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• Helical Antennas -Theory - tutorialspoint
  
  Helical antenna or helix antenna is the antenna in which the conducting wire is wound ...
  [ Hits: 137 | Votes: 0 | Rating: 0 ]

• Introduction to HFTA HF Terrain Assessment - N1FD
  
  A complete guide to plan antenna installation by using several tools and resources including the ...
  [ Hits: 142 | Votes: 1 | Rating: 7 ]

• How To Build a Quadrifilar Helix Antenna for Weather Satellites - tinhatranch
  
  How to build a QFH Quadrifilar Helix Antenna to download images from weather satellites A ...
  [ Hits: 700 | Votes: 6 | Rating: 7.17 ]

• The Smith Chart - Bevelacqua
  
  This tutorial introduces and explains Smith Charts and then gives an introduction to impedance matching ...
  [ Hits: 116 | Votes: 2 | Rating: 9.5 ]

• It's Ham Radio - VU3HZW
  
  Amateur Radio News Tutorials Club Activities DIY Instructions and Latest Circuits Ideas from India ...
  [ Hits: 80 | Votes: 6 | Rating: 8.67 ]

• Getting Started on RTTY - RttyContesting.com
  
  A tutorial on how to get started operating RTTY using MMTTY as the primary program ...
  [ Hits: 208 | Votes: 0 | Rating: 0 ]

• How to call CQ as an HF QRP station - qrper.com
  
  Tutorial How to call CQ as an HF QRP station in SSB Phone Calling CQ ...
  [ Hits: 132 | Votes: 3 | Rating: 4 ]

• GPS time sync for modern digital modes - W0JD
  
  As FT8 JT65 and JT9 are a time synchronized protocol one soon discovers that an ...
  [ Hits: 447 | Votes: 0 | Rating: 0 ]

• HF Radio Propagation Forecast - 4X4XM  ^updated
  
  This page offers radio amateurs experienced and beginners a useful overview and tutorials on HF ...
  [ Hits: 365 | Votes: 20 | Rating: 8.85 ]

• Explaining ARRL Radio Tech Reviews - VA7OJ
  
  Explaining ARRL Technical Reviews of Radios a brief tutorial on radio testing The ARRL Lab ...
  [ Hits: 120 | Votes: 0 | Rating: 0 ]

• OnLine Morse Tutor by NoseyNick - VA3NNW
  
  An online version of a fully automatic morse code teaching machine This morse machine permit ...
  [ Hits: 150 | Votes: 1 | Rating: 10 ]

• Spectrogram - W5BIG
  
  Spectrogram a PC based audio frequency spectrum analyzer available from Visualization Software aids ham radio ...
  [ Hits: 24 | Votes: 0 | Rating: 0 ]

• A Guide for Seamless FT8 Operation - Time Sync - N6CTA
  
  N6CTA provides a comprehensive tutorial on manually configuring NTP synchronization for Debian Linux ensuring accurate ...
  [ Hits: 58 | Votes: 1 | Rating: 8 ]

• KEYERduino low-cost Arduino project - M0XPD
  
  A low cost Arduino project expanding on the button tutorial where three inputs act as ...
  [ Hits: 59 | Votes: 0 | Rating: 0 ]

• Battery University - BatteryUniversity
  
  A free educational website offering hands on battery information The tutorials evaluate the advantages and ...
  [ Hits: 64 | Votes: 0 | Rating: 0 ]

• A Tutorial on the Decibel - W1ICW
  
  This tutorial provides background information on the decibel and instructions for performing calculations involving decibels ...
  [ Hits: 353 | Votes: 1 | Rating: 7 ]

• Low Cost FT8 WSPR Monitoring System - RTL SDR
  
  A tutorial on setting up a Low Cost QRP FT8 JT9 WSPR etc Monitoring Station ...
  [ Hits: 273 | Votes: 0 | Rating: 0 ]
• Raspberry WSPR receiver - IT9YBG
  
  Tutorial- WSPR receiver with Raspberry Pi and RTL-SDR
  [ Hits: 219 | Votes: 1 | Rating: 8 ]
• Raspberry Pi Pirate Radio - Gus
  
  In this tutorial the author shows the basics of how to set up a Raspberry ...
  [ Hits: 73 | Votes: 0 | Rating: 0 ]

• How to build a Software Defined Radio - G0KLA
  
  Experimental Methods in DSP design The author explains how a software defined radio works to ...
  [ Hits: 210 | Votes: 0 | Rating: 0 ]

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