3d design

3d design

Antennas : End-Fed

• End Fed Antenna for WARC Bands - I used a FT 240-43 for much more power, not needed but beter safe than sorry. 150 Watt continious, 300 Watt PEP SSB, 90 Watt Digimodes 10 Mhz, 18 Mhz, 24 Mhz Very easy to build design and a good antenna for people who don't have much space for big towers or long wires This design is from Hans - PE1RNU
  [ Hits: 187 | Votes: 1 | Rating: 3 ]
• Multi-Band End-Fed Antenna Design for Limited Space  ^new - This document details the construction of a multi-band end-fed antenna, suitable for situations with limited space for larger antennas. The design utilizes a 1:49 to 1:60 impedance transformer to match a half-wave wire antenna fed at one end. Compared to a traditional dipole, this antenna resembles a highly unbalanced Windom antenna with one very long leg and a virtual short leg. The design eliminates the need for radials but relies on the coax cable shield for grounding. The document recommends using at least 10 meters of coax and installing a common mode filter at the entry point to the shack for improved performance.
  [ Hits: 76 | Votes: 0 | Rating: 0 ]

• 2 Meters Lindenblad Antenna - 3d parts printed to build an EZ-Lindenblad 2 Meters LEO Sat antenna as designed from Anthony Monteiro
  [ Hits: 1421 | Votes: 2 | Rating: 4 ]

• A Hanging Rectangular Loop Antenna - A rotatable hanging loop antenna that has been specifically designed for hanging in a tree. Horizontally polarized with a broad azimuth pattern and gain of nearly 3dB over a simple horizontal dipole!
  [ Hits: 3867 | Votes: 10 | Rating: 7.41 ]

• Build the K1FM-Loop - The latest version of the K1FM-Loop is electrically similar to the previous one, but it is designed around off-the-shelf parts or, more generically, items you can readily order online. This antenna relies heavily on 3D printing.
  [ Hits: 102 | Votes: 0 | Rating: 0 ]

• Video of a W3DZZ Trapped Antenna - Video construction of a multiband HF trapped dipole antenna based on a variation of the classic W3DZZ design
  [ Hits: 3211 | Votes: 0 | Rating: 0 ]
• W3DZZ - 80 to 10 meter antenna - A schematic design of the W3DZZ antenna in portugues with description of trap building
  [ Hits: 2588 | Votes: 7 | Rating: 6.72 ]
• OH2EC Antenna - A trapped dipole antenna based on the orignal W3DZZ antenna design resonating on 80 40 20 15 10 meters
  [ Hits: 1502 | Votes: 5 | Rating: 8.2 ]

• RF HAMDESIGN - An engineering oriented organization specializing in the design and manufacture of high performance parabolic antennas, 3dB high power RF couplers, Antenna power splitters, directional RF couplers and more items for RF transmission from HF through Microwave frequencies.
  [ Hits: 1616 | Votes: 5 | Rating: 9 ]

• PolarPlot - Freeware antenna software that lets you see what the polar diagram of your rotatable beam actually looks like where it is operating. With PolarPlot you can measure the polar diagram of the antenna and check for abnormalities - compare plots taken before and after changes to the design or location - check the -3dB beamwidth - look at the front to back ratio - see the size and position of the sidelobes.
  [ Hits: 5986 | Votes: 10 | Rating: 5.59 ]
• Nec2Go - Powerful antenna modeling tool using NEC 2 computing engine. Nec2 specifically provide users, either those experienced with the Nec2 processes, or for those who are neophytes but want to model their own antennas. Nec2Go uses a simplified process for defining the antenna structure and then providing view of the structure, plots (2D and 3D) and other significant data that is pertinent to the design. This simplified process uses an edit file with equations for all definitions.
  [ Hits: 1953 | Votes: 1 | Rating: 5 ]

• 3D Printer Makes Ham Antenna Portable - An end fed antenna winder design that also contains the necessary matching toroid. This would be just the thing to throw in your backpack for portable operation.
  [ Hits: 217 | Votes: 0 | Rating: 0 ]

• Mini Satellite-Antenna Rotator Mk2 - Design and construction of a mini satellite-antenna rotator. It used some small DC motors and a novel combination of 3D magnetometers and accelerometers to provide absolute azimuth and elevation feedback.
  [ Hits: 493 | Votes: 3 | Rating: 4 ]

• VK5TM Noise Canceller - Noise Canceller kit originally developed about 1989 by G4WMX and GW3DIX and improved by DK9NL and DG0KW.The VK5TM Noise Canceller is another version of the design, with the HF Vox circuit removed and a couple of other minor changes, including the use of SMD JFETs and a double-sided pcb.
  [ Hits: 476 | Votes: 1 | Rating: 10 ]