Abstract: A connecting system is accordingly provided for a line tube, which can be pivoted about a rotation axis of a solar-thermal installation, which line tube is filled with a carrier fluid, wherein the line tube extends between two ends and is connected, for transportation of the carrier fluid, at a first end via a flexible tube connection to a fixed-position fixed line and at its second end via at least one connection means to a further line tube. According to the invention, the line tube is supported such that the flexible tube connection experiences only forces acting at right angles to the rotation axis, and the connection means experiences only forces acting parallel to the rotation axis.

Abstract: A co-site including at least two antenna/base transceiver station pairs operating on different frequency bands has a filter system that includes a first filter including a low band control port, a high band control port, a low band diversity port, and a high band diversity port and a second filter including a low band control port, a high band control port, a low band diversity port, and a high band diversity port. The second filter adjusts an adjustable load on each of the low band control port, the high band control port, the low band diversity port, and the high band diversity port of the second filter to simulate a current consumption of the low band control port, the high band control port, the low band diversity port, and the high band diversity port of the first filter, respectively.

Abstract: A connecting system is accordingly provided for a line tube, which can be pivoted about a rotation axis of a solar-thermal installation, which line tube is filled with a carrier fluid, wherein the line tube extends between two ends and is connected, for transportation of the carrier fluid, at a first end via a flexible tube connection to a fixed-position fixed line and at its second end via at least one connection means to a further line tube. According to the invention, the line tube is supported such that the flexible tube connection experiences only forces acting at right angles to the rotation axis, and the connection means experiences only forces acting parallel to the rotation axis.

Abstract: A co-site including at least two antenna/base transceiver station pairs operating on different frequency bands has a filter system that includes a first filter including a low band control port, a high band control port, a low band diversity port, and a high band diversity port and a second filter including a low band control port, a high band control port, a low band diversity port, and a high band diversity port. The second filter adjusts an adjustable load on each of the low band control port, the high band control port, the low band diversity port, and the high band diversity port of the second filter to simulate a current consumption of the low band control port, the high band control port, the low band diversity port, and the high band diversity port of the first filter, respectively.

Abstract: The invention relates to a device for connecting a fixed line to an absorber pipe of a solar-thermal power plant, at least one solar collector being able to perform a pivot motion about the absorber pipe, characterized by a) a flexible pipe connection between the fixed line and the absorber pipe and a b) means for connecting the flexible pipeline to the absorber pipe with zero torque and/or zero force. Acceptable mobility of the solar collectors is thus ensured even at high temperatures and/or pressures.

Abstract: A concealed suspension ceiling assembly with simplified support structure for closely spaced ceiling tiles is described. The ceiling tiles are kerfed and mounted on framing members suspended from a supporting grid. V shaped torsion springs engage hooks on the framing members and extend upwardly through slots in main tees in an intersecting grid of main tees and cross tees. A tool is inserted in the reveal between adjacent tiles to raise and lower a selected tile. Tiles are lowered in predetermined sections to permit access to the space above the suspended ceiling and also to permit repair or replacement of individual tiles.