70 vertical

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70 vertical

20 links

Antennas : 20M : 20 meter Vertical Antennas

Antennas : 4M
  • Vertical half-wave aerials for 4m - Practical designs pictures and alternative design of antennas for 70 Mhz by Ross Wilkinson G0WJR
    [ Hits: 8416 | Votes: 16 | Rating: 5.12 ]
  • A comparison of commercial 4m verticals - Ian Hogan G6TGO has recently tried out two different commercially-built vertical aerials for 4m, and has prepared this article to share his findings with us.
    [ Hits: 1133 | Votes: 0 | Rating: 0 ]
Antennas : 6M : 6 meter J-Pole Antenna
  • Simple 50MHz J-Pole Antenna EA7AHG - Based on the popular DK7ZB simple 50 MHz Jpole antenna, this customized jpole project has been analized with MMANA-GAL and reproduced for six meters, two meters and 70 cm bands.
    [ Hits: 276 | Votes: 1 | Rating: 4 ]
Antennas : 70cm
  • Antenne Topfkreis - A simple vertical antenna for 70 cm band
    [ Hits: 2210 | Votes: 4 | Rating: 3.75 ]
  • 70cm vertical antenna - Schematic for a DIY 70 cm vertical antenna
    [ Hits: 3854 | Votes: 14 | Rating: 3.5 ]
  • Coaxial Collinear Antenna for 70 CM Band - This coaxial collinear antenna was built to test for my own consumption whether or not this antenna method actually works. the guiding principle is that we have multiple 1/4 wave elements fed in series , the radiation from each adds in phase to produce a large vertically polarised omni-directional antenna with substantial gain
    [ Hits: 563 | Votes: 3 | Rating: 6.33 ]
  • Cross-Yagi 10el Antenna for 70cm - 10 Elements Cross-Yagi Antenna for 433 MHz. The base of the 10el antenna is the recalculated RA6FOO antenna.Circular polarization is realized - by a phasing quarter-wave line, matching of horizontal and vertical polarization antennas
    [ Hits: 172 | Votes: 6 | Rating: 8.83 ]
Antennas : Baluns Antennas : Helical
  • Mixed Mode Helical Antenna - An experimental omni-directional antenna for 70cm which has both horizontal and vertical gain
    [ Hits: 1004 | Votes: 3 | Rating: 8 ]
Antennas : J-Pole
  • A J-Pole for 2-meters and 70-cm  pop - An Easy Dual-Band VHF/UHF vertical Antenna made with a TV twin lead and coax cable
    [ Hits: 103645 | Votes: 135 | Rating: 5.97 ]
Antennas : Lindenblad
  • 70 cm Lindenblad Antenna - The antenna is a vertical dipole, around which four parasitic elements are forming a circle.
    [ Hits: 1941 | Votes: 2 | Rating: 2.5 ]
Antennas : Repair and Maintenance
  • EI7BA's Amateur Radio Pages - Multi Band Quad,Cushcraft R5, R7, R7000, repair and maintenance, Remote Antenna Switching, Hexagonal Beam, Automatic Band Decoder, Low Band Verticals, Crank-up Tiltover Tower etc
    [ Hits: 14011 | Votes: 20 | Rating: 7.6 ]
Antennas : VHF UHF
  • Vertical antenna for 2 mt and 70cm  pop - How to Build a Dual-Band Antenna for 2M/70cm presentation PDF file
    [ Hits: 28701 | Votes: 49 | Rating: 6.26 ]
  • VHF/UHF Folded Diplole - This is a two element colinear design for vertically polarized radiation. It may be constructed for use on either 2m or 70cm
    [ Hits: 1139 | Votes: 0 | Rating: 0 ]
  • FBK 2m-70cm dualband coax antenna - A travel, or a fixed vertical coax antenna originally designed by PA0FBK. This antenna is very easy to make from a piece of 50 ohm or 75 ohm coaxial cable, and can be either smooth, roll-up version, or rigid cable
    [ Hits: 345 | Votes: 3 | Rating: 9.33 ]
Antennas : Vertical
  • VHF UHF Slim Jim Antenna - A vertical monoband antenna design that can work from 6 meters to 70 cm by F5ZV in French
    [ Hits: 1489 | Votes: 5 | Rating: 3 ]
Radio Equipment : HF Transceivers : Icom IC-7700
  • IC-7700 as a bench spectrum analyser - The Icom IC-7700 spectrum scope feature a minimum resolution bandwidth of just 100 Hz and provide also an accurate vertical amplitude tracking permitting to use the 7700 as a bench spectrum analyser.
    [ Hits: 179 | Votes: 0 | Rating: 0 ]
Radio Equipment : Reviews and Comparisons
  • Comparison of 4m Antennas - A comparison of commercial 4m verticals by by Ian Hogan G6TGO
    [ Hits: 333 | Votes: 0 | Rating: 0 ]
Software : Antenna analysis
  • NEC4WIN - NEC4WIN is a 32 bits commercial antenna simulation software based on MININEC3 developed by the Naval Ocean Systems Center in the 70s and 80s. It runs under Windows and can be used to simulate, analyze and optimize wire antennas, beams, verticals, etc. NEC4WIN has limitations. They are the same as Mininec3 on which the engine is based.
    [ Hits: 1872 | Votes: 2 | Rating: 7 ]

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