20 meter

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20 meter

462 links - and 5 categories

Antennas : 2M
  • VHF Big Wheel Antenna - A popular 2 meter antenna returns in an improved, easier to reproduce form, 2008 QST article
    [ Hits: 2400 | Votes: 4 | Rating: 7.5 ]
  • 2m Quad Antenna - A basic drawing of a 2 meter quad antenna for 144 MHz
    [ Hits: 2330 | Votes: 5 | Rating: 5 ]
Antennas : 40M : 40 meter Delta Loop Antennas
  • 40 Meter Delta Loop - A multi band delta loop antenna that work on 20 and 40 meters band, that can be used either on 15 meters with poor performances
    [ Hits: 3117 | Votes: 9 | Rating: 7 ]
  • Full Wave Delta Loop for 7 MHz - An homebrew project of a full wave delta loop antenna for the 40 meters band with dimensione, picture and assembling instructions in Indonesian
    [ Hits: 779 | Votes: 1 | Rating: 8 ]
Antennas : 40M : 40 meter Vertical Antennas
  • High Performance 40 Meters Vertical - 40 meter vertical antenna construction, a shortened easy-to-build vertical, with no-radials, made from surplus military camouflage poles
    [ Hits: 2228 | Votes: 2 | Rating: 8.5 ]
Antennas : 40M : 40 meter Yagi Antennas
  • 40 Meters 3 element Wire Yagi - A three element wire yagi antenna for 7 MHz project plan with drawings and EZNEC model
    [ Hits: 2189 | Votes: 7 | Rating: 4.71 ]
Antennas : Array Antennas : Dipole
  • 20 40 80 Trapped Dipole - An homemade portable trapped dipole antenna for 40 and 80 meters band with an optional extension for the 20 meters.
    [ Hits: 1396 | Votes: 9 | Rating: 5 ]
Antennas : Vertical
  • Balloon Vertical Omni-Antennas - Experimenting vertical wire antennas for 40 and 20 meters supported by balloons resulting in excellent gain in RX and good overall performance against horizontal dipole
    [ Hits: 771 | Votes: 1 | Rating: 5 ]
  • 20m 40m trapped squid pole antenna - An homemade portable vertical antenna with a trap near the mid point of the main element. The trap is made with 42mm diameter PVC pipe with 9 turns of wire on it
    [ Hits: 3017 | Votes: 5 | Rating: 5.2 ]
Antennas : W3DZZ
  • W3DZZ Multi-band Antenna 80-40-20-15-10m - A multiband antenna that can work from 80 to 10 meters in this illustrated docuemnt by G8ODE
    [ Hits: 2724 | Votes: 4 | Rating: 8.75 ]
  • OH2EC Antenna - A trapped dipole antenna based on the orignal W3DZZ antenna design resonating on 80 40 20 15 10 meters
    [ Hits: 1501 | Votes: 5 | Rating: 8.2 ]
Antennas : Wire
  • Safari - Inverted V antenna - A dual band portable inverted V antenna for 80 and 40 meters band with dimensions for other bands and several assembling instruction
    [ Hits: 619 | Votes: 1 | Rating: 5 ]
Manufacturers : Test Equipment : Signal generator
  • Keysight (Agilent) Signal Generator - Keysight offers numerous baseband, RF, and microwave signal generator (signal source) products. From basic to advanced, baseband to 67 GHz, Keysight signal generators are capable of frequency extensions to 500 GHz with millimeter-wave source modules.
    [ Hits: 237 | Votes: 0 | Rating: 0 ]
Operating Aids : Radio Spectrum
  • Top Band Frequencies - 160 meter band allocations by world area, with best and known bad frequencies indications.
    [ Hits: 996 | Votes: 0 | Rating: 0 ]
Operating Modes : Portable Operations
  • Fun and Games with the Spiderbeam 18 Meter Pole - A portable operation experience with a SpiderBeam pole during a contest, testing wire antennas, like dipole and delta loops configurations on 20 40 and 80 meters band.
    [ Hits: 312 | Votes: 1 | Rating: 10 ]
Radio Equipment : HF Transceivers : Icom IC-7300
  • First Impressions of the Icom IC-7300 - An early review of the Icom IC-7300 HF + 6M Transceiver includes four videos demonstrating reception on 40 meters band
    [ Hits: 604 | Votes: 1 | Rating: 10 ]
Radio Equipment : HF YAGI Antennas : Cushcraft MA5B
  • MA5B Manual - Cushcraft MA5B 20 / 17 / 15 / 12 / 10 Meter Beam Antenna assembly and installation manual
    [ Hits: 688 | Votes: 1 | Rating: 1 ]
Technical Reference : Amplifiers : HF Amplifiers
  • A simple 50W RF Power Amplifier - A simple RF power amplifier initially designed for 40 meter band can work on 10 15 20 40 80 meters
    [ Hits: 1630 | Votes: 1 | Rating: 8 ]
Technical Reference : Arduino
  • Arduino SWR and Power Meter - The circuit is based on two AD8307 log amplifiers, which are connected to the forward and reflected ports on a directional coupler
    [ Hits: 1577 | Votes: 3 | Rating: 6.67 ]

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