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DTR Powered EchoLink Interface - "Tiny Echo"

Advanced, PIC 16F84A EchoLink Interface -"Fox Echo"

AGC Add-on card for Foxecho-K7

 

 

 

  

  Simple DTS Powered EchoLink Interface
  
Tiny Echo

 

 

This simple but efficient EchoLink interface measures 9cm x 6cm and is designed on Double Sided PTH Board. 

Provides Full Isolation between Rig & Computer by using two audio transformers & two Opto Couplers. May be powered from DTR Line by running a script on your PC or by supplying external 12V DC.

Project Details & Buy Kits or PCBs on-line

 

  PIC 16F84A Micro Controller Echo Link Interface
FOX ECHO
 

This advanced PIC Micro Controller EchoLink interface uses hardware DTMF decoder, Negative or Positive COR and true RS232 interface. Uses analog switches to mute Rx audio on transmit. Now available with effective audio AGC add-on board.

Designed on a 7cm x 12cm Double Sided PTH Board.

Project Details & Buy Kits or PCBs on-line

 

 SC2 Sound Card Interface
  

 

Project & Kits/PCBs available

 
 Want more information on VOIP?
 
Although I have mentioned my above interfaces a "EchoLink" interfaces, word EchoLink* is mentioned for VOIP technology in general. There are other such VOIP providers such as eQso, Wires II, and more, providing free VOIP services to Radio Amateurs.

I have simply made this interfaces to promote VOIP technology among radio amateurs for which I am providing free technical information as to how to build them. 

Dinesh Gajjar

** EchoLink is a registered trademark of Synergenics,LLC.

 

 
 
 
 
 
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