UNSPSC 25173119: Non-directional beacon and associated equipment

The NDB is basically a simple transmitter radiating an omnidirectional signal which is modulated at intervals with the identification code. The basic signal is known as a carrier and is radiated at the frequency specified for the particular aid. The identification code is a 400 or 1020 cycle note superimposed on the carrier. Some installations include voice modulation to provide landing information and some others, for remote monitoring purposes, have one or two pips between idents.

UNSPSC 25173119 Non-directional beacon and associated equipment is a Commodity code tracking state and local procurement for specialized monitoring and detection instrumentation deployed across water, wastewater, and environmental systems. The recent-opportunities block shows no relevant solicitations tagged to this code; instead, the opportunities posted under this code number cover MRO supplies, chemical-resistant water-system parts, pressure gauges, flow analyzers, SCADA upgrades, and other water-utility infrastructure—none of which fall within the scope of non-directional beacons or beacon-related equipment. The code's nominal scope does not align with the actual buying activity captured in the posting.

State and local governments buying under this code are purchasing instrumentation for water production, wastewater treatment, and environmental monitoring—specifically pressure transmitters, temperature controls, cyanide analyzers, atmospheric monitors for hazardous gases, and related process-control hardware. Recent issuers include the City of Tucson (MRO supplies RFP), Tucson Water (chemical-resistant parts IFB), the City of Phoenix (pressure and temperature instrumentation IFB, atmospheric monitoring IFB), and the City of Arlington (cyanide analyzer RFP), alongside utility districts in Florida and Arizona. The geographic spread spans Arizona, Florida, New Mexico, Connecticut, Texas, and Kentucky. Representative solicitations include the City of Phoenix's IFB 26-0398 for pressure and temperature instrumentation with a five-year term commencing October 2026 and the City of Phoenix's IFB-27-0435 for atmospheric monitoring instruments with a September 4, 2026 response deadline. However, the code shows little relevant recent activity; the opportunities listed are predominantly water and wastewater utility procurement for measurement and control systems, not beacon equipment. Firms targeting this code should verify alignment with the actual scope of opportunities before investing in pursuit strategy.