The STU-4series shipboard tilt units are modular electromechanical systems for lowering and raising dual shipboard communication antennas. These units and the single antenna variants (STU-3 series) have over 90% commonality of components.

The STU-4LW uses a 1-horsepower brakemotor. The electrical controls are located in the pedestal for local operation, while an optional remote control will operate up to three units at a maximum of 1,200 feet away. A manually operated handcrank provides emergency control in the event of electrical failure. Tilt angles may be preset to any angle from vertical through 115°, and powered rotation from vertical to 90 seconds. All units may be tilted inboard to expedite antenna maintenance, removal or installation. Converting from dual to single antenna configuration is accomplished by installing another support arm. Provisions for mounting antenna tuners and couplers are available in rotating elements, permitting antenna feedwire lengths to be kept to a minimum. Compression pads are activated at vertical and horizontal limits to reduce shock and vibration loads from being transmitted to the rotating elements. Cam operated limit switches control the vertical and horizontal positioning. An overtravel limit switch removes all power to the drive motor in the event of limit switch failure. The units are designed to with stand loads of 1,000,000in/lb, and are normally used where green water loads are a major concern. Manual crank versions are also available.

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The STU-3 series shipboard tilt units are modular electromechanical systems for lowering and raising dual shipboard communication antennas. These units and the dual antenna variants (STU-4 series) have over 90% commonality of components.

The drive element is a two-stage planetary gearbox. The STU-3HD series uses a 2-horsepower brakemotor, while the STU-3LW uses a 1-horsepower brakemotor. The electrical controls are located in the pedestal for local operation, while an optional remote control will operate up to three units at a maximum of 1,200 feet away. A manually operated handcrank provides emergency control in the event of electrical failure. Tilt angles may be preset to any angle from vertical through 115°, and powered rotation from vertical to 90° horizontal takes only 20 seconds. All units may be tilted inboard to expedite antenna maintenance, removal or installation. Converting from single to dual antenna configuration is accomplished by installing another support arm. Provisions for mounting antenna tuners and couplers are available in rotating elements, permitting antenna feedwire lengths to be kept to a minimum. Compression pads are activated at vertical and horizontal limits to reduce shock and vibration loads from being transmitted to the rotating elements. Cam operated limit switches control the vertical and horizontal positioning. An overtravel limit switch removes all power to the drive motor in the event of limit switch failure. The STU-3HD & STU-4HD (HEAVY DUTY) units are designed to withstand loads of 1,000,000 in/lb, and are normally used where green water loads are a major concern. Manual crank versions are also available.

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The STU-3 series shipboard tilt units are modular electromechanical systems for lowering and raising single shipboard communication antennas. These units and the dual antenna variants (STU-4series) have over 90% commonality of components.

The drive element is a two-stage planetary gearbox. The STU-3 HD series uses a 2-horsepowerbrakemotor. The electrical controls are located in the pedestal for local operation, while an optional remote control will operate up to three units at a maximum of 1,200 feet away. A manually operated handcrank provides emergency control in the event of electrical failure. Tilt angles may be preset to any angle from vertical through 115, and powered rotation from vertical to 90 horizontal takes only 20 seconds. All units may be tilted in board to expedite antenna maintenance, removal or installation. Converting from single to dual antenna configuration is accomplished by installing another support arm. Provisions for mounting antenna tuners and couplers area vailable in rotating elements, permitting antenna feed wirelengths to be kept to a minimum. Compression pads are activated at vertical and horizontal limits to reduce shock and vibration loads from being transmitted to the rotating elements. Camoperated limits witches control the vertical and horizontal positioning. An overtravel limit switch removes all power to the drivemotor in the event of limit switch failure. TheSTU-3HD & STU-4HD (HEAVYDUTY) units are designed to withstand loads of 1,000,000 in/lb, and are normally used where green water loads are a major concern. Manual crank versions are also available.

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The STU-4series shipboard tilt units are modular electromechanical systems for lowering and raising dual shipboard communication antennas. These units and the single antenna variants (STU-3series) have over 90% commonality of components.

The drive element is a two-stage planetary gearbox. The STU-4HD series uses a 2-horsepower brakemotor. The electrical controls are located in the pedestal for local operation, while an optional remote control will operate up to three units at a maximum of 1,200 feet away. A manually operated handcrank provides emergency control in the event of electrical failure. Tilt angles may be preset to any angle from vertical through115°, and powered rotation from vertical to 90 seconds. All units may be tilted inboard to expedite antenna maintenance, removal or installation. Converting from dual to single antenna configuration is accomplished by installing another support arm. Provisions for mounting antenna tuners and couplers are available in rotating elements, permitting antenna feedwire lengths to be kept to a minimum. Compression pads are activated at vertical and horizontal limits to reduce shock and vibration loads from being transmitted to the rotating elements. Cam operated limit switches control the vertical and horizontal positioning. An overtravel limit switch removes all power to the drive motor in the event of limit switch failure. The units are designed to with stand loads of 1,000,000in/lb, and are normally used where green water loads are a major concern. Manual crank versions are also available.

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The SB-108 VHF/UHF antenna was designed for line of sight voice or data communication circuits. The antenna is
vertically polarized and has a frequency range of 118-520 MHz with a 200 watt average 500 watt peak power capacity. The antenna is designed with a single antenna element to minimize the amount of antennas and coax runs installed on a ship. The rugged design of the SB-108 will provide many years of excellent service in extreme conditions commonly found in shipboard conditions.

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The SB-230 HF omni-directional antenna is a broadband, vertically polarized antenna primarily designed for shipboard use, but can also be used as a fixed base station with a suitable ground screen. The antenna operates over the frequency band of 2 MHz to 30 MHz without the need of a tuner or coupler. It has a power handling capability of 1kW, average. The monopole is 35 feet long and is constructed in two sections, which screw together. The base of the monopole is a flanged coaxial design which bolts directly to the Antenna Base Unit.

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The DCP-2100 is a right hand circularly polarized dipole array enclosed in rugged weatherproof anodized aluminum housing. The antenna is specifically designed for data applications in the 2.1 ~ 2.5 GHz band. The antenna can be mounted on a pole or flat surface such as a wall or bulkhead. A type N female connector is provided on the back for connection.

The fundamental advantage of circular polarization is that all reflections change the direction of polarization, precluding the usual addition or subtraction of main and reflected signals.

Antenna exhibits low sidelobes to minimize multipath.
Rugged design to withstand rigorous service requirements.

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The SB-101/1 is a VHF shipboard antenna capable of transmitting up to 800 watts power between 30-88 MHz. The antenna provides vertically polarized, omnidirectional coverage over the specified frequency range. The antenna is enclosed in a fiberglass housing, making it suitable for use in the extreme marine shipboard environment.

The lightweight element construction is secured inside the housing and damps all vibration frequencies specified MIL-STD-167, Type I vibration. The SB-101 withstands the shock loads as specified in MIL-S-901C for Grade A shock. Military designation is AS-3226.

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The SB-102/1 is a VHF shipboard antenna capable of transmitting up to 100 watts power between 115-162 MHz. The antenna provides vertically polarized, omnidirectional coverage over the specified frequency range. The antenna is enclosed in a fiberglass housing, making it suitable for use in the extreme marine shipboard environment.

The lightweight element construction is secured inside the housing and damps all vibration frequencies specified MIL-STD-167, Type I vibration. The SB-102 withstands the shock loads as specified in MIL-S-901C for Grade A shock. Military designation is AS-2809.

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