hf antenna

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hf antenna

767 links - and 22 categories

Antennas : CobWeb
  • DIY CobWebb Antenna - A DIY guide to build your own compact multiband HF antenna based on the G3TXQ version using a 1:4 balun. This article includes the full part list and instructions to assembly, including the center plate.
    [ Hits: 1002 | Votes: 6 | Rating: 7.5 ]
Antennas : Delta loop
  • HF multi-band Delta loop antenna - A delta loop antenna that can be tuned all over HF bands with the help of a Icom AH-4 external antenna tuner.
    [ Hits: 2527 | Votes: 19 | Rating: 5.73 ]
Antennas : Fan Dipole
  • The Fan Dipole A valuable multi-band HF antenna - The fan dipole antenna as an alternative to the paralled dipole antenna, to achieve a larger bandwidth and a better tuning by decreasing elenment influences.A project based on the W6HDG original concept.
    [ Hits: 744 | Votes: 6 | Rating: 6.67 ]
Antennas : Homebrewing Techniques
  • Wire Antenna Design Lengths - The Classic Numbers for All Types of Wire Antennas at HF. Wire antennas need to be made a bit long and cut to resonance. They are affected by height above the ground and surrounding objects. In order to get an idea of the right place to start, certain formulas are generally accepted.
    [ Hits: 327 | Votes: 1 | Rating: 7 ]
Antennas : Loop
  • Horizontal Loop Antenna Experiments - The HF horizontal loop has been around for many years now. This article includes a YouTube video and discusses the reasons for looking at this antenna, its design, and its installation. There are some on-air comparisons against three regular double bazooka (coax) dipoles and the Par SWL End-Fed antenna.
    [ Hits: 926 | Votes: 5 | Rating: 8 ]
Antennas : Magnetic Loop
  • A Small Loop for 20 and 15 meter band - A Small Transmitting Loop Antenna for 14MHz and 21MHz, an antenna you might consider if you have limited space, Based on material originally published in Amateur Radio, November 1991
    [ Hits: 421 | Votes: 0 | Rating: 0 ]
Antennas : Mobile
  • An HF Mobile Antenna - An home made HF mobile multiband antenna inspired by the KM4IE HF 20 dollars antenna or the Texas Bugcatcher can work 75 to 15 meters band with an acceptable SWR.
    [ Hits: 810 | Votes: 0 | Rating: 0 ]
Antennas : Portable
  • Portable wire antennas - This document describe serveral wire antennas, from the folded dipole, to the common halfwave monoband antenna for those who want to make HF portable operations in holiday.
    [ Hits: 839 | Votes: 2 | Rating: 1 ]
Antennas : Receiving Antennas : Tuners
  • Z-match ATU covering 160m - 10m - An home made Z-Match antenna tuner unit that cover all HF bands between 10 and 160 meters
    [ Hits: 1564 | Votes: 3 | Rating: 8 ]
Antennas : VHF UHF
  • Dual Band VHF UHF Yagi Antenna projects - On this page are designs for Dual Band 2M / 70cm antennas. All antennas are 50 ohm designed driver. These Yagis have a unique element called a Open Sleeve. 4 Element 5 element and 9 element Dual Band - 2M / 70cm antenna projects
    [ Hits: 752 | Votes: 4 | Rating: 5.75 ]
  • ZigZag Antenna - VHF/UHF unconventional antennas - An unconventional antenna family, the VHF/UHF Zigzag Dipole Antennas. Design, theory and practical construction, transformation and balancing with a half wave balun.
    [ Hits: 745 | Votes: 2 | Rating: 8.5 ]
Antennas : Yagi
  • 3 Element Yagi Antennas for 144 MHz SSB-CW - A great and efficient monoband VHF portable antenna. The article consist of two version of a 12.5 Ohm 3 elements yagi beam antenna plans for the two meter band, a full sized and a shortened version expecially designed for the SSB and CW on 144 MHz.
    [ Hits: 426 | Votes: 4 | Rating: 8 ]
Internet and Radio : WebSDR
  • WEB SDR - ROME - Listen to the online web sdr in Rome Italy. A kiwisdr project using a vertical antenna and dipoles for HF bands.
    [ Hits: 647 | Votes: 4 | Rating: 8.75 ]
Manufacturers : Antennas : VHF UHF Microwave : Quad Antennas
  • Status Quad - Amateur radio Quad Antennas manufacturer based in Italy produce HF and VHF Quad antennas, and spare parts.
    [ Hits: 453 | Votes: 0 | Rating: 0 ]
Propagation : NVIS Propagation
  • NVIS Propagation - Near Vertical Incidence Skywave propagation is a form of radio wave propagation used on the MF and HF bands to provide radio communications and broadcasting coverage over short distances, especially where the terrain contains obstacles.
    [ Hits: 446 | Votes: 1 | Rating: 10 ]
Radio Equipment : Reviews and Comparisons
  • Diamond CP22E Review - Diamond Antenna CP22E VHF base station antenna review. This antenna has a remarkable design achieving 5 dBi directivity in a slim low-profile design.
    [ Hits: 477 | Votes: 0 | Rating: 0 ]
Software : Antenna analysis
  • YagiCAD - A freeware windows antenna design and modelling software developed by an amateur radio operators primarily intended for VHF yagi aerials.
    [ Hits: 775 | Votes: 4 | Rating: 3.75 ]
Technical Reference : Antenna Switch
  • Outdoor HF Antenna Switch - The antenna swtich was designed to assist with antenna comparisons mande with a IP56 rated box
    [ Hits: 773 | Votes: 0 | Rating: 0 ]
Technical Reference : Repeater
  • Cross Band Repeaters - Crossband Repeating is a process where a Ham transmits one signal on one band (typically UHF), and it is received by another radio with a better antenna/power installation, and re-transmitted (typically on VHF) to another radio system, or a repeater. Everyday examples of cross-band repeaters are repeater receive sites that hear the input signals on 2m and retransmit those signals on a frequency higher than 220 MHz.
    [ Hits: 206 | Votes: 0 | Rating: 0 ]

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