UNSPSC 25173120: Non-Directional Beacon (NDB)

A non-directional (radio) beacon (NDB) is a radio transmitter at a known location, used as an aviation or marine navigational aid. As the name implies, the signal transmitted does not include inherent directional information, in contrast to other navigational aids such as low frequency radio range, VHF omnidirectional range (VOR) and TACAN. NDB signals follow the curvature of the Earth, so they can be received at much greater distances at lower altitudes, a major advantage over VOR.

However, NDB signals are also affected more by atmospheric conditions, mountainous terrain, coastal refraction and electrical storms, particularly at long range.

UNSPSC 25173120 Non-Directional Beacon (NDB) is a Commodity code. The recent state and local procurement opportunities filed under this code show minimal relevant activity—of the 27 posted opportunities in the block, none actually solicit Non-Directional Beacons or related aviation navigation equipment. The opportunities instead span wastewater infrastructure components (Tampa water inventory panels), concert hall lighting retrofit (Wichita), water lab testing services (Meriden, Santa Monica), SCADA system upgrades (Gallup), vocational education equipment (Texas school districts), predictive maintenance services (Hillsborough County), vendor networking events, and survey participation. The code assignment appears to reflect metadata mismatches in state and local procurement systems rather than genuine demand for NDB equipment or systems.

State and local buyers using this code—or more accurately, tagged with it—include city water departments, county utilities and public works agencies, transit authorities, and school districts across Florida, Texas, Connecticut, New Mexico, Arizona, Kansas, and other jurisdictions. The geographic spread is broad but diffuse, with no concentration in specific regions. Given the absence of substantive NDB solicitations in the recent pipeline, the code shows no active market opportunity worth pursuing. Vendors with aviation navigation or specialized navigation-aid expertise should verify directly with state procurement offices and aviation-focused transit authorities (such as airport authorities or FAA-adjacent contractors) rather than rely on UNSPSC tagging to surface relevant opportunities in this commodity space.