The idea has been bounced around, and i thought to see if anyone here had any guidance before i tear into the literature. What kind of circuit is necessary to determine the frequency of an rf signal? The situation: An rf transmitter is pumping out waves (no modulation or data to be decoded) at some frequency in the kilohertz range. I want to know what that frequency is. How do i go about finding it. Is there a scanner or simple circuit that could do the job? *for the sake of argument, assume that it is the strongest signal in the vicinity Thanks in advance.