I'm building a circuit in two parts; a very low power transmitter, and a small RF detector. When the reciever passes a given distance from the transmitter (say, three meters), it sounds a buzzer. Is there an analog solution to this, or would an RF detecting chip like the STPAC01F2 work better/be cheaper? Actual position sensing is not needed, it is intended to be an "out too far" alarm. thanks, Mike Matthews
- posted
18 years ago