The SPMTs are designed to accept interfacing fixtures that are secured by means of bolts and pins. These fixtures come in different configurations and are modified for each move. This eliminates the need to modify the SPMTs for each move. For this move, the fixture consisted of a flat plate on top of the SPMT and spacer plates to accommodate the antenna base frame splice plates.

Once the SPMTs were correctly positioned under the antenna base frame, L-brackets were welded onto the flat plate to secure the alidade frame to the SPMTs.
The SPMTs were connected to each other via a data cable thus linking all units together electronically. Once connected, they were programmed to act in synchronization. All functions were performed from a control box worn by the operator.

Joy sticks are used to control the movement of the SPMTs. Once the antenna parameters are programmed into the computer, the computer monitors the level of the structure and adjusts the hydraulically driven wheels automatically to maintain the four corners of the antenna base frame in the same plane at all times during the move.

First 2 Days

Thrid Day

Install climbing jacks under the antenna base frame Secure antenna from lateral motion Disconnect antenna from azimuth rotation bearing Lift antenna Place SPMTs at corner positions Lower antenna onto SPMTs Secure antenna to SPMTs

Perform safety checks Remove cables securing antenna from lateral motion Begin moving antenna Monitor move progress Arrive at new location