2-way communicator project
parts list:
two empty tin cans (preferably not rusty)
short length of string (longer length for long distance communications)
drill & drill bit
construction:
locate center of both can's unopened end.
drill small hole equal to string's diameter into each can's end.
route string through both holes and double knot the string end.
operating instructions:
separate cans to the string's length and speak into the open end of the can while partner listens with his/her ear to the other can opening.
adjust volume by keeping string taut for louder volume.
notes:
it is possible to construct a third-party communicator by adding a third can and string.
do not use communicator to converse across roadways, racetracks, airport runways, national boundary lines, etc.
secure communications can be acheived by pressing tin can tightly against your mouth as you speak. no radio scanning device can monitor this secure method!
if superior sound quality is important, inquire with Audioguru on his pre-emphasis circuit and how to adapt that to this project.