antenna 40 m

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371 links - and 2 categories

Antennas : 10M
  • 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: 69400 | Votes: 34 | Rating: 4.90 ]
Antennas : 160M
  • 160 meter linear loaded Inverted L antenna - The total length of the inverted L is 240 feet, which is 7/16th of a wave length long. It has a 92 foot horizontal linear load section 1 foot above ground that terminates into a home-brewed parallel network tuner by KN4LF
    [ Hits: 3612 | Votes: 5 | Rating: 5.60 ]
Antennas : 30M Antennas : 40M
  • W1ZY 40 meter moxon antenna - W1ZY's 40 Meter MOXON is the product of 9 months of experimentation. The final array is reversible and constructed from No. 12 insulated wire fed through two RF current baluns
    [ Hits: 2595 | Votes: 2 | Rating: 6.00 ]
  • 40-meter Rectangular Loop Antenna - A 40-meter antenna that provides good local and regional coverage during the day and good DX capability at night
    [ Hits: 1120 | Votes: 1 | Rating: 5.00 ]
  • JA7KPI Windom antenna for 40-80 - The total length of this antenna is 41m, height is about 11m, and diameter of element is 2mm. JA7KPI modified this antenna originally used as Inverted-V type of 80m band Dipole. Works on 40 - 80 meters band with acceptable swr.
    [ Hits: 6440 | Votes: 4 | Rating: 6.25 ]
  • 40 meter double bazooka antenna - A double bazooka antenna plan for the cw portion of the 40 meter band by k0ru
    [ Hits: 8411 | Votes: 14 | Rating: 5.22 ]
  • Shortened vertical antenna for 7 Mhz - A simple drawing of a shortened antenna for 40 meters by using a PVC tube
    [ Hits: 2718 | Votes: 2 | Rating: 4.50 ]
  • Trapped dipole for 80 and 40 m - This article explores a theoretical model for the losses of an 80m / 40m trapped inverted V dipole antenna system using a bootstrap coax trap, but does not examine the pattern of the antenna.
    [ Hits: 2433 | Votes: 0 | Rating: 0.00 ]
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: 4662 | Votes: 4 | Rating: 7.00 ]
Antennas : Fan Dipole
  • QRP Fan Dipole - Attic dipole antenna that allow to operate QRP from 40 metres to 10 metres, specifically 40, 20, 17, 15 & 10 metres by M0WYM
    [ Hits: 7106 | Votes: 5 | Rating: 8.40 ]
Antennas : Indoor
  • Shortened antennas - Drawings of shortened antenna for indoor usage, using short pvc tubes for 2 , 20 and 40 MHz by f1rfm
    [ Hits: 5597 | Votes: 2 | Rating: 5.00 ]
Antennas : Magnetic Loop
  • HF Magnetic Loop Antenna - Local and DX contacts from tight spaces, it works from 40 to 17 meters
    [ Hits: 2134 | Votes: 2 | Rating: 7.00 ]
Antennas : Multiband
  • 6-Band Windom antenna  pop - Theory and construction of a novel trapless center-loaded off-center-fed (cl-ocf) dipole or windom antenna for the 80, 40, 30, 20, 15 and 10m hf amateur radio bands
    [ Hits: 43858 | Votes: 31 | Rating: 6.32 ]
  • JJ6 Antenna - Beam antenna for 14-18-21-24-28-50 Mhz by G4ZU in french
    [ Hits: 1287 | Votes: 1 | Rating: 1.00 ]
  • 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: 4627 | 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: 5313 | Votes: 4 | Rating: 6.25 ]
Antennas : Portable
  • Musings on the Miracle Whip design - A modified design of this popular portable antenna The whip described here will tune up to a respectable SWR on 40 metres and up.
    [ Hits: 1117 | Votes: 0 | Rating: 0.00 ]
  • A Q&D Multiband Antenna - A brick, some PVC tubing and a few other common hardware store items can be transformed into an effective Quick & Dirty RF-launcher—for less than $25! By Michael Atlas, N7FC
    [ Hits: 1383 | Votes: 0 | Rating: 0.00 ]
Antennas : Quad
  • BiQuad Antenna for 144/440  updated - This is a vertically polarized Broadside and Collinear Array each Loop is a vertically polarized Broadside Array both the right and the left side of the Loop is a bent 1/2 wave dipole working 180 degrees out of phase with the other one and that gives you 4.15dbi of gain by KE4UYP
    [ Hits: 6172 | Votes: 12 | Rating: 5.00 ]
Antennas : Satellite
  • 2400 MHz Helix Antenna - This antenna is easy to build and suitable for broadband work, satellite work and terrestrial work.
    [ Hits: 8280 | Votes: 8 | Rating: 7.50 ]
Antennas : Vertical Antennas : Windom
  • Windom for 80-40-20-10 m - A windom multiband antenna for 80 40 20 and 10 meters band. Include picture for a 1:6 Balun. In french
    [ Hits: 7242 | Votes: 11 | Rating: 5.18 ]
Manufacturers : Antennas : VHF UHF Microwave : Microwave antennas
  • Makidenki - Transvertes, AO-40 Convertes, FM-TV transmitters UHF loop antennas
    [ Hits: 1219 | Votes: 0 | Rating: 0.00 ]
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