Guys i want to create a wireless communication network in my schools so that can call their friends on campus with no cost.i want help on the circuit diagram for the transmitter,amplifier, sound processor and the micro chip.
any help?

 

not sure i follow, how many schools you have?
how far apart? what type of wireless connection you have in mind?
how many simultaneous connections you think system should handle?
is this voice or data or something else? did you consider internet?