(under subclass 700) Subject matter wherein a definite space is provided beneath an aperture in a conducting surface, and at least one antenna is mounted in the space with its active portion at least partially beneath the surface to transmit or receive radio wave energy when so mounted.
(1) Note. The subject matter in this subclass usually involves an antenna mounted in a recess below the skin of an airplane to avoid the air currents. The recess may be covered, as by an insulating cover which passes radio wave energy.
SEE OR SEARCH THIS CLASS, SUBCLASS:
702, for antennas with significantly related cabinet structure.
705+, and 709+, for antennas with significantly related aircraft or watercraft structure, respectively.
767+, for slot type antennas.
872+, for antennas with housings in general. 889, for rod type antennas retractable into a support.
