i want to be able to send a signal over a distance of 2 metres or less no bigger is this possible? any suggestions for other ways to send a signal over a 2 metre radius?
What kind of signal do you want to send ? (be SPECIFIC)
You can't prevent a signal propagating further than you intend, for reliable 2m communication range you'll get
perhaps 20m range occassionally, that's unavoidable unless out in space with nothing to reflect and create multipath interference.
Bluetooth will do that range, nRF24L01 modules will.
Do you need duplex operation? Do you want error detection and resends, packetization, etc? Baud rate?
I don't think meant what he said.
I think he meant the maximum distance he needed was 2 meters.
I don't think he was asking if it is possible to restrict the signal to 2 meters, although here on the forum
anything is possible.