Amateur Radio Projects


Posted on Feb 4, 2014

It took sometime to develop this interface for Echolink. It uses PIC16F84A and accepts external DTMF from Radio. My Latest Version Foxecho-k7 provides total isolation between Rig And PC and has AGC on received audio. Delay on this project was in part of Wrong DTMF chip that I selected a year back, which did not match the PIC well. Now this interface uses MT8870 and its one of the best sounded


Amateur Radio Projects
Click here to download the full size of the above Circuit.

echolink interface available to amateur radio operators. The best of all is, you do not have to buy this paying high price but you can make it yourself at home. Full documentation & firmware are posted here.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    RS-232 to TTL cable with MAX232
    Nite Rider LEDS
    8 LED Effects using PIC16F84A
    Low Power LED Battery Voltmeter
    Magnetic proximity switch
    Light Dimmer Circuit TRIAC dimmer circuitCircuitWorking
    8-Channel DTMF Link: Encoder



    Top