What is the cheapest 2.4 ghz receiver one can get or make if it must have -85 db receiver and a powerful?

Question

transmitter within legal limits.

Answer 1

First of all, if you want to transmit and receive, you want a transceiver, not just a receiver, as far as getting one goes........sorry I can't help you there, but look around on the internet you should be able to find one. Don't forget to get your FCC license to transmit.