2 phone Intercom circuit diagram which can be used upto 1km in outdoor using ringer


Posted on Feb 4, 2014

I want to build a 2 phone intercom which can be used upto 1km using speaker of same phone to create ring on other side please help..


2 phone Intercom circuit diagram which can be used upto 1km in outdoor using ringer
Click here to download the full size of the above Circuit.




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