trap

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trap

98 links - and 1 categories

Antennas : 12M
  • Trapped Dipole for 12 and 17 Meters  updated - A small sized and very cheap antenna project that allow you to work on WARC bands with a total gain very close to the dipole in both bands. On 12 meters is a normal dipole, while on 17 is a trapped dipole. Article in Italia
    [ Hits: 487 | Votes: 1 | Rating: 1 ]
Antennas : 80M
  • Top Loaded Vertical Antenna for 80 Meters Band - Top Loaded Vertical Antenna 3,5 MHz 80m and a 14 MHz Trap for the 20m band. The weight of this portable vertical antenna is less than 1 kg, including the ground network. The weight of the telescopic fiberglass fishing rod is another 1kg. The rod expands from 1.5 meters to 8 meters.
    [ Hits: 163 | Votes: 0 | Rating: 0 ]
Antennas : Dipole
  • A Co-ax Trap Dipole - A Co-ax Trap Dipole For 40, 30 and 20 Meters or at Llast that was the intention
    [ Hits: 771 | Votes: 2 | Rating: 4 ]
  • Simple 20-40 m Dipole Antenna - A simple TRAP-dipole project for 20 and 40m bands includes EZNec simulations
    [ Hits: 1460 | Votes: 2 | Rating: 9 ]
  • 20 40 80 Trapped Dipole - An homemade portable trapped dipole antenna for 40 and 80 meters band with an optional extension for the 20 meters.
    [ Hits: 1077 | Votes: 8 | Rating: 5.38 ]
  • Trapped Dipole for 15/20 Meters Bands - An easy to build dipole for 21 and 14 MHz with traps made by two T50-6 toroids cores mounted on a simple PCB foil
    [ Hits: 468 | Votes: 0 | Rating: 0 ]
  • Trapped Dipole Antenna for 20-30-40m - An 20 30 40 meters trapped dipole antenna plan for sota and portable operations.
    [ Hits: 125 | Votes: 1 | Rating: 10 ]
Antennas : End-Fed
  • Multiband trapped end fed antenna - A multiband trapped end-fed antenna can cover 20 30 40m bands. An option for portable sota operations were weight end simplicity are essential
    [ Hits: 619 | Votes: 0 | Rating: 0 ]
Antennas : Feed Lines : Choke
  • Trap on Coax Cable - A trap on the coaxial cable, also known as choke, helps to eliminate the sneaking of the reflected RF- energy to the shack. The trap can be made from the coaxial cable that feeds the antenna
    [ Hits: 731 | Votes: 0 | Rating: 0 ]
Antennas : Traps
  • Trap construction - Article and experimentation on multiband antennas of traps for 40 meters band
    [ Hits: 1242 | Votes: 4 | Rating: 4.75 ]
Antennas : Vertical
  • 20m 40m trapped squid pole antenna - An homemade portable vertical antenna with a trap near the mid point of the main element. The trap is made with 42mm diameter PVC pipe with 9 turns of wire on it
    [ Hits: 2688 | Votes: 5 | Rating: 5.2 ]
  • 7 Bands Semi Vertical Antenna - A project of a semi vertical trap antenna that can be tuned for 7 bands
    [ Hits: 1652 | Votes: 1 | Rating: 10 ]
  • OZ1CX - Multiband vertical antenna no tuner LC matched  updated - A 4-Band vertical antenna that needs NO tuner, NO traps. Implement an LC matched on 4 bands with relay switching.
    [ Hits: 818 | Votes: 1 | Rating: 8 ]
Antennas : W3DZZ
  • W3DZZ - 80 to 10 meter antenna - A schematic design of the W3DZZ antenna in portugues with description of trap building
    [ Hits: 2005 | Votes: 3 | Rating: 9.67 ]
  • A Low Cost Multi Band - W3DZZ trapped multi-band antenna, exposed in this practical wireless article
    [ Hits: 1620 | Votes: 2 | Rating: 9 ]
  • W3DZZ - a classic dipole heavily modified, - An easy to build multiband trapped dipole that can work well on short low bands for skip contacts
    [ Hits: 1728 | Votes: 4 | Rating: 5.75 ]
  • OH2EC Antenna - A trapped dipole antenna based on the orignal W3DZZ antenna design resonating on 80 40 20 15 10 meters
    [ Hits: 1188 | Votes: 2 | Rating: 5.5 ]
Operating Modes : NBEMS

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