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• Lightweight 144 MHz Yagi antenna - VK3YY  ^updated
  
  A Lightweight 2m Yagi for SOTA The boom is 20mm PVC electrical conduit and the ...
  [ Hits: 180 | Votes: 1 | Rating: 4 ]

• HF Multiband Moxon Antenna - DU1RZ
  
  A project that describes a build a multiband wire beam antenna A 3 band single ...
  [ Hits: 711 | Votes: 13 | Rating: 7.54 ]

• Portable Vertical Antenna - WB9DLC
  
  A home made portable vertical antenna that with a single 1 4 wave counterpoise wire ...
  [ Hits: 362 | Votes: 0 | Rating: 0 ]
• 3 Band Mono Loop Portable Quad - HB9DSP
  
  Handmade drawing of a 3 bands single loop portable quad antenna used by the author ...
  [ Hits: 134 | Votes: 0 | Rating: 0 ]

• Active 3-30 MHz Hula-Loop Antenna for Shortwave - Charles Wenzel
  
  This active antenna for the shortwave band provides surprising performance even indoors As the name ...
  [ Hits: 160 | Votes: 1 | Rating: 10 ]

• Improve your Antennas for Low Solar Activity - CTU
  
  How to improve your transmitting antennas for very low solar activity periods vertically polarized 160 ...
  [ Hits: 425 | Votes: 0 | Rating: 0 ]

• Z Match with Toroid - G3VGR
  
  A single coil Z Match This QRP version by G3WQW using a T130 2 toroidal ...
  [ Hits: 100 | Votes: 0 | Rating: 0 ]

• W3DZZ Multiband Antenna - I6IBE
  
  An easy to build and extremely high performance antenna works perfectly on all HF bands ...
  [ Hits: 465 | Votes: 3 | Rating: 7.67 ]

• Reducing the Cable Mess - OH8STN
  
  Optimizing the cable connections for cat control and audio input output by implementing the digirig ...
  [ Hits: 155 | Votes: 0 | Rating: 0 ]

• Fundamentals of Radio Waves Propagation - VE2XIP
  
  How radio signal get propagated throught the atmosphere the role of the ionosphere the thropospheric ...
  [ Hits: 97 | Votes: 4 | Rating: 7.75 ]

• Enhancing Icom IC-7300 RX Antenna - IW0FFK
  
  Despite the model limitations such as a single TXRX antenna connector the author shares a ...
  [ Hits: 189 | Votes: 1 | Rating: 10 ]

• mini Ring-Core-Calculator - Calculate windings on ferrite cores - DG0KW
  
  The program can be used to calculate inductors coils and their number of turns on ...
  [ Hits: 400 | Votes: 1 | Rating: 1 ]
• One-turn loop inductance Online Calculator - in3otd
  
  The high frequency inductance of single turn loops of various shapes made of round wire ...
  [ Hits: 122 | Votes: 1 | Rating: 10 ]

• 70cm Beacon - S57NAN
  
  PLL synthesized 70cm CW beacon exciter The exciter is built arround a slightly more advanced ...
  [ Hits: 131 | Votes: 1 | Rating: 10 ]

• CW Keyboard and Keyer - W5UXH
  
  A Combination CW Keyboard and Paddle Keyer It uses a single Atmel microprocessor the ATmega328P ...
  [ Hits: 264 | Votes: 1 | Rating: 8 ]

• Gimme Five - QRP SSB Transceiver - DK7IH
  
  Gimme Five reloaded a compact 5 band QRP SSB transceiver in SMD technology This unit ...
  [ Hits: 285 | Votes: 1 | Rating: 10 ]

• How to Measure SWR - MAARS
  
  A guide to measuring SWR with different types of SWR Meters the single needle and ...
  [ Hits: 408 | Votes: 0 | Rating: 0 ]

• ADF4351 Signal Generator - CT2GQV
  
  Just a simple signal generator based on ADF4351 module from fleebay allows you to generate ...
  [ Hits: 149 | Votes: 2 | Rating: 10 ]

• Transverter for 50 70 28 MHz - YO4HFU
  
  This multiband transverter project features power output at 13 8V 50MHz 15W 70MHz 10W second ...
  [ Hits: 153 | Votes: 1 | Rating: 10 ]
• 2m to 70cm Transverter Circuit - VK4ADC
  
  A 70cm 432 MHz Transverter Project transverter circuit is an electronic device that converts a ...
  [ Hits: 82 | Votes: 0 | Rating: 0 ]

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