What happens to digital radios when they are out of range?

When digital radios are out of range, they do not continue to function the same way they would when within range. Instead, they stop transmitting, which means that any communication attempts made by the device will cease. This is due to the inherent nature of digital radios, which depend on a strong signal to maintain a clear communication link. When the signal strength falls below a certain threshold, the transmitter recognizes that it can no longer effectively communicate with the receiver, leading to a halt in transmission.

The other options suggest various degrees of continued functionality or issues that do not accurately reflect the behavior of digital radios when out of range. For example, radios do not continue to receive useful signals without a connection, nor do they merely fade out incrementally; once out of range, they lose the transmission capability entirely.