wound antenna

wound antenna

Antennas : 160M

• A Practical Antenna for 160 Metres  ^pop - 140 feet of insulated wire, the first half of which (70 feet) is space wound on an insulated tube.
  [ Hits: 91271 | Votes: 45 | Rating: 6.59 ]
• The 160M Homebrew Vertical - The 160M "No Excuses" Homebrew Vertical is a 27 ft. vertical antenna, made from three 10 ft. PVC sections bolted together, and half wavelength of antenna wire helically wound around the PVC sections by K6MM
  [ Hits: 6587 | Votes: 15 | Rating: 6.14 ]
• The 160M No Excuses Homebrew Vertical - This antenna is designed for stations having a difficult time putting a decent signal on 160M from small or CC&R d lots. It is a 24.5 ft. vertical antenna, made from three 10 ft. PVC sections bolted together, and half wavelength of antenna wire helically wound around the PVC sections.
  [ Hits: 405 | Votes: 0 | Rating: 0 ]

• Helically wound antenna for 40m - A helically wound vertical antenna experiment. 14 meter of wire wounded on a 8 meter fishing pole with 4 elevated radials
  [ Hits: 539 | Votes: 2 | Rating: 9 ]

• 2 Element Helical Yagi Beam for 40m - A helically wound two element 40 meter yagi beam antenna from a 1974 QST article
  [ Hits: 6662 | Votes: 17 | Rating: 6.52 ]

• An Improved Multiband Trap Dipole Antenna - This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps by W8NX
  [ Hits: 8727 | Votes: 5 | Rating: 6 ]

• End-Fed 6-40 M Multiband Antenna - This project produces an inexpensive, multiband, end fed HF antenna matchbox, quick and easy to setup. This project creates a trifilar wound, 9:1 UNUN toroid matching transformer. Handles 100W and need an antenna tuner.
  [ Hits: 1996 | Votes: 4 | Rating: 8.25 ]

• End Fed Half Wave Antenna Coupler - A home made end-fed half-wave antenna coupler with antenna lenght calculator and counterpoise calculator based on center frequency. Includes pictures and drawings along to antenna homebrewing instructions with a home made on air wound transformer
  [ Hits: 282 | Votes: 0 | Rating: 0 ]

• Do not wind chokes on red toroids! - I happened to stumble across some antenna projects showing common mode chokes 1:1 baluns made of some turns of coax wound on T200-2 iron powder toroids.
  [ Hits: 187 | Votes: 0 | Rating: 0 ]

• Helical Antennas -Theory - Helical antenna or helix antenna is the antenna in which the conducting wire is wound in helical shape and connected to the ground plate with a feeder line. It is the simplest antenna, which provides circularly polarized waves.
  [ Hits: 137 | Votes: 0 | Rating: 0 ]

• HF Receive Antenna - This page describes a couple of parts box medicine bottle antennas that you can build. The ground side of the capacitor is soldered to the ground of the BNC connector. The positive side of the capacitor takes 5 turns around the toroid and is soldered back to itself. The center pin of the BNC connector takes 5 turns around the toroid and then continues on to the wire wound inductor. From there the antenna continues with an attached piece of wire.
  [ Hits: 191 | Votes: 2 | Rating: 3 ]
• RX Loop antenna - This loop antenna is intended to be connected as an antenna for receivers that do not have a built-in antenna such as an HF set or an old tube radio. This square barrel is wound on a wooden frame. It consists of two windings that are galvanically isolated from each other, a main and a coupling winding. The diameter is about 40 cm.
  [ Hits: 60 | Votes: 0 | Rating: 0 ]

• Long Loopstick Antenna - Wound on a 3 foot length of PVC pipe, the long loopstick antenna was an experiment to try to improve AM radio reception without using a long wire or ground.
  [ Hits: 4376 | Votes: 1 | Rating: 10 ]

• Petlowany Antennas by K6NO - WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length
  [ Hits: 3765 | Votes: 9 | Rating: 6.22 ]

• Performance of 49:1 Ferrite Core Transformers - There are quite a few recipes for building a suitable transformer for an end fed half wave antenna (EFHW), but I was never sure I really understood the main principles. So, I wound a bunch of transformers, made measurements on them using my NanoVNA, learned how to get what I really wanted out of the VNA measurements, and in the process discovered how to build better transformers and be able to predict what they will do
  [ Hits: 151 | Votes: 4 | Rating: 7 ]

• CoaxTrap - This program let you design of antenna trap using length of coaxial line wound as solenoid on a coil former.
  [ Hits: 5525 | Votes: 10 | Rating: 3.7 ]

• How to wind a choke - How to build and properly wound an efficient RF choke to protect antenna controller in mobile setups
  [ Hits: 432 | Votes: 0 | Rating: 0 ]