antenna 40 m

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antenna 40 m

505 links - and 10 categories

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: 3341 | Votes: 2 | Rating: 6 ]
  • 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: 7709 | Votes: 8 | Rating: 6.25 ]
  • 40 meter double bazooka antenna - A double bazooka antenna plan for the cw portion of the 40 meter band
    [ Hits: 9273 | Votes: 20 | Rating: 5.5 ]
Antennas : 40M : 40 meter Dipole Antennas
  • Rotary Dipole for 30 and 40 meters band - Drawings pictures and notes on a rotary dipole antenna for 30 and 40 meters band
    [ Hits: 10398 | Votes: 1 | Rating: 2 ]
  • 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: 2730 | Votes: 0 | Rating: 0 ]
Antennas : 40M : 40 meter Loop Antennas
  • 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: 2245 | Votes: 2 | Rating: 3.5 ]
Antennas : 40M : 40 meter Vertical Antennas
  • 40m broadband vertical antenna - A loopy loop loaded vertical antenna operating range 7.0 to 7.3 MHz by S. C. Chuck Smith, WA7RAI
    [ Hits: 6566 | Votes: 15 | Rating: 7.52 ]
  • Backyard 7 Mhz Vertical - A vertical antenna for 40 meters band by PA5MW
    [ Hits: 1322 | Votes: 0 | Rating: 0 ]
  • 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: 81568 | Votes: 55 | Rating: 5.01 ]
  • A 30/40 meters band vertical anetnna - A shortened 30/40 meters band vertical antenna in italian
    [ Hits: 7605 | Votes: 1 | Rating: 1 ]
Antennas : Fan Dipole
  • QRP Fan Dipole - Attic Fan dipole antenna that allow to operate QRP from 40 metres to 10 metres, specifically 40, 20, 17, 15 & 10 meter band
    [ Hits: 8485 | Votes: 8 | Rating: 5.63 ]
Antennas : Indoor
  • Shortened antennas - Drawings of shortened antenna for indoor usage, using short pvc tubes for 2 , 20 and 40 MHz by f1rfm
    [ Hits: 6845 | Votes: 3 | Rating: 4 ]
Antennas : Magnetic Loop
  • HF Magnetic Loop Antenna - Local and DX contacts from tight spaces, it works from 40 to 17 meters
    [ Hits: 2426 | Votes: 2 | Rating: 7 ]
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: 50557 | Votes: 45 | Rating: 6.82 ]
  • JJ6 Antenna - Beam antenna for 14-18-21-24-28-50 Mhz by G4ZU in french
    [ Hits: 1554 | Votes: 2 | Rating: 1 ]
  • 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: 5033 | Votes: 4 | Rating: 8 ]
Antennas : Portable
  • 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 and Dirty RF-launcher for less than $25! By Michael Atlas, N7FC
    [ Hits: 1835 | Votes: 0 | Rating: 0 ]
Antennas : Quad
  • BiQuad Antenna for 144/440 - 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: 7589 | Votes: 14 | Rating: 4.86 ]
Antennas : Satellite
  • 2400 MHz Helix Antenna - This antenna is easy to build and suitable for broadband work, satellite work and terrestrial work.
    [ Hits: 8805 | Votes: 8 | Rating: 7.5 ]
Antennas : Vertical

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