A radio frequency (“RF”) repeater system can receive, from a connected home device, an original RF signal that is unable to propagate through an object. The RF repeater system can demodulate the original RF signal to extract a data stream that includes data captured by the connected home device, can change an original data rate of the data stream to a new data rate that matches an ultrasonic frequency capable of propagating through the object thereby creating an ultrasonic data stream, can transmit, by a first surface transducer, the ultrasonic data stream through the object to a second surface transducer, can receive, by the second surface transducer, the ultrasonic data stream, can change the data stream from the new data rate back to the original data rate, can modulate the data stream to create a new RF signal, and can transmit the new RF signal towards the destination.