I am going to be manufacturing a new product that will need to be able to communicate via the cell tower network as a secondary function. I am trying to determine what the cost would be to install the components necessary to send data only. I have talked to some people who suggested that the...
Does anyone know of a way to use radio to radio transmission to determine the distance between the two radios with an error of about a meter? These radios would need to be small and economical - preferably transmitting on a free frequency with the longest range possible.
