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UNII Device Interference Advisor (UDIA)

The UNII Device Interference Advisor (UDIA) is an online database and registry containing detailed information about Terminal Doppler Weather Radar (TDWR) systems and registered UNII devices.

This tool allows a user (network operator or installer) to:
• Search and confirm if their device is operating within 35 km proximity of TDWR site(s)
• Voluntarily register certain technical information into the online database


TDWRs are Doppler weather radar systems strategically positioned near 47 major airports to detect wind shear and microbursts associated with thunder storms, to increase the safety of aircrafts landing and departing from airports.

TDWR frequencies (5.60-5.65 GHz are shared with Unlicensed National Information Infrastructure (UNII) band frequencies (5.47-5.725 GHz) which are used by many Wireless ISPs and other outdoor wireless network operators. As a result, it is essential that systems and policies are effective in mitigating interference issues.

The UDIA database was developed to promote cooperation between the federal agencies including the National Telecommunications and Information Association (NTIA), the Federal Communications commission (FCC), the Federal Aviation Administration (FAA) and the wireless industry and to ensure safe and effective operation of the FAA's TDWR network.

This product is protected by US and international patents and patent filings. Click

here to review.
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