The wireless transmission range for personal security devices is becoming less of an issue.

Otherwise, the transmission range is of the order of 5000 km.

I was trapped, out of transmission range, and basically immobilized.

At night, transmission ranges of 3,000-4,000 miles (4,500-6,500 kilometers) were typical.

In about fifteen minutes, we'll be within your transmission range.

The transmission range must be sufficient to reach the device.

Same goes if the boat moves out of transmission range.

The transmission range is designed to be very short, about 4 inches (10 cm) or less.

Eve moved out of transmission range and sat on the arm of a chair.

The application of resonance increases the transmission range somewhat.