The antenna mechanics take care of the surface
and structural aspects of the antennas. They play a major role in
azimuth bearing changes, build prototypes for new equipment, assist
with transporter moves of the antennas and anything else that involves
any of the physical apsects of the antennas.
Changing an azimuth bearing
requires separating the dish from the lower portion of the antenna and
lifting the azimuth bearing out of the interior. Here Ramon and Steve
are discussing the condition of the pinion gear after the dish has been removed.
Adrian, Mel and Kelly are using the metal shear to cut a piece
of aluminum sheeting that will be used in building part of the
structure of the prototype vertex room for the EVLA antennas.
Antenna mechanics spend a lot
of their time up in the antennas. Jimmy and Jay are headed up to work
on the focus rotation mount at the very top of the quadrupod. Jay is
carrying his harness, required safety equipment for every technician
who goes above the surface of the dish.
Frank is inside the pedestal room working on the azimuth motor
so the antenna will turn smoothly. He comes up through a hatch in the
floor and does not have a lot of room to maneuver. Antenna mechanics
must not only be skilled in troubleshooting and fixing antennas, they
must be physically strong and agile as well.
Antenna mechanics are also
in charge of the paint shop. They have a self-contained building with
an exhaust system for safety. At right, John points out what he will
paint later in the day, as Phillip, in the lower photo, mixes the primer.