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• Directional Helical Antenna
  
  This antenna is intended for the 20 meter Band There are two Voltage Fed Helical ...
  [ Hits: 1087 | Votes: 1 | Rating: 8 ]

• UHF Dual Rectangle Antenna - John E. Davis.
  
  The antenna described here is a direct connect dual rectangle beam for use on 70 ...
  [ Hits: 957 | Votes: 3 | Rating: 6 ]

• 2m Halo Antenna - KP4MD
  
  Construction and analysis of a low cost omnidirectional horizontally polarized antenna for 144 MHz including ...
  [ Hits: 1013 | Votes: 9 | Rating: 5.34 ]

• Curtain Antenna - antenna.be
  
  An antenna for shortwave radio broadcasting consisting of rows and columns of dipoles is a ...
  [ Hits: 854 | Votes: 0 | Rating: 0 ]

• Antenna Basics : Directional Antennas - Scott
  
  An article describing basic concepts of antenna radiation and in particular directional antennas like Yagi ...
  [ Hits: 347 | Votes: 1 | Rating: 2 ]

• The Turnstile antenna
  
  An omnidirectional and horizontally polarized VHF antenna by EA4EOZ
  [ Hits: 916 | Votes: 4 | Rating: 3.25 ]

• Manpack Communications
  
  A complete bi directional APRS messaging station made up of a Byonics TT4 with the ...
  [ Hits: 622 | Votes: 2 | Rating: 5.5 ]

• Peilsport.de - Peilsport.de
  
  ARDF Peilgruppe Neanderal Germany - Radio Direction Finding Event
  [ Hits: 152 | Votes: 0 | Rating: 0 ]

• Fast Charge your MFJ-259B Internal Batteries - AD5X
  
  Modify MFJ-259B to connect an external fast charger to the batteries directly
  [ Hits: 586 | Votes: 2 | Rating: 10 ]

• Shortwave.am - Shortwave Schedules - Stephen Cooper
  
  Shortwave Radio Schedules from Eibi AOKI combined lists Includes Google maps showing beam directions and ...
  [ Hits: 1658 | Votes: 2 | Rating: 3 ]

• Terminator for Android
  
  Android app by VE3VN that show view of night day and terminator around the globe ...
  [ Hits: 755 | Votes: 1 | Rating: 10 ]
• RepeaterBook
  
  Enables every Ham to easily find repeaters across the the World USA Canada Mexico and ...
  [ Hits: 471 | Votes: 2 | Rating: 9 ]

• DX Alert - OZ8AGB
  
  You can set up DX Cluster alerts and let the DX Alert server monitor the ...
  [ Hits: 474 | Votes: 2 | Rating: 9 ]

• JMSK - Jonti Olds
  
  JMSK is a software modem that implements a good coherent MSK demodulator that has performance ...
  [ Hits: 372 | Votes: 2 | Rating: 5.5 ]

• Arduino Rotator Controller - K3NG
  
  An rotator interface that interfaces a pc to a rotor or rotator controller emulating a ...
  [ Hits: 3866 | Votes: 7 | Rating: 7.94 ]

• DirectDirt
  
  The Information Source For Makers Experimenters DIY Home Brewers Restorers and Amateur Radio Operators ...
  [ Hits: 499 | Votes: 4 | Rating: 10 ]

• U310 FET preamplifier
  
  Extremely reliable FET preamplifier can handle several watts directly into either the input or the ...
  [ Hits: 1050 | Votes: 2 | Rating: 9 ]

• TNC-Pi
  
  TNC Pi is a special version of TNC X designed to interface directly with the ...
  [ Hits: 848 | Votes: 2 | Rating: 10 ]

• SDR Receiver using a Tube - HackADay
  
  The build was an experiment to see if a tube receiver could be stable enough ...
  [ Hits: 230 | Votes: 1 | Rating: 10 ]

• High Performance Communication Receiver
  
  The original article of the progressive system composed by a direct conversion receiver and multiband ...
  [ Hits: 1148 | Votes: 6 | Rating: 9.17 ]

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