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

  
Inside:
Repository
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 - schematic




Leave Comment

characters left:

New Circuits

.