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DTR Powered EchoLink Interface - "Tiny Echo"

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

Audio AGC add-on Card for Foxecho-K7

 

 

 

 

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 PIC 16F84A Micro Controller EchoLink* Interface

 

FOX ECHO-K7

 

 

Fox Delta: Foxecho-K7 Echolink Interface

 

 

PIC16F84A Micro Controller EchoLink* Interface is designed to achieve some of the following points of Interest to Radio Amateurs:

 

 

Real RS232 signals
100% Galvanic Separation
Plug-in Tone & AGC module (option)
VOX or COR (Positive or Negative logic selectable)
Hardware DTMF decoding 
Muting (automatic) of receiver audio
Adjustable receiver and transmitter audio levels
Power status, DTMF, PTT and COR LED's
Uses a PIC16F84A 
DIN 5 Front Panel Connector for easy interface to Rig
Transceiver connection has “HT” Header for portables
No relays. Uses HFE4053 Analog Switches.
12cm x 7cm, Double Sided PTH Board.
Usable for other digital modes like PSK31
A true homebrew project, you can build.
Kit includes an Alum. Enclosure
Complete Kit for $55 

 

 

Foxecho-K7 interface uses an MT8870 DTMF Decoder and a PIC16F84A. Uses two 4N33 Opto Couplers and two transformers to achieve 100% isolation between transceiver and your PC.

An AGC add-on card is available to effectively control receive audio level and tone.

 

* EchoLink is a registered trademark of  Synergenics, LLC

 


 

Picture of the Completed EchoLink* Interface
 

FoxEcho-K7 is an advanced Echolink Interface

 

Click to enlarge

 

 FoxEcho-K7 Doc & Firmware
Technical Info Doc Fox Echo Schematic & Parts List
Transceiver Connection to DIN5 and Header Details Fox Echo Schematic & Parts List
 
Schematic & Parts List Fox Echo Schematic & Parts List
Foxecho-k7 Sysop Config. Document Fox Echo Schematic & Parts List
Foxecho-k7 Mic & Header Setup Fox Echo Schematic & Parts List
 
Schematic JPG Fox Echo Schematic
Schematic of the Isolated components JPG Fox Echo Schematic
 

 
Foxecho AGC Add-on Card Fox Echo Schematic & Parts List
   
AGC Card Schematic JPG Fox Echo Schematic
 
View Picture of Add-on card installed on Foxecho Interface
 

 

 

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US $ Buy On-Line

FoxEcho-K7 Kit with Alum. Case. 55.00

Out of Stock

  Kit Packing List    
      


FoxEcho-K7 fully assembled with Alum. Case. 65.00 Out of Stock
  

AGC Add-on Card Kit 15.00

Kit Packing List

For USA Delivery please click link below
Foxecho & TinyEcho kits are also available from K7SFN
 

 

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