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Antennas : End-Fed : End Fed Half Wave Antenna
  • End Fed Half Wave Antenna - An easy to deploy antenna, commonly considered the best solution for portable operations. Thir article includes a simple LC parallel circuit to match the impedance by IW7EHC
    [ Hits: 1382 | Votes: 2 | Rating: 1.5 ]
Internet and Radio : Other Resources
  • HamRadioEngineering.com - Amateur Radio site including Curcuit Diagrams, Antenna Construction, Radio Repairs, and serious fun. The Ham Radio Website for Ham Radio and Electrical Engineers, with mods, circuits to build, manuals and projects
    [ Hits: 312 | Votes: 0 | Rating: 0 ]
Manufacturers : Digital and Packet Radio Shopping and Services : Electronic Components
  • Circuit Specialists - Sell quality electronic components, equipment, and accessories. Test equipment, RF Modules, Power supplies, PCB, Stepper motors.
    [ Hits: 331 | Votes: 0 | Rating: 0 ]
Software : Circuit Design
  • The Quite Universal Circuit Simulator - RF/Microwave Simulator for Puppy Linux by WN2A
    [ Hits: 566 | Votes: 1 | Rating: 10 ]
  • EasyEDA - EasyEDA - Web-Based EDA, schematic capture, spice circuit simulation and PCB layout Online.
    [ Hits: 514 | Votes: 2 | Rating: 10 ]
  • DesignSpark PCB - DesignSpark PCB is the world's most accessible electronics design software, specially designed for Rapid Prototyping and turning your circuit ideas into testable boards faster. Easy to learn and easy to use, DesignSpark PCB is free and can you can download DesignSpark from this site.
    [ Hits: 526 | Votes: 0 | Rating: 0 ]
Technical Reference : Amplifiers : RF Amplifiers Theory
  • Power amplifier schematics - A collection of several power amplifier circuit diagrams and articles in PDF
    [ Hits: 443 | Votes: 1 | Rating: 1 ]
Technical Reference : Coax Cables and Connectors : Testing Coax Cables
  • The Coax Tester - This useful coax tester allows you to screw the PL-259 onto the tester to get a GO/NO GO status. When the LED lights up- you have a short circuit.
    [ Hits: 751 | Votes: 1 | Rating: 2 ]
Technical Reference : Homebrew
  • Ham Radio Beat Frequency Oscillator - A simple free running oscillator oscillating at the receiver\'s IF (intermediate frequency) beats with the incoming signals in either CW or SSB and the resultant audio frequency goes to the AF amplifier.
    [ Hits: 717 | Votes: 0 | Rating: 0 ]
  • A CW Sidetone Bypass - A CW sidetone bypass for the NESCAF audio filter, a small and low cost circuit that works great.
    [ Hits: 481 | Votes: 0 | Rating: 0 ]
Technical Reference : Microphones
  • FM Wireless Microphone - This FM wireless mike can transmit voice signals to any FM Radio receiver 100 meters away.
    [ Hits: 324 | Votes: 0 | Rating: 0 ]
  • SSB Microphone Filter - Build this circuit to tailor your microphone response to different band conditions. A project by KG4JJH
    [ Hits: 465 | Votes: 1 | Rating: 1 ]
Technical Reference : Morse Code Decoder Technical Reference : QRP Projects : QRP CW Transceiver
  • Super-QRP CW Transmitter - A circuit for a 5 milliwatts super QRP morse code transceiver by VE2ZAZ
    [ Hits: 1013 | Votes: 0 | Rating: 0 ]
Technical Reference : Receivers : Crystal radio
  • Crystal Radio Circuits - Collection of several Crystal Radio receiver circuits with schematics diagrams and pictures
    [ Hits: 636 | Votes: 1 | Rating: 10 ]
Technical Reference : Receivers : Progressive Receiver Technical Reference : Test Equipment
  • Dip oscillator - The dip oscillator is a useful piece of test equipment for the radio amateur. Circuit by VK3YE
    [ Hits: 505 | Votes: 0 | Rating: 0 ]
Technical Reference : Test Equipment : RF Sweep Generator
  • Sweep Generator with Marker - A simple simple sweep generator circuit design where the sawtooth is generated by the PNP transistor and a 555
    [ Hits: 1161 | Votes: 2 | Rating: 7.5 ]
Technical Reference : Test Equipment : Tutorials
  • Logic Analyzer - Article on how to use logic analyzers for testing complex logic-digital circuits
    [ Hits: 376 | Votes: 0 | Rating: 0 ]

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