1:1 core balun

1:1 core balun

Antennas : Baluns

• UniBalun: Lightweight Balun/UnUn PCB for QRP Radios (1:1, 1:4, 1:49) - The UniBalun is a PCB for building a lightweight antenna transformer (Balun) or impedance converter (UnUn) for low power radios. By soldering jumpers and a toroid core, you can create a 1:1, 1:4 Balun or 1:49, 1:9 UnUn. The latest revision (1.2) includes improved pads and supports both BNC and SMA connectors. Build instructions are available for German speakers.
  [ Hits: 62 | Votes: 1 | Rating: 1 ]

• Guanella 1:1 VHF choke balun - A model of a Guanella 1:1 VHF choke balun using a FT140-61 core
  [ Hits: 3620 | Votes: 9 | Rating: 3.11 ]
• Air Cored 1:1 HF BALUN - An air cored 1:1 balun for 3.5 to 30.0 MHz
  [ Hits: 4183 | Votes: 7 | Rating: 3.57 ]
• Balun 1:1 - 1:1 Ruthroff voltage balun using a T200-2 Toroid core
  [ Hits: 1483 | Votes: 2 | Rating: 4 ]
• How to Build a UN-UN - Building a 1:1 balun, aka un-un, with an Amidon Ferrite toroid core T 200
  [ Hits: 1063 | Votes: 6 | Rating: 4.17 ]
• Sorbie Balun and Bottle Choke - Homebrew a 1:1 balun consistsing of 4+4 turns of mini coaxial cable over a large ferrite core by m0pzt
  [ Hits: 703 | Votes: 1 | Rating: 1 ]
• How to build a Coax Balun 1:4 and 1:1 - An air-wound balun made with coaxial cable can not become saturated because no powder iron or ferrite core is present. In this article author explains and compare coax baluns to ferrite baluns with comparison tables and detailed pictures
  [ Hits: 577 | Votes: 8 | Rating: 8.63 ]