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HF Antenna-Tower Installation and Towers Removal

This project consisted of the removal of four guyed towers and the installation of a new, eighty foot tall, self-supporting tower and a new RLPA with a rotator and mast. After conducting calculations, gas-powered metal saws and telescopic all-terrain fork lift were used to remove the four guyed towers. The decommissioned towers, between 60 and 80 feet in height, were cut and removed from the site, and the old foundation was removed by a local excavating company.

Next, the new antenna, tower, and transmissions lines were delivered to the site via contractors and rental equipment. A local contractor also prepared the new foundation for the new RLPA tower, while the rebar cage was delivered and constructed by a local supplier. The ...

Profile 2

Public Safety and Transportation Operations Center

Our project involved the installation of antennas and coaxial cables on the roof of the newly completed PSTOC, and 96 antennas and coaxial cables on the monopole. Five cables ran to the top mounted antennas, and the monopole received runs to each platform antenna mounting location. All work was performed by hand with a rope and pulley, to decrease the likelihood of damage to the other coaxial cables.

The custom antenna mounts and cable brackets were all delivered to the customer on site by USTS, and the top of the pole was rigged to a small gin-pole to enable access to the four platforms. Multiple coaxial cables were pulled through complex conduits from the radio rooms to the roof, and into the monopole. The tower was analyzed ...

Profile 3

Communications & Telemetry Support Tower Construction

Working with a steel tower, rebar, and concrete, this project involved the design, construction, and installation of a 180-foot communications and telemetry support tower. The tower itself was made of extra-heavy, solid steel in an effort to adhere to the client’s tight tolerances. Additionally, clusters of antennas were mounted on the tower and held in a constant position to enable the calibration of a 18.2 meter and 5.2 meter up/downlink satellite tracking dishes.

The construction site included two communications shelters, and was completed using geotech fabric, gravel, and chain-link fencing. All materials and tools were delivered to the client on location by USTS and a subcontractor.

The drilled caisson tower ...

Profile 4

Communications Self-support Tower Restructure

After analyzing this 382-foot communications self-support tower and finding that components were reaching maximum design loads, we undertook a project to restructure the tower, which included the use of temporary bracing for complete removal and the replacement of bracing. Custom-made redundant bracing was also added.

First, a custom-designed temporary brace system was engineered to allow component removal. A rigging plan was composed to accommodate the removal of key bracing, and to serve as a means of lifting personnel to otherwise inaccessible locations on each of the three faces of the tower. A man-rated hoist and trolley line were used in this process, and all hardware and steel components were removed and replaced. The project ...

Profile 5

HF Radio Multiple Tower Arrays

Performed in an active RF environment, we constructed and installed two communications towers and a large HF antenna. One of the towers was to support the HF antenna, and the other tower was designed for 6 two-way radio antennas. Each of the 6 antennas that were relocated were connected to critical and active radios stems, so down time was coordinated and minimized.

All materials and tools were shipped via an overseas commercial carrier and delivered to the customer on site. Working with rebar and concrete delivered from a local plant, transmission lines were installed in trenches, which were dug by hand to minimize cable damage, and the rebar cage was tied by local workers. Designed to meet client requirements and design load ...

Profile 6

FM Shark Cage Antenna Installation

This project involved relocating existing Bogner antennas, removing a 20 year old existing FM broadcast "shark cage" antenna array, and installing a new FM “shark cage” antenna array. Because there were a significant number of additional active antennas on the tower during the installation process, the project was coordinated with the tower owner.

Mounting hardware from Europe was adapted to meet the new antenna’s requirements, and all other materials and tools were shipped using our own trucks. A bucket hoist and 5,000 feet of line were moved from the shop and installed on site to lift both personnel and equipment as needed. Extensive rigging was required to accommodate the installation of a number ...

Profile 7

High-Intensity Dual Lighting Installation

In order to replace an old, high-intensity LED lighting system with a Flash Technology system featuring LED Red lights, we incorporated rigging and lifting to install the system safely in an urban setting. The planning, staging, and execution of this project was complex, due to the wide number of clients involved—as a result, we worked at night to minimize down time for active broadcast stations.

Rigging included 6-ton blocks, steel chokers, a Man Basket, and a Man-rated hoist with 3,000 feet of 3/8" steel wire rope. A 2,200-foot synthetic rope was also required. All work was carried out with preparation for extreme weather conditions, and daily meeting and inspections were performed on all equipment and rigging. Trial lifts ...
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