4 meter

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4 meter

813 links - and 9 categories

Antennas : 15M
  • Zippiro antenna for 40 Meters - Very compact and high efficiency antenna ,very low radiation angle even at low height.
    [ Hits: 1888 | Votes: 3 | Rating: 5.67 ]
Antennas : 40M
  • 40M Twin Half-Square Array  updated - 40 meters elevated vertical antenna array at VA7ST
    [ Hits: 3215 | Votes: 2 | Rating: 5.50 ]
Antennas : Delta loop
  • Delta loop antenna for 40 Meters - Information about a full wave delta loop antenna for 7MHz build according to the ARRL delta loop antenna formula.
    [ Hits: 5124 | Votes: 3 | Rating: 6.33 ]
  • 40 m Band Delta loop Antenna - 40 meters band Delta loop antenna plan that is vertically polarised
    [ Hits: 8702 | Votes: 15 | Rating: 3.66 ]
Antennas : Dipole Antennas : HB9CV Antennas : J-Pole
  • J-Pole for 14MHz - 20 meter wire j-pole for 14.2 MHz, a vertical, end-fed half wave antenna by N1LO
    [ Hits: 4342 | Votes: 3 | Rating: 5.67 ]
  • 20 Meter Jpole Vertical - The J pole vertical for 14MHz is built from a fifty-foot TV push up mast by Mike Higgins, K6AER
    [ Hits: 6618 | Votes: 3 | Rating: 9.33 ]
Antennas : K9AY
  • RX antenna for 160/80 meters - RX Antenna 160m/80m Band Splitter/Switch, a small project that will work along with the K9AY RX antenna
    [ Hits: 1858 | Votes: 0 | Rating: 0.00 ]
Antennas : OCF Antennas : Quad
  • 144MHz Cubical Quad - A project by N6BG for a four element cubical quad antenna for the 2 meters band
    [ Hits: 5152 | Votes: 17 | Rating: 6.52 ]
Antennas : Vertical
  • Multiband HF Vertical - A telescopic pole that you adjust to suit the band you're working on , tested on 40 20 and 15 meters band by M0PZT
    [ Hits: 2201 | Votes: 5 | Rating: 7.00 ]
Manufacturers : QRP Kits
  • QROlle, 6 Band QRP-rig - QROlle QRP-rig. 6 Band Shortwave rig with SMD:s. 160, 80, 40, 30, 20, 17 meters SSB/CW QRP-rig. All documentation in English
    [ Hits: 2040 | Votes: 2 | Rating: 9.50 ]
Radio Equipment : HF Vertical Antenna : GAP Titan Technical Reference : Amplifiers : VHF Amplifiers
  • 20 W linear amplifer for 2 meters band - A basic VHF power amplifier suitable for 2M (144-146 Mhz) the output power vary from 3 to 25 Watts By VU2RAR
    [ Hits: 2256 | Votes: 2 | Rating: 10.00 ]
Technical Reference : Homebrew
  • 75 meter AM Transceiver - Frequency coverage: 3.75 MHz to 4.00 MH transceiver for 75 MHz band
    [ Hits: 1024 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Power Meter
  • QRP Wattmeter - An homemade QRP Wattmeter based on the Stockton Bridge design, published in the GQRP Antenna handbook, and with an LCD display
    [ Hits: 1856 | Votes: 2 | Rating: 8.50 ]
Technical Reference : QRP Projects
  • A 40 meter SSB QRP transceiver - This transceiver was conceived as a power-efficient, small, lighweight unit to be carried in the backpack, along with antenna and battery.
    [ Hits: 2140 | Votes: 1 | Rating: 1.00 ]
Technical Reference : QRP Projects : QRP CW Transceiver
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