The last common signal ranges from 746 to 756 MHz. This signal could be coming wireless communication, where devices talk to each other without using wires. The signal could also be from a low-power TV (LPTV) station, which sends out information and entertainment to a local community. Another possibility is that the signal is from a TV translator. TV translators pick up a TV signal at one frequency and broadcast it at a different frequency so people in distant areas can watch it.