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Big Lift Brings Dielectric Antennas to the Top of Chicago's Willis Tower
⏷ This article is from 2026-06-01 • More recent news →
xCruzo Brief
Big Lift project culminated in replacing Willis Tower's aging Dielectric triple-stack antenna with two new UHF systems for WLS-TV, WFLD-TV and WMAQ-TV. Installation Services completed the complex upgrade, following nearly a year of planning that included structural analysis, fabrication, FAA/FCC coordination, city approvals, and extensive lift planning. The original 18,500-pound triple-stack was dismantled using Helicopter Express' heavy-lift helicopter, then replaced with a Dielectric TFU double-stacked slot antenna for WLS-TV and WFLD-TV and a separate single-slot antenna for WMAQ-TV. The work also involved a new top plate, transmission lines, and a multi-floor integration to ensure long-term performance.
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