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Antennas
  • Maria Maluca Antenna - This small beam fed with VHF ribbon line consists of a dipole and a director adjusted for the desired band by dl8ncr
    [ Hits: 2036 | Votes: 5 | Rating: 7.00 ]
  • Antenne Maria Maluca - An antenna originally planned in the sixties, a two element beam antenna tunable on several band, in french
    [ Hits: 1526 | Votes: 2 | Rating: 4.50 ]
Antennas : 10M
  • Shortened dipole for 10 & 40m bands - A shorten Dual-Band Dipole with overall length of about 11 m. For this antenna traps are substituted by inductors, in order to cover the 10 & 40 m. Bands.
    [ Hits: 3876 | Votes: 1 | Rating: 1.00 ]
  • The Homebase 10 halo antenna - A small weekend project to build a 10m band wire halo antenna
    [ Hits: 4845 | Votes: 7 | Rating: 9.21 ]
Antennas : 2M
  • 7db gain antenna for 2 meters band - This article describes building a 2-meter beam antenna with 7db gain for $7.00. Made of PVC and welding rod. Originally dated April 1993 by WB0CMT.
    [ Hits: 2874 | Votes: 6 | Rating: 5.83 ]
Antennas : 70cm
  • Portable 70cm Quadruple Quad Beam - A suitable high gain 70cms antenna for SOTA operation was sought that did not have the drawbacks of a long Yagi antenna, principally a narrow beamwidth and bandwidth.
    [ Hits: 3281 | Votes: 3 | Rating: 8.00 ]
Antennas : 80M
  • Restricted space 80 meter antenna - This article describe a small single wire antenna running on the side of the building allow operations on 80 meters band
    [ Hits: 3215 | Votes: 2 | Rating: 8.00 ]
Antennas : Dipole
  • Inverted V - Described is a simple inverted-V antenna which, when used with a balanced ATU, can be used on all the main Radio Amateur HF bands (80, 40, 20, 15 and 10m). The cental support is made in such a way that the wire can be coiled up for storage when the antenna is taken down.
    [ Hits: 3191 | Votes: 1 | Rating: 8.00 ]
Antennas : Magnetic Loop
  • The Thick Loop - The performance of a small magnetic loop can be improved constructing it larger, thicker or both. The antenna is covering from 12 Megahertz to 32 megahertz and adding a 156 Pico farads ceramic capacitor it resonates on the 40 meters band. by PY1AHD
    [ Hits: 926 | Votes: 0 | Rating: 0.00 ]
Antennas : Multiband
  • Building the G3TXQ Hex Beam - This site provides guidelines to build a G3TXQ broad band hex beam R.F. antenna for the five amateur radio bands, 20, 17, 15, 12 and 10 meters. The G3TXQ broad band hex beam is a new development and actually easier to build than the classic hexbeam by K4KIO
    [ Hits: 4100 | Votes: 6 | Rating: 8.17 ]
Antennas : Theory
  • About broadband - What you gain and what you lose. While broadband and electrically small antennas may look attractive on the surface, they are by necessity compromises and usually donít work as well as tuned antennas.
    [ Hits: 556 | Votes: 0 | Rating: 0.00 ]
Antennas : W3DZZ
  • W3DZZ multiband dipole - The multi-band trapped dipole is resonant on approx 3.7, 7, 14, 24 7 28.5 Mhz. The overall top length needs to be approximately 32.9 Meters
    [ Hits: 9381 | Votes: 16 | Rating: 7.68 ]
DX Resources : Beacons
  • VHF UHF European Beacons - MMMonVHF maintains the data for 6m, 2m, 70cm and 23cm bands in collaboration to LA0BY. This site allow display of a beacon map and latest beacon spots.
    [ Hits: 2353 | Votes: 11 | Rating: 5.91 ]
DX Resources : Ham Radio Awards
  • Low Band Monitor Awards - The Low Band Monitor Awards Program is free to all subscribers and is based on operating achievements that occur during the 7-Month Season
    [ Hits: 207 | Votes: 1 | Rating: 1.00 ]
Operating Modes : SSTV : SSTV Images
  • K6HR SSTV image Gallery - Picture gallery of SSTV cams received on 20 meters band by K6HR
    [ Hits: 135 | Votes: 1 | Rating: 10.00 ]
  • Digital SSTV images - HAMDRM pictures received on 80 meters band at 3733 KHz
    [ Hits: 149 | Votes: 0 | Rating: 0.00 ]
Software : Beacon Monitoring
  • BeSpeak - BeSpeak is a real time HF beacon announcer. You select a band and the screen shows location, callsign and status of the beacon transmitting at that time.
    [ Hits: 713 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Amplifiers : HF Amplifiers
  • KENWOOD TL-922 Modifications - Allow 9 bands and 1300 Watt output on the TL-922 amplifier with this document by PA0FRI
    [ Hits: 2747 | Votes: 9 | Rating: 3.89 ]
Technical Reference : Duplexers
  • Diplexer 2m 70cm - This DIPLEXER separates 2m from 70cm on the same coax cable, and allows to use 2 antennas over the same cable and permits transmission on one band and simultaneous receiption on the other band by hb9abx
    [ Hits: 3547 | Votes: 10 | Rating: 8.40 ]
Technical Reference : Spectrum Analyzers
  • 2.4GHz Spectrum Analyser - This is a simple project that allows you to monitor the 2.4GHZ band in your immediate vicinity.
    [ Hits: 1456 | Votes: 2 | Rating: 1.00 ]
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