lähetinvastaanotinperiaate
The lähetinvastaanotinperiaate, or transmitter-receiver principle, describes the fundamental operation of devices that both send and receive radio signals. This dual functionality is essential for wireless communication systems. A transmitter converts information, such as voice or data, into an electrical signal which is then modulated onto a radio wave by an antenna. This modulated wave is broadcast through the air.
A receiver, on the other hand, captures these radio waves using its antenna. It then filters out