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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 ]

• 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 ]

• Reversible RG6 Beverage Antenna - VE3VN
  
  A project about reversible unidirectional Beverage antennas plus a remote switching system conveniently controlled by ...
  [ Hits: 186 | Votes: 3 | Rating: 7 ]

• 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 ]

• Log Periodic Dipole Array Calculator - LA8OKA
  
  Description and online calculator for Log Periodic Dipole Arrays LPDA are directional antennas featuring a ...
  [ Hits: 228 | Votes: 2 | Rating: 6 ]

• The 2BD beam antenna for 20 meters - EA2BD
  
  A light portable 2 element Delta beam antenna for 14 MHz It is basically a ...
  [ Hits: 186 | Votes: 1 | Rating: 8 ]

• WebSDR in Andorra - ARDAM
  
  Listen to online WebSDR located in Andorra Europe Four receivers on 60m 20m 40m and ...
  [ Hits: 133 | Votes: 1 | Rating: 5 ]

• KiWi WebSDR Maps - Linkfanel
  
  A live map of current KiWiSDR receivers available on the network taken directly by the ...
  [ Hits: 367 | Votes: 3 | Rating: 10 ]

• USA Amateur Radio Repeaters - IU3BLA
  
  USA Amateur Radio Repeaters Directory, 2m and 70cm bands.
  [ Hits: 96 | Votes: 0 | Rating: 0 ]

• CubeSat.org - CubeSat org
  
  This website provides information and resources for CubeSat developers including a directory of CubeSat projects ...
  [ Hits: 12 | Votes: 0 | Rating: 0 ]

• Elecraft K2 Preselector Modification - NJ0IP
  
  Although most Preselectors are designed with an internal T R relay theoretically enabling direct insertion ...
  [ Hits: 191 | Votes: 0 | Rating: 0 ]

• Ham Secretary - SP9AUV
  
  The program serves to assist in a ham radio activities secretarial with his hobby such ...
  [ Hits: 151 | Votes: 0 | Rating: 0 ]

• Transmission Line Details - AC6LA
  
  This utility program shows the impedance and reflection coefficient parameters SWR reflection coefficient magnitude Rho ...
  [ Hits: 128 | Votes: 0 | Rating: 0 ]

• 12v Battery Charger - XQ2FOD
  
  Well firstly the 12 Volt source will typically vary anywhere from 11 Volt to 15 ...
  [ Hits: 80 | Votes: 1 | Rating: 10 ]

• JUNIOR-2 ARDF receiver - DL5NBZ
  
  The JUNIOR 2 presented here is a competition direction finder receiver that is easy to ...
  [ Hits: 90 | Votes: 0 | Rating: 0 ]

• A Simple Hybrid Software Defined Radio - AA8C
  
  This Hybrid SDR is a combination of a current technology analog radio techniques used with ...
  [ Hits: 115 | Votes: 0 | Rating: 0 ]

• How RTL-SDR dongles work - PA3FWM
  
  Since 2012 the RTL SDR is the simple and cheap way to give Software Defined ...
  [ Hits: 129 | Votes: 1 | Rating: 10 ]

• A Simple Field Strength Meter - ve7sar
  
  Mad your own simple FS meter It is the simplest thing to make and is ...
  [ Hits: 160 | Votes: 0 | Rating: 0 ]

• An introduction to YIG Tuned Oscillators - MicroSource
  
  The YIG Tuned Oscillator YTO is the only direct signal source to provide multi octave ...
  [ Hits: 35 | Votes: 0 | Rating: 0 ]

• Measuring with a MiniVNA - N4SPP
  
  Measuring technicques using a MiniVNA author describes how to determine and unknown inductance or how ...
  [ Hits: 186 | Votes: 1 | Rating: 1 ]

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