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Hardware Help
 
 
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  Two-Radio Control Box
   
  Dale KG5U uses this control box he designed to manually switch antennas and
  headphones for two radios in a contest.  
  
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  PC Audio to Headphones 
  
  Dale KG5U describes a circuit he developed to send the computer's 
  speaker audio to a headphone jack.  This lets him run the 
  TR LOG CW simulator 
  and listen to the code in headphones rather than coming out of the 
  front of the computer.
  
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  Optically Isolated Keying 
  
  Glenn AE0Q details circuit schematics using optocoupler ICs to 
  help keep RFI out of your computer's parallel or serial port when 
  using TR LOG to key the 
  radio on CW. 
  
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  MFJ 432 Voice Keyer Interface 
  
  Rich KL7RA provides a circuit schematic and description for a 
  interface cable to use an MFJ 432 voice keyer with 
  TR LOG.
  
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  MFJ 434 Voice Keyer Interface 
  
  Glenn AE0Q provides a circuit schematic and description for a 
  an optically-isolated interface to use an MFJ 434 voice keyer with 
  TR LOG.
  
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  Using the Kenwood DRU with TR LOG 
  
  Don K4BEV describes how he set up the numerical keypad to key the
  Digital Recording Unit (DRU) in his Kenwood TS-570 from within
  TR LOG to use it as a
  voice keyer.
  
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  Icom CI-V to RS-232 Interface 
  
  Nigel KG7SG published this circuit in the July 1992 issue of QST.
  The interface requires no external power and will interface an Icom radio 
  to a computer running TR LOG.
  
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