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Publication Number: 227764 Rule Parts: 18 Publication Date: 04/09/2007
Keyword: Part 18, Explosive Detection, Nuclear Quadrupole Resonance

First Category: Radio Service Rules
Second Category:

Question:   What are the regulations that apply to a device which uses Nuclear Quadrupole Resonance (NQR) techniques and uses RF to detect explosives?

Answer:   Based on the description of the system and its operation, the device is classified as a Part 18 device.  The device operates using the Nuclear Quadrupole Resonance (NQR) techniques similar to the Nuclear Magnetic Resonance principles used in MRI scanners.  The RF energy is used to excite the molecules to create nuclear resonance in a material, and is not used for communications.  This interpretation is restricted to devices that are operated for the purpose of explosives detection as non consumer equipment.  Devices subject to the Part 18 requirements must meet the radiated emission limits in Section 18.305 for miscellaneous equipment operating on a non-ISM frequency.  Also, according to Section 18.203(b), the device must be verified or compliance with the Commission's rules as non-consumer equipment prior to marketing.


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