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• UniBalun: Lightweight Balun/UnUn PCB for QRP Radios (1:1, 1:4, 1:49) - DG1JAN
  
  The UniBalun is a PCB for building a lightweight antenna transformer Balun or impedance converter ...
  [ Hits: 64 | Votes: 1 | Rating: 1 ]

• Beverage Transformers for HF Receiving Antennas - KK5JY
  
  This FAQ covers building and buying transformers for loop on ground and Beverage antennas Building ...
  [ Hits: 22 | Votes: 0 | Rating: 0 ]

• 1:49 unun for end fed half wave antennas - vu3dxr
  
  1 49 UNUN using two stacked FT240 43 cores for end fed halfwave antenna To ...
  [ Hits: 402 | Votes: 10 | Rating: 8.1 ]

• Patented RF choke test - PA3FWM
  
  A reproduction test of a a binocular ferrite core and winds a total of 7 ...
  [ Hits: 105 | Votes: 0 | Rating: 0 ]
• Chokes and Temperature changes - PA0NHC
  
  The influence of temperature changes in Common Mode Chokes To get an indication of the ...
  [ Hits: 46 | Votes: 0 | Rating: 0 ]

• K4SWL Antenna Plus - K4SWL
  
  This project details building a multi band antenna for park activations The author constructs a ...
  [ Hits: 56 | Votes: 0 | Rating: 0 ]

• Chokes and Isolation Transformers for Receiving Antennas - K9YC
  
  Chokes and isolation transformers are essential for receiving antennas to mitigate common mode current which ...
  [ Hits: 61 | Votes: 1 | Rating: 9 ]

• Performance of 49:1 Ferrite Core Transformers - AF7NX
  
  There are quite a few recipes for building a suitable transformer for an end fed ...
  [ Hits: 151 | Votes: 4 | Rating: 7 ]

• HamAward - IW1FRU
  
  HamAward is a cloud based amateur radio logbook allowing multi operators multi station activities featuring ...
  [ Hits: 111 | 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 ]

• Analyzing SSB Signal Quality in CQ WW Contest - OH6LI
  
  This article investigates SSB signal quality during the CQ WW 2015 SSB contest It highlights ...
  [ Hits: 42 | Votes: 0 | Rating: 0 ]

• DIY EMC/RFI Mains Filter for a Clean Shack - M0PZT  ^updated
  
  Utilizing snap on ferrite cores and practical insights the author enhances their shack s cleanliness ...
  [ Hits: 158 | Votes: 2 | Rating: 9.5 ]

• How To Achieve Perfect PCB Soldering - Jim Smith
  
  Surprisingly although PCB soldering is the core process of electronics assembly few people do know ...
  [ Hits: 155 | Votes: 1 | Rating: 1 ]

• Baofeng UV5R TRRS Adapter - johnboiles
  
  A tiny board which allows a smartphone or similiar device to connect to the Baofeng ...
  [ Hits: 93 | Votes: 0 | Rating: 0 ]

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