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• Yagi Uda Antenna Online Calculator
  
  A basic YAGI UDA online antenna calculator accept as input frequency number of elements diameter ...
  By changpuak - Votes: 4 | Rating: 6.25

• A More Efficient Magnetic Loop Antenna
  
  The idea behind this antenna was to use multiple conductors in parallel to reduce the ...
  By AA8C - Votes: 2 | Rating: 5.5
• Magnetic Loop Antenna Builds and Autotuning Advancements
  
  Explore two magnetic loop antenna constructions utilizing a 6 foot and a 12 foot square ...
  By TF3LJ

• Telescopic Fiberglass Antenna Pole Support Method
  
  Supporting a telescopic fiberglass antenna pole for ham radio operation Rather than cumbersome methods like ...
  By VA3KOT

• Small DuoBand Antenna
  
  This small dual band UHF VHF directional antenna is good choice for portable operations This ...
  By DK7ZB - Votes: 1 | Rating: 2

• DIY Yagi Antenna
  
  This article describes the phases for the construction of a Yagi antenna The calculations of ...
  By DiMaria - Votes: 4 | Rating: 3.5

• E-Sporadic Forecast - propquest
  
  The map display allows you to select by locator or clicking on the map where ...
  By propquest
• Current Space Weather Parameters
  
  Solar Wind Velocity and Auroral Storm Potential the website provides also current magnetic indices like ...
  By Solar Terrestrial Dispatch

• Unpredictable Aspects of 160 meter Propagation
  
  Come learn why it is very difficult to predict propagation on the top band Ionospheric ...
  By NM7M

• RF Inductor Calculator
  
  This air core solenoid style RF inductor calculator calculates the inductance wire size number of ...
  By vk3cpu - Votes: 3 | Rating: 7

• LogConv
  
  LogConv is a versatile utility designed to convert Amateur Radio log files between various formats ...
  By KA5WSS

• QSL Card Generator Online
  
  This app will generate a QSL card design based on the input paramters as a ...
  By classabbyamp - Votes: 1 | Rating: 10

• Spectrogram
  
  Spectrogram a PC based audio frequency spectrum analyzer available from Visualization Software aids ham radio ...
  By W5BIG
• RSP Spectrum Analyser
  
  The analyser has been written to support the full range of SDRplay SDR radios including ...
  By Steve Andrew - Votes: 1 | Rating: 10

• SNASharp
  
  SNASharp is a free software application designed to work with scalar network analyzers compatible with ...
  By F4HTQ

• VARA
  
  VARA HF is a soundcard modem that can be found on the HF bands exchanging ...
  By EA5HVK - Votes: 1 | Rating: 10

• Resistor combination finder
  
  If you need a non standard resistor value you could probably realize a close match ...
  By IN3OTD - Votes: 1 | Rating: 10

• RF Toroid Calculator
  
  This RF Toroid Calculator provides graphical calculator used to determine the inductance and other parameters ...
  By VK3CPU - Votes: 2 | Rating: 10

• QRP Dummy Load
  
  This is another variation on the parallel resistor dummy load It is perfect for QRP ...
  By N5ESE

• A Comparative Study of APRS Tracks with 1W and 100mW LoRa Trackers
  
  Exploring LoRaWAN Range comparing the performance of 1Watt and 100mW LoRa trackers on daily commute ...
  By IZ7BOJ

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