Abstract: A measuring device for over the air power measurements is provided. It comprises a power sensor unit, which is configured for measuring a power of a signal emitted by a device under test over the air and an indication unit which is configured for indicating the measured power optically. Moreover, the measuring device comprises a common housing, which encompasses the power sensor unit and the indication unit.

Abstract: Aspects of the subject disclosure may include, for example, a coupler including a receiving portion that receives a first electromagnetic wave conveying first data from a transmitting device. A guiding portion guides the first electromagnetic wave to a junction for coupling the first electromagnetic wave to a transmission medium. The first electromagnetic wave propagates via at least one first guided wave mode. The coupling of the first electromagnetic wave to the transmission medium forms a second electromagnetic wave that is guided to propagate along the outer surface of the transmission medium via at least one second guided wave mode that differs from the at least one first guided wave mode. Other embodiments are disclosed.