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• 50 MHz Omnidirectional antenna - PE1ITR
  
  Horizontal polarized omni directional 50MHz Antenna This antenna is intented to use in a contest ...
  [ Hits: 317 | Votes: 6 | Rating: 2.5 ]

• Corned Fed Delta Loop - LA8OKA
  
  Author found a ratio between the lengths of the sides of the Delta Loop that ...
  [ Hits: 169 | Votes: 0 | Rating: 0 ]

• Phased Array Antennas - YO3DAC
  
  Phased array antennas are composed of multiple individual antenna elements that can have their phase ...
  [ Hits: 82 | Votes: 0 | Rating: 0 ]

• An introduction to the air cored coil - R.Clarke
  
  We use the term air core coil to describe an inductor that does not depend ...
  [ Hits: 107 | Votes: 1 | Rating: 2 ]

• End-Fed Half-Wave Antenna for 20m 40m 80m - VA3KOT
  
  How to Design and Build a Field Expedient End Fed Half Wave Antenna for 20m ...
  [ Hits: 143 | Votes: 1 | Rating: 4 ]

• How to find out if your choke works - VA3KOT
  
  How many times have you heard the advice to coil a few turns of coax ...
  [ Hits: 212 | Votes: 1 | Rating: 9 ]

• What is Horn Antenna - frambos
  
  Horn Antenna The energy of the beam when slowly transform into radiation the losses are ...
  [ Hits: 74 | Votes: 0 | Rating: 0 ]

• Build this Vertical Portable HF Antenna - KX4O
  
  An experimental prototype of an asymmetrical hatted vertical dipole antenna that can work on HF ...
  [ Hits: 374 | Votes: 3 | Rating: 9.67 ]

• The Swiss Quad Antenna - ZS6PP
  
  Rotatable Antenna with Phased Elements based on the orignal design concept of HB9CV antennas is ...
  [ Hits: 365 | Votes: 3 | Rating: 7.67 ]

• HF Receive Antenna - K0EMT
  
  This page describes a couple of parts box medicine bottle antennas that you can build ...
  [ Hits: 192 | Votes: 2 | Rating: 3 ]

• Folded Dipoles in Yagi Uda Antennas
  
  A folded dipole is an antenna with two conductors connected on both sides and folded ...
  [ Hits: 317 | Votes: 2 | Rating: 4.5 ]
• The Weird Antenna Wire End Effect - VA3KOT
  
  A half wave wire that is tuned for resonance on 80m will NOT be resonant ...
  [ Hits: 95 | Votes: 0 | Rating: 0 ]

• VHF UHF BiQuad - KE4UYP
  
  This is a vertically polarized Broadside and Collinear Array each Loop is a vertically polarized ...
  [ Hits: 177 | Votes: 0 | Rating: 0 ]

• W0CW Kansas City DX Club - K0XM
  
  Established in the mid 1970 s The Kansas City DX Club is an ARRL affiliated ...
  [ Hits: 55 | Votes: 0 | Rating: 0 ]

• Keys to Good Code - W6BNB
  
  Article appeared on 73 amateur radio today in 1999 on how to unlock the secrets ...
  [ Hits: 342 | Votes: 1 | Rating: 9 ]

• Radio Wave Transmission Paths - VIAS
  
  Radio transmission is affected by the presence of the earth Also the upper atmosphere of ...
  [ Hits: 111 | Votes: 1 | Rating: 9 ]

• Morse Code Practice Oscillator - Zendesk Webdev
  
  In this project we blend old school and new school tech to create a Morse ...
  [ Hits: 61 | Votes: 0 | Rating: 0 ]

• Demonstrating AM sidebands - PA3FWM
  
  Amateur radio courses teach that in amplitude modulation sidebands arise This can be proven mathematically ...
  [ Hits: 65 | Votes: 0 | Rating: 0 ]

• RF Exposure Calculator - K7LWH
  
  To use the RF Exposure Calculator fill in the form with your operating power antenna ...
  [ Hits: 102 | Votes: 0 | Rating: 0 ]

• 70 MHz Transverter - OZ1DJJ
  
  This page gives a brief description of a 70 MHz transverter that has been published ...
  [ Hits: 62 | Votes: 0 | Rating: 0 ]

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