" SOUND CARD INTERFACE "

   THE SOUND CARD INTERFACE CONNECT THE COMPUTER TO YOUR RADIO
      WITHOUT GROUNDING THEM TOGETHER. ISOLATION TRANSFORMER IS AN 
      INEXPENSIVE AND EFFECTIVE WAY TO KEEP RF AND GROUND CURRENTS OUT
      OF YOUR SOUND CARD AND TRANSCEIVER AUDIO CIRCUITS. 
      THE TWO SIMPLE CIRCUIT BELOW IS WHAT I HAVE BEEN USEING HERE.
      ALL PART CAN BE GOT A RADIO SHACK FOR ABOUT 10 DOLLARS.













 



 THE ABOVE CIRCUIT IS VERY SIMPLE AND EASY TO BUILD. THE AUDIO FROM YOU
 RADIO TO YOUR COMPUTER  IS THE ONE TO BUILD FIRST
 THIS WILL LET YOU START COPYING THE ALL OF THE DIGITAL MODES
 
 
 THEIR IS A LOT OF SOUND CARD SOFTWARE ON THEN INTERNET
 FOR AMEUTAR TO USE SOME IS FREEWARE AND SHAREWARE.
  THE ONE I LIKE THE BEST IS MMRTTY FOR RADIOTELETYPE AND MMSSTV FOR SSTV.
 
 

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