metre

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metre

102 links

Antennas : 2M
  • Make your own 2 metre 5/8 whip antenna - This article is about a home made project of a whip antenna for 2 meters band. Includes lenght of whip for all frequencies from 140 MHz to 151 MHz both in mm and inches
    [ Hits: 384 | Votes: 1 | Rating: 5 ]
Antennas : 40M : 40 meter Dipole Antennas
  • Make a Compatct Dipole for 7 MHz - This article demonstrate how to build and mount a 40 meter loaded dipole using basic materials. This antenna reduce the overall length of an HF dipole through the use of loading coils.
    [ Hits: 215 | Votes: 0 | Rating: 0 ]
Antennas : 6M
  • Six Meter Quad Turnstile Antenna - Simple 6 Metre DX Antenna based on an article by LB Cebick in QST May 2002 on a Quad Turnstile antenna. This antenna is basically two full wave loops mounted at right angles fed 90 degrees out of phase to produce an omni-directional horizontally polarized pattern
    [ Hits: 701 | Votes: 2 | Rating: 9.5 ]
  • G3JVL Vertical Antenna for 50 MHz - The G3JVL 6M ground plane vertical is a compact antenna that is ideal for portable operations. It packs away into a small bag only 1.3 metres long which is an ideal size for hand-baggage on aircraft.
    [ Hits: 244 | Votes: 2 | Rating: 9.5 ]
  • 6 metre SOTA Antenna - A simple and light vertical coaxial dipole for 50-52 MHz band, designed for portable SOTA operations based and inspired by the VK2ZOI flower pot antenna
    [ Hits: 164 | Votes: 0 | Rating: 0 ]
Antennas : 6M : 6 meter Yagi Antennas
  • 6 Elements Yagi Antenna on 50 MHz - This is a design based on the QuickYagi 4 software by WA7RAI with some changes for practical reasons. The beam uses 6.5 metres of standard 25mm square boom, 12mm diameter elements without tapers. The actual boom length used is 6.3 metres and all parts are readily available.
    [ Hits: 131 | Votes: 2 | Rating: 6 ]
  • A Loft-Yagi for Six Metres - This design makes the most of having to put an aerial in the attic. This inverted-vee yagi is giving good results at GW0GHF. Directive gain is about 6 dBd. The front-to-back ratio is not brilliant, about 20 dBd.
    [ Hits: 138 | Votes: 1 | Rating: 5 ]
  • 6el LFA Yagi for 50MHz - This six element LFA Yagi for six meters has a 1.5 inch square boom with a 1.5 inch secondary boom beneath the first. This ensures the 7.3 metre long boom will not sag and will not require any guying. This antenna has 12.3 dBi Gain and just over 23dB F/B.
    [ Hits: 116 | Votes: 2 | Rating: 4 ]
Antennas : Dipole
  • 160-80-40 Metre Trapped V-Dipole - A Trapped dipole inverted V antenna for lower HF Bands. Construction details are for temporary installation. Permanent installations will require additional ruggedising and waterproofing however the basic electronics concepts remain the same. This project includes SWR plots for the three bands and pictures details of the homemade traps.
    [ Hits: 108 | Votes: 0 | Rating: 0 ]
Antennas : End-Fed
  • Testing End Fed Long Wire Antenna - Testing a 27.2 metre end fed long wire antenna,used for SOTA activations placed as an inverted V. The author reports in this article an on the field practical result.
    [ Hits: 165 | Votes: 0 | Rating: 0 ]
Antennas : J-Pole Antennas : Loop
  • 40m Loop Antenna - This project is a full wavelength, horizontal, loop antenna for the 40 metre Amateur Radio band, built using insulated copper wire in a diamond shape, supported by egg insulators, tethered to 4 masts, each 6.5m high
    [ Hits: 192 | Votes: 0 | Rating: 0 ]
Antennas : Magnetic Loop
  • 2 meter Magnetic Loop Antenna - VHF Antenna in a Lunchbox, The Magnetic Loop on Two Metres. The two metre magnetic loop is a compact antenna which can easily be hung up under the eaves, the carport, or any other place where space is limited including indoors
    [ Hits: 515 | Votes: 1 | Rating: 1 ]
Antennas : Portable
  • 2 Meter Portable Yagi Antenna - 144MHz 2m Portable Yagi VHF Beam Antenna. This page contains construction details on a 2 metre 144MHz VHF Yagi beam antenna, designed for portable use.
    [ Hits: 135 | Votes: 0 | Rating: 0 ]
  • 144 MHz 2m dipole for SOTA - Simple 144 MHz 2 metre dipole for mounting on a telescopic fishing pole
    [ Hits: 258 | Votes: 0 | Rating: 0 ]
Antennas : Vertical Operating Modes : RTTY
  • Getting Started with RTTY/PSK - The data modes have become particularly popular in recent years, with RTTY and PSK31 being heard almost every evening, particularly on 20 metres. So, now is a very good time to get started.
    [ Hits: 260 | Votes: 0 | Rating: 0 ]
Technical Reference : HF Radios
  • The G4AON SSB Transmitter - This transmitter covers the 160, 80, 40 and 20 metre bands and provides both SSB and properly generated CW. The CW side of this transmitter is not compromised and produces excellent CW. On SSB the audio has been tailored to provide a rising response to 3 KHz, with a sharp drop above that frequency. There is RF speech clipping to both provide more "punch" and to limit the peak output.
    [ Hits: 180 | Votes: 2 | Rating: 9.5 ]
Technical Reference : QRP Projects Technical Reference : QRP Projects : QRP CW Transceiver
  • 80 meter Ceramic Resonator VXO CW Transmitter - Frequency agile 80 metre CW QRP transmitter. Ceramic resonators vary in the frequency shift obtainable. The one in the prototype of this article gave 3.525 to 3.558 MHz coverage.
    [ Hits: 224 | Votes: 1 | Rating: 1 ]

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