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Antennas : Array
  • Effect of tower coupling on an array - It's well known that a nearby tower can affect the performance of a vertical array, this article by NK7U describe measurements and prove interaction.
    [ Hits: 950 | Votes: 0 | Rating: 0 ]
Antennas : Beverage
  • Modern Beverage Receiving Antenna - A helpful guide to building your own beverage-type low noise receiving antenna for broadband use. Easy, do-it-yourself suggestions to optimize directional performance, even if you lack a farm to put it on.
    [ Hits: 1629 | Votes: 2 | Rating: 5 ]
Antennas : End-Fed
  • End fed-Halfe-wave antenna - This type of antenna has same performance as a dipole, but requires only one single mounting point
    [ Hits: 7818 | Votes: 8 | Rating: 8.26 ]
Antennas : Feed Lines
  • All About Ham Radio Ladderline - Ladder Line Myths, Line Types, Spacing and Impedance, Length by KV5R
    [ Hits: 1152 | Votes: 2 | Rating: 9 ]
  • RF Transmission Line Loss Calculator - This calculator computes the matched line loss for a transmission line using a model calibrated from data for the transmission line types built in to the calculator. It also gives an estimate of the mismatched loss if the mismatch is specified.
    [ Hits: 579 | Votes: 2 | Rating: 1 ]
Antennas : Feed Lines : Choke
  • Homebrew RF chocke - Magnetic Longwire Balun - RF Choke to prevent hf currents on the feedline. This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.
    [ Hits: 3410 | Votes: 3 | Rating: 10 ]
Antennas : Helical
  • 80 m helical antenna - Prototype of a 80 meters helical antenna on a 6 meters squid pole by VK2TTL
    [ Hits: 4267 | Votes: 6 | Rating: 4.17 ]
Antennas : Towers
  • Measuring Tower Resonances - Some notes on measuring tower resonances by Rudy Severns, N6LF
    [ Hits: 801 | Votes: 0 | Rating: 0 ]
  • Tower interactions - A study on vertical-tower interactions by N6LF
    [ Hits: 757 | Votes: 0 | Rating: 0 ]
Internet and Radio : Sounds Manufacturers : Antennas
  • Antennas Store - antennas.us - All types of Military Antennas, Law Enforcement Antennas, Mobile Radio Antennas, GPS Antennas, Satellite Antennas, WLAN/Wi-Fi/WiMax Antennas, Cell Phones, TV, HDTV Antennas available and sold
    [ Hits: 1295 | Votes: 3 | Rating: 10 ]
Operating Modes : Morse code : Morse Key Collections
  • Simple CW keyer - OH7SV ultimatic type keyer with Dit priority
    [ Hits: 2894 | Votes: 1 | Rating: 1 ]
Radio Equipment : HF Transceivers : Yaesu FT-2000 Radio Equipment : VHF-UHF Handhelds : Yaesu VX-8R
  • Yaesu VX-8R at Dayton Hamvention - Yaesu vx-8r prototype quad-bander on display at the 2008 dayton hamvention. Youtube video
    [ Hits: 707 | Votes: 0 | Rating: 0 ]
Software : Circuit Design
  • IC-Prog Prototype Programmer - PIC Programmer software package that allows you to program all types of serial programmable Integrated Circuits using Windows 95/98/NT/2000/ME/XP
    [ Hits: 1219 | Votes: 5 | Rating: 5 ]
Technical Reference : Batteries
  • Batteries for Emergency Communications - The purpose of this paper is to provide a basic understanding of the different types of batteries available on the market today so the reader can make an educated decision about what type of battery will best meet their needs for Amateur Radio emergency communications Brett Hammond - KB3HGP
    [ Hits: 480 | Votes: 1 | Rating: 1 ]
Technical Reference : Coax Cables and Connectors
  • Assemble a N-connector - How to assemble a N-Type connector to a coax cable by diswire.com
    [ Hits: 2235 | Votes: 2 | Rating: 6 ]
Technical Reference : Grounding Technical Reference : Homebrew
  • QRP AM(cw) Transmitter for 10 meters - In this project, you will make a simple low-power broadcast-type circuit, using a crystal oscillator integrated circuit and an a collector modulated AM oscillator.
    [ Hits: 1239 | Votes: 2 | Rating: 10 ]
Technical Reference : Mic wiring
  • Icom microphone reference list - List of Icom microphones with connector type description and transceiver compatibility
    [ Hits: 5395 | Votes: 6 | Rating: 4 ]

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