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SOLD Antenna Positioner Tower 1070-4 ETS-Lindgren EMCO
SOLD – Used Antenna Positioner Tower 1070-4 ETS-Lindgren. Older generation.
The Electro-Mechanics Company (EMCO) Model 1070 Antenna Positioning Tower is a
portable mast and platform system designed for use in EMI compliance testing at elevations from 0.5
to 6 meters above ground level. The mast, carrier, boom, platform, lift rope, and guying system are
non-conductive and non-magnetic. The antenna carrier is raised and lowered by a fractional
horsepower electric motor, gear reduction system, and an electric brake located on the motor base
assembly at the base of the system. In addition, a mechanical safety brake installed on the antenna
carrier operates automatically to prevent the carrier from falling.
The mast section of the tower is constructed of square fiberglass tubing for strength and rigidity .
The assembled mast consists of three or four sections, depending on whether a 4 or 6-meter height
of the mast is desired. A 4-meter height is attained by using the base section, one center section,
and the top section. A 6-meter height is attained by use of two center sections along with the base
and top sections. Mylar (low stretch) guy lines attach to the top section of the mast MUST be
firmly anchored to the ground to provide safe, adequate vertical stability.
Rollers built into the carrier assembly section allow smooth motion when carrying antenna loads of
up to 75 lbs. The vertical drive mechanism consists of the drive motor, a gear reduction system,
and an electric brake which stops the vertical motion typically within 2 centimeters of the desired
location. The motor drive system winds and unwinds a rope onto a guided take-up cylinder.
To prevent overrunning of the high and low limits of the mast assembly, the absolute upper and
lower limits of operation must be set by using the dual cam mechanism in the motor enclosure.
Within the mechanical limits set above, maximum and minimum antenna height positions can be entered into the EMCO Model 1090 Positioning Controller.
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