 2 | Rating: 7.5 ]
Antennas : Fan Dipole
  • Multiband fan dipole antenna - A three-frequency multi-band dipole that can be extended easily to additional bands. This article includes a multiband fan-dipole antenna for 80-40-20-10 meter band.
    [ Hits: 2447 | Votes: 6 | Rating: 9.17 ]
Antennas : Four Square
  • TX Four Square Antenna - A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.
    [ Hits: 787 | Votes: 0 | Rating: 0 ]
Antennas : Magnetic Loop
  • EA4FRB Magnetic Loop - A magnetic loop antenna working from 30 to 15 meters with 100W
    [ Hits: 1183 | Votes: 1 | Rating: 1 ]
Antennas : Repair and Maintenance Antennas : Slim Jim
  • Slim Jim Aluminium - The 2 Meter 146mhz Slim Jim Antenna using aluminum tubing!
    [ Hits: 1112 | Votes: 1 | Rating: 4 ]
Antennas : Towers Antennas : Yagi
  • 70 MHz 8 elements Yagi - YU7EF 8 elements yagi antenna for 4 meters band
    [ Hits: 502 | Votes: 2 | Rating: 5.5 ]
DX Resources : Contest : Contest Rules
  • ARRL DX Contest 2011 - W/VE amateurs work as many amateur stations in as many DXCC countries of the world as possible on 160, 80, 40, 20, 15, and 10 meter bands. Foreign amateurs (also including KH6, KL7, CY9, and CYØ) work as many W/VE stations in as many of the 48 contiguous states and provinces as possible.
    [ Hits: 685 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Amplifiers : Ameritron AL-811H
  • 10/12 meter Mod for Ameritron 811 - 10 meter modification for the Ameritron AL-811 and AL-811H amplifier. This mod apply to other Ameritron AL Series RF amplifiers and allow extension to 10 and 12 meters band.
    [ Hits: 14765 | Votes: 25 | Rating: 6.52 ]
Shopping and Services : Regional : Asia
  • 409 Shop - 409 Shop is an Ham Radio and electronics online shop based on Hong Kong deliver worldwide. Ham Radio transceivers, batteries, swr meters, antennas and other ham radio accessories
    [ Hits: 3707 | Votes: 5 | Rating: 8.2 ]
Technical Reference : Power Meter
  • Homebrewed RF power meters - Homebrewed handheld RF powermeters for various sensors by DL5NEG
    [ Hits: 1285 | Votes: 0 | Rating: 0 ]
  • DJ9BV Power Meter - PCB for the DJ9BV Power Meter taken from DUBUS 3/87
    [ Hits: 1413 | Votes: 2 | Rating: 9.5 ]
Technical Reference : QRP Projects
  • QRP 5 Mhz transceiver - A QRP VXO transmitter for 60 meter band by GW4ALG
    [ Hits: 929 | Votes: 0 | Rating: 0 ]
  • MFJ Cub QRP transceiver kit - Building the MFJ Cub QRP transceiver kit for 20 meters band by G4ILO
    [ Hits: 835 | Votes: 0 | Rating: 0 ]
Technical Reference : QRP Projects : QRP CW Transceiver
  • 40 meters QRP CW RTX - This is the schematic of asolid-state 7 MHz QRP CW transmitter by VU2NAN
    [ Hits: 1084 | Votes: 2 | Rating: 8 ]

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