hf radio

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hf radio

637 links - and 12 categories

Antennas : Baluns : 1 to 1 Balun
  • Simple HF Baluns for 50/75 ohm coax - Show diagrams, winding methods and tables of some 1:1 and 4:1 baluns for 1.8 - 30 MHz suitable for use up to 200W (400W peak) on systems using 50 or 75 ohm coaxial cable input where SWR should not exceed 1.6:1.
    [ Hits: 15202 | Votes: 25 | Rating: 4.32 ]
Antennas : J-Pole Antennas : Quad
  • VHF/UHF Quad Antenna - Article by N6JSX on homebrewing quad antennas for VHF and UHF.
    [ Hits: 4738 | Votes: 4 | Rating: 5.25 ]
Antennas : Rhombic Antennas : Stealth
  • HF antenna for high rise dwellers - If you have ever tried transmitting on HF from a tall block of apartments, where it's just not possible to erect a substantial aerial system, then this article is for you
    [ Hits: 5014 | Votes: 5 | Rating: 7.92 ]
Antennas : Towers
  • Ham Radio Tower at N0HR - Ham Radio Tower Project at N0HR. Includes site plan, escavation, tower construction, HF antennas, grounding and lightning protection, coax and more.
    [ Hits: 2962 | Votes: 2 | Rating: 8 ]
Antennas : Tuners
  • A Portable Antenna Matching Unit - A small HF antenna tuner project for qrp operations. Includes circuit diagrams pictures and test results by GW4ALG
    [ Hits: 15342 | Votes: 7 | Rating: 5.14 ]
Antennas : Vertical Ham Radio : Band Plans
  • US Band Plan by ICOM - ICOM USA Amateur Radio HF VHF/UHF band plan updated to 2008, include a Common Country prefixes in PDF Format
    [ Hits: 3767 | Votes: 9 | Rating: 6 ]
Ham Radio : Blogs : Europe
  • EA7HFG Javier - Amaterur radio blog from Cordoba Spain
    [ Hits: 303 | Votes: 1 | Rating: 10 ]
Ham Radio : Blogs : USA
  • The K0NR Weblog - Stuff about amateur (ham) radio, especially VHF/UHF, QRP, portable and mountaintop operating
    [ Hits: 306 | Votes: 0 | Rating: 0 ]
Ham Radio : Clubs : North America : Canada : British Columbia Internet and Radio : Sounds Manufacturers : Antennas : VHF UHF Microwave
  • Duplexers.eu - We produce duplex filters for 6 m, 2 m, 70 cm, and 23 cm band but also for HF bands. Sella and produce products for Ham Radio Repeaters.
    [ Hits: 1899 | Votes: 1 | Rating: 1 ]
Operating Modes : DSP
  • Digital Modes used in Ham Radio - Article with waterfall pictures and samples of several digital modes like psk31, sstv packet pactor hellschreiber domino thor jt65 and more
    [ Hits: 1129 | Votes: 3 | Rating: 7.67 ]
Operating Modes : MFSK
  • Olivia, the Magic Digital Mode - Olivia MFSK digital communications are becoming popular in amateur radio because Olivia is one of the most robust methods of text keyboarding, that can perform superbly for long distance communications. Olivia frequencies, format and software
    [ Hits: 1931 | Votes: 8 | Rating: 8.38 ]
Propagation : Resources
  • Is HF propagation reciprocal - Some test circuits using the ACE-HF System Simulation & Visualization software, about reciprocal propagation on HF bands by NW7US
    [ Hits: 520 | Votes: 1 | Rating: 7 ]
Radio Equipment : VHF-UHF Handhelds Technical Reference : Sound Card Radio Interfacing
  • ICOM Soundcard Interface - IC820H or other Icom Radios Soundcard interface for VHF EME use by DF9CY
    [ Hits: 1495 | Votes: 0 | Rating: 0 ]
Technical Reference : TVI Filters

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