Patent ID: 8160512

Claim:
A searching apparatus comprising: a receiving unit configured to receive transmission signals for locating a transmitter; a transmitting unit configured to transmit transmission signals, wherein at least a first and a second transmitting antenna are associated with at least the transmitting unit, which are disposed in the searching apparatus oriented in different spatial directions, wherein only one of the transmitting antennas is in operation in the transmission mode, at least one position sensor configured to determine a spatial position of the searching apparatus and to provide a position signal on its output which is correlated with the spatial position; and a switching device coupled to the at least one position sensor for supplying the position signal to the at least one first and second transmitting antenna, wherein a first range of values of the position signal is associated with the first transmitting antenna and a second range of values of the position signal is associated with the second transmitting antenna, wherein the switching device is configured to transmit the transmission signal over the first transmitting antenna in the transmission mode, if the position signal is in the first range of values, and to transmit the transmission signal over the second transmitting antenna in the transmission mode, if the position signal is in the second range of values.