The U.S. Federal Communications Commission (FCC) has adopted rules geared specifically to level probing radars (LPRs) that allow these devices to operate anywhere in the country without a license. 

The Measurement, Control & Automation Association (MCAA) worked with the FCC to provide information to the technical office within the FCC, which crafted a Notice of Proposed Rulemaking in 2012. The FCC action amends the existing rules to account for LPR special technical characteristics, which posed previous obstacles to FCC approval.

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Specifically, the order modifies Part 15 of the FCC rules for level probing radars to operate on an unlicensed basis in the 5.925-7.250 GHz, 24.05-29.00 GHz, and 75-85 GHZ bands, and revises the measurement procedures to provide more accurate and repeatable measurement protocols for these devices. 

In its Report and Order, the FCC notes:

New Section 15.256 will allow for the introduction of more diverse applications of LPR in several frequency bands and improve the accuracy and reliability of these level-measuring tools beyond what is achievable under Section 15.209. 

The new rules will also help to streamline equipment development and certification of LPR devices, allowing manufacturers to take advantage of economies of scale by marketing the same LPR device for a variety of RF level-measuring applications, as well as provide a simplified method for measuring the radiated emissions from these devices.

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