20 meter

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20 meter

409 links - and 4 categories

Antennas : 15M
  • HF Copper Loop for 20 and 15 meters - A Small Transmitting Loop Antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space, by Lloyd Butler VK5BR
    [ Hits: 7281 | Votes: 1 | Rating: 5.00 ]
  • Small loop antenna for 15 and 20 meters - A Small Transmitting Loop Antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space by Lloyd Butler VK5BR
    [ Hits: 3343 | Votes: 1 | Rating: 2.00 ]
Antennas : 20M : 20 meter Dipole Antennas
  • An effective 3 band Wire DX aerial - A 3 band dipole for 10 15 and 20 meters band, easy to build, and that can be easily setup in any occasion, inclunding field days or portable operations
    [ Hits: 12859 | Votes: 5 | Rating: 6.40 ]
Antennas : 20M : 20 meter Vertical Antennas Antennas : 40M : 40 meter Vertical Antennas
  • Backyard 7 Mhz Vertical - A vertical antenna for 40 meters band by PA5MW
    [ Hits: 1009 | Votes: 0 | Rating: 0.00 ]
  • A portable 10/20/40 mt vertical antenna  pop - A portable vertical antenna for 10 to 40 meters, designed for mobile operations can be used in a car as seen in pictures. A modified version for 20 and 40 meters is described too.
    [ Hits: 74940 | Votes: 41 | Rating: 4.95 ]
Antennas : Dipole
  • Multiband HF antenna - A multiband hf antenna for restricted spaces covering 80 40 20 15 meters Based on the VK2ERG shortened 80M dipole
    [ Hits: 4876 | Votes: 4 | Rating: 7.00 ]
Antennas : EH
  • A simple EH antenna - Simple EH antenna project for EH antennas from 20 to 10 meters band by F5IXU in french
    [ Hits: 2656 | Votes: 0 | Rating: 0.00 ]
Antennas : Indoor
  • Indoor multiband dipole - This indoor dipole is available in two version for 20-10 meters and 40-10 meters. EZNEC data files available by HB9MTN
    [ Hits: 6300 | Votes: 4 | Rating: 7.00 ]
Antennas : Multiband
  • Vertical antenna for Vacation - Vertical Vacation Antenna for 80, 40 and 20 Meter-Band, by Herbert OE3BMB This antenna is a full size λ/4 for 20m and 40m band, and a shortened λ/4 for the 80m band. Generally on the 40m band the SWR is under 1,6. In 80m and 20m band at the resonant frequency the SWR is about 1,1.
    [ Hits: 4812 | Votes: 4 | Rating: 8.00 ]
  • QRP Antenna 80-40-20-15 End Fed Antenna - A long wire antenna that will load up on 80, 40, 20 & 15 meters without an antenna tuner and without balun coils
    [ Hits: 5559 | Votes: 4 | Rating: 6.25 ]
Antennas : Portable
  • The KJ5VW 20 Meter Mini Yagi - 2 element mini-yagi that weight less then 15 pounds, cost less than $30 dollars, can be disassembled into four-foot lengths by Gary R. Hanson, KJ5VW
    [ Hits: 5025 | Votes: 6 | Rating: 7.67 ]
Antennas : Repair and Maintenance
  • Delta Loop antenna maintenance - IK4DCS experience on maintaining a multiband delta loop antenna for 10/12/20 meters.
    [ Hits: 4098 | Votes: 1 | Rating: 5.00 ]
Antennas : Satellite
  • EZ-Lindenblad Antenna for 2 Meters - This easy to build antenna works well for satellite or terrestrial communication, horizontal or vertically polarized by Anthony Monteiro, AA2TX QST Article
    [ Hits: 6617 | Votes: 12 | Rating: 9.25 ]
Antennas : Shortwave
  • T2FD antenna - A T2FD antenna for 10-15-20 meters band
    [ Hits: 4636 | Votes: 15 | Rating: 6.00 ]
Antennas : Theory
  • Effects of Very Large Ground Screens - A theoretical and experimental study of the effects of very large ground screens on 20 meter verticals
    [ Hits: 318 | Votes: 0 | Rating: 0.00 ]
Antennas : Yagi DX Resources : Beacons : 10 meter beacons
  • W8NGA Beacon - 28.207 MHz 5 watts into a 10 meter Ringo
    [ Hits: 198 | Votes: 2 | Rating: 5.50 ]
DX Resources : Beacons : Beacon stations
  • N1KXR/B Ten-Meter Propagation Beacon - The N1KXR/B went on the air at 21:00 Hours EST on Saturday, November 22, 2008. This beacon is coordinated with the IARU Region 2 HF Beacon Coordinator and is located in Deerfield, Massachusetts USA
    [ Hits: 297 | Votes: 6 | Rating: 10.00 ]
Technical Reference : Amplifiers : VHF Amplifiers
  • A 20W Amplifier for 2 meters - VU2RAR basic VHF power amplifier suitable for 144-146 Mhz output power can vary from 3 to 25 Watts.
    [ Hits: 2680 | Votes: 5 | Rating: 6.60 ]
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