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• 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: 3743 | Votes: 9 | Rating: 6.22 ]
• N0LX Petlowany Antenna Experiment - An attempt to modify and try out the unusual antenna first described by Bill Petlowany, K6NO, in World Radio Magazine
  [ Hits: 2313 | Votes: 6 | Rating: 7.5 ]

• UK CB Radio.org.uk - Set up for CB radio users in the UK and also world wide to exchange knowledge and experiences, generally hang out, with relevant news, articles, downloads and gallerys.
  [ Hits: 624 | Votes: 3 | Rating: 9.33 ]

• Exploring the world of 10 Meter Beacons - Monitoring times article by KS4ZR about ten meters beacon monitoring
  [ Hits: 3112 | Votes: 7 | Rating: 7.86 ]

• Dokufunk QSL Collection - The Research and Documentation Center for the History of Radio Communications and the Electronic Media (our full name) is the world's biggest organization to collect, save, research and present whatever relates to the history of radio communications, particularly amateur radio and broadcasting
  [ Hits: 926 | Votes: 0 | Rating: 0 ]

• Timewave - Sells leading-edge voice and digital communications products to the world-wide military, government, industrial, and amateur radio marketplaces. Bluetooth Remote Audio/PTT, Rig Controller with Audio & PTT , HamLinkUSB Rig Control, Noise filtersm antenna analyzers, Multimode Data Controller, TNC, Packet Radio Terminal Node Controller. USB2RS232
  [ Hits: 4044 | Votes: 3 | Rating: 5.33 ]

• Lightning Protection International - LPI personnel have combined experience over many years in servicing customers throughout the world. Our experience covers projects in some of the most lightning prone areas.
  [ Hits: 536 | Votes: 2 | Rating: 1 ]

• Astrodyne - Dedicated to the design, manufacturing, technical support, and delivery of innovative and cost effective power solutions for worldwide applications. AC/DC switching power supplies and DC/DC converters.
  [ Hits: 672 | Votes: 0 | Rating: 0 ]

• Feld-Hell Club - Club dedicated to the world of Hellschreiber
  [ Hits: 1956 | Votes: 3 | Rating: 4 ]

• MB7ICL Echolink node - MB7ICL Echolink Node Clacton on Sea, Essex The Gateway to the world
  [ Hits: 507 | Votes: 3 | Rating: 10 ]

• Long Wave Radio - The World of LF, by G3YXM reference site for longwave operations. Introduction to operating on 136 and 501 Khz
  [ Hits: 614 | Votes: 1 | Rating: 1 ]
• Low Frequency operations by W3EEE - A squint at the world of LF This website was initially thrown together to provide ready availability to data being collected from the measurement of a transatlantic LF (Low Frequency) path.
  [ Hits: 460 | Votes: 0 | Rating: 0 ]

• The World above 1000 MHz - G3PHO website dedicated to the microwaves operations
  [ Hits: 305 | Votes: 0 | Rating: 0 ]

• ON7KEI SSTV Site - Dedicated to SSTV and live reception from all over the world
  [ Hits: 473 | Votes: 2 | Rating: 10 ]

• The View From The Tower - The workaday world of antenna & tower projects. Posted by K4ZA, Tower Works, Charlotte NC.
  [ Hits: 518 | Votes: 0 | Rating: 0 ]

• DNJ Radio - Locate in the Silicon Valley, the DNJ Radio is dedicated to delivering Ham radio and CB radio equipments to the enthusiasts around the world.
  [ Hits: 1351 | Votes: 3 | Rating: 7 ]

• CQ World Wide Contest Log - Windows shareware contest log program for the CQ WW DX contest. The contest log software offers a Network version capable to run over a local area network in order to allow several pc to update a single shared contest log file. Windows XP through Windows 10.
  [ Hits: 713 | Votes: 0 | Rating: 0 ]

• RDXCluster - RDXCluster is a free windows telnet client for worldwide DX packet Cluster,featuring multiple spot windows, Band/Mode DXCC window, DX History window, Top DX window, Find, highlights, filters the spot by Roberto Verrini
  [ Hits: 2426 | Votes: 1 | Rating: 10 ]

• BeamFinder - BeamFinder is a software tool designed to conduct analyses for radio amateurs interested in radio propagation studies. It provides a large 2500 x 1800 pixel screen map of the world which displays calculated results from sophisticated models, dx data and other sources of information
  [ Hits: 2398 | Votes: 1 | Rating: 10 ]

• When negative meets positive - Lightning can be a serious hazard depending where you live in the world. Chances are that if you living in an area where lightning strikes are common and you have a communications antenna, it may be attracted to you.
  [ Hits: 405 | Votes: 1 | Rating: 9 ]

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