I recently started developing an interest in tinkering with my Arduino. I bought 433 MHz Transmitters and Recievers (model number: XY-MK-5V).
But when I try using them I have pratically no range: without an antenna the chips have to be nearly touching and even with an antenna I don't get even a meter of range.
Am I doing something wrong? It seems like they should have more range. I'm currently supplying them with 5V from the Arduino, because when I supplied the transmitter with 12V it would not transmit anything.