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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: 113 | 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: 215 | Votes: 2 | Rating: 5.5 ]

• NOAA Predicted Sunspot Number - NOAA
  
  Predicted Solar Cycle Sunspot Number And Radio Flux Values with Expected Ranges sources are Penticton ...
  [ Hits: 41 | Votes: 0 | Rating: 0 ]

• Estimated International Sunspot Number - sidc
  
  The estimated international sunspot number EISN is a daily value obtained by a simple average ...
  [ Hits: 40 | Votes: 0 | Rating: 0 ]

• Spy Numbers Stations - hfunderground
  
  Spy Numbers Stations are shortwave radio stations that are speculated to have been broadcasting since ...
  [ Hits: 176 | Votes: 0 | Rating: 0 ]
• Spy Numbers Recordings - shortwavearchive
  
  From the sortwave radio audio archive a collection of recordings of several spy numbers stations ...
  [ Hits: 125 | 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 ]

• BITX QRP RTX - VU2ESE
  
  An easy to build 6 watts SSB transceiver for 14MHz BITX is an easily assembled ...
  [ Hits: 104 | Votes: 0 | Rating: 0 ]

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