UNSPSC 32101547: Limiter

A single component that is used for vacuum tube, semiconductor element or metal rectifier. And this product removes the noise signal for the radar or wireless receiver.

UNSPSC 32101547 Limiter, a Commodity code, appears in recent state and local solicitations primarily for in-building radio frequency (RF) coverage enhancement systems—specifically bi-directional amplifiers (BDAs), distributed antenna systems (DAS), and emergency responder radio coverage system (ERRCS) components used to extend 700 MHz public safety radio signals into buildings and enclosed spaces. The code also captures discrete RF limiting and protection components embedded in broader communications infrastructure procurements, though the concentration of recent activity centers on turnkey ERRCS design, installation, and optimization rather than limiters as standalone commodity purchases. Issuing bodies include municipalities (City of Phoenix), counties (Santa Clara, Polk, Hillsborough), state institutions (Texas A&M University System, University of Wisconsin-Madison), school districts (Rockwood School District, Polk County Schools), and state-level cooperative purchasing vehicles (Sourcewell on behalf of Minnesota and Washington jurisdictions). The City of Phoenix has posted two separate in-building RF coverage solicitations under this taxonomy within the past three months, indicating repeat procurement activity for ERRCS infrastructure. Representative work includes design, installation, testing, and post-installation optimization of DAS and BDA systems in municipal buildings and airport facilities, with contracts typically spanning three to five years and including 24-month warranties, emergency response obligations within four hours, and compliance with NFPA 1225 and UL 2524 standards.

Recent opportunities concentrate in Arizona and Florida, with secondary activity in Texas, Minnesota, Washington, Missouri, and Wisconsin. The City of Phoenix Finance Central Procurement issued IFB-26-0355 for in-building radio frequency coverage revision with responses due July 10, 2026, for a five-year contract commencing August 25, 2026, requiring turnkey ERRCS design, installation, and testing under DBE-neutral program requirements and FAA compliance obligations applicable to Phoenix's three airports. An earlier Phoenix IFB-26-0148, due April 30, 2026, similarly sought five-year ERRCS services with detailed RF coverage evaluation, design, and installation milestones. The Polk County School Board posted ITB 033TD0426 in February 2026 for semi-annual and annual ERCES inspections and 5-year grid re-testing under NFPA 1225 standards, due March 12, 2026. Sourcewell issued RFP #061626 on behalf of multiple Washington and Minnesota counties for law enforcement equipment with a June 16, 2026 deadline, establishing a cooperative contracting framework available to thousands of governmental agencies across the United States and Canada. The County of Santa Clara issued RFQ requesting Motorola radios and accessories for the Office of the Sheriff, due June 17, 2026, representing a parallel but narrower RF equipment procurement outside the primary ERRCS domain.