Abstract: A tool is employed to shift an external valve sleeve on an outer wellhead housing at a subsea location. The tool has an engaging member that moves between upper and lower positions. The tool has a locking member that locks to the inner wellhead housing with the engaging member sliding over the outer wellhead housing. In one embodiment, the tool also is employed to run the inner wellhead housing and preload it. The engaging member moves to a lower position to shift the valve sleeve after the inner wellhead housing has been preloaded by the tool. In another embodiment, the tool is lowered over a previously installed inner wellhead housing to retrieve the valve sleeve for repair or replacement.

Abstract: A facility for transmitting telecommunication signals from a tower utilizes an annular housing mounted to the tower. The housing has a central opening through which the tower extends. The housing has a circular wall with an axis that coincides with the longitudinal axis of the tower. Antennas and transmitters are mounted within the housing.