Hi all,
I really don't know how to tell what I want. I want a thing to place in a room and I with a walky-talky or phone or something to hear it for a distance of 10-100 meters to hear it.( if it is possible through walls)
Just tell me how to build it without buying many things except for example the walky-talky because here in Macedonia you can't find everything..
Cheers! Aleksandar Kiselinov