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• Yagi Uda Antenna Online Calculator - changpuak  ^updated
  
  A basic YAGI UDA online antenna calculator accept as input frequency number of elements diameter ...
  [ Hits: 115 | Votes: 4 | Rating: 6.25 ]

• A More Efficient Magnetic Loop Antenna - AA8C
  
  The idea behind this antenna was to use multiple conductors in parallel to reduce the ...
  [ Hits: 216 | Votes: 2 | Rating: 5.5 ]
• Magnetic Loop Antenna Builds and Autotuning Advancements - TF3LJ
  
  Explore two magnetic loop antenna constructions utilizing a 6 foot and a 12 foot square ...
  [ Hits: 145 | Votes: 0 | Rating: 0 ]

• Telescopic Fiberglass Antenna Pole Support Method - VA3KOT
  
  Supporting a telescopic fiberglass antenna pole for ham radio operation Rather than cumbersome methods like ...
  [ Hits: 145 | Votes: 0 | Rating: 0 ]

• Small DuoBand Antenna - DK7ZB
  
  This small dual band UHF VHF directional antenna is good choice for portable operations This ...
  [ Hits: 198 | Votes: 1 | Rating: 2 ]

• DIY Yagi Antenna - DiMaria
  
  This article describes the phases for the construction of a Yagi antenna The calculations of ...
  [ Hits: 110 | Votes: 4 | Rating: 3.5 ]

• E-Sporadic Forecast - propquest - propquest
  
  The map display allows you to select by locator or clicking on the map where ...
  [ Hits: 128 | Votes: 0 | Rating: 0 ]
• Current Space Weather Parameters - Solar Terrestrial Dispatch
  
  Solar Wind Velocity and Auroral Storm Potential the website provides also current magnetic indices like ...
  [ Hits: 59 | Votes: 0 | Rating: 0 ]

• Unpredictable Aspects of 160 meter Propagation - NM7M
  
  Come learn why it is very difficult to predict propagation on the top band Ionospheric ...
  [ Hits: 65 | Votes: 0 | Rating: 0 ]

• RF Inductor Calculator - vk3cpu
  
  This air core solenoid style RF inductor calculator calculates the inductance wire size number of ...
  [ Hits: 101 | Votes: 3 | Rating: 7 ]

• LogConv - KA5WSS
  
  LogConv is a versatile utility designed to convert Amateur Radio log files between various formats ...
  [ Hits: 40 | Votes: 0 | Rating: 0 ]

• QSL Card Generator Online - classabbyamp
  
  This app will generate a QSL card design based on the input paramters as a ...
  [ Hits: 72 | Votes: 1 | Rating: 10 ]

• Spectrogram - W5BIG
  
  Spectrogram a PC based audio frequency spectrum analyzer available from Visualization Software aids ham radio ...
  [ Hits: 23 | Votes: 0 | Rating: 0 ]
• RSP Spectrum Analyser - Steve Andrew  ^new
  
  The analyser has been written to support the full range of SDRplay SDR radios including ...
  [ Hits: 35 | Votes: 1 | Rating: 10 ]

• SNASharp - F4HTQ
  
  SNASharp is a free software application designed to work with scalar network analyzers compatible with ...
  [ Hits: 69 | Votes: 0 | Rating: 0 ]

• VARA - EA5HVK
  
  VARA HF is a soundcard modem that can be found on the HF bands exchanging ...
  [ Hits: 105 | Votes: 1 | Rating: 10 ]

• Resistor combination finder - IN3OTD
  
  If you need a non standard resistor value you could probably realize a close match ...
  [ Hits: 56 | Votes: 1 | Rating: 10 ]

• RF Toroid Calculator - VK3CPU
  
  This RF Toroid Calculator provides graphical calculator used to determine the inductance and other parameters ...
  [ Hits: 102 | Votes: 2 | Rating: 10 ]

• QRP Dummy Load - N5ESE
  
  This is another variation on the parallel resistor dummy load It is perfect for QRP ...
  [ Hits: 58 | Votes: 0 | Rating: 0 ]

• A Comparative Study of APRS Tracks with 1W and 100mW LoRa Trackers - IZ7BOJ
  
  Exploring LoRaWAN Range comparing the performance of 1Watt and 100mW LoRa trackers on daily commute ...
  [ Hits: 48 | Votes: 0 | Rating: 0 ]

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