TFCC

Unveiling the Certification Standards for Bluetooth Speakers in the United States

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Unveiling the Certification Standards for Bluetooth Speakers in the United States

FCC certification frequency range: Wireless Bluetooth speakers must operate within the frequency range specified by the Federal Communications Commission (FCC) to ensure that the product does not interfere with other communication devices and can achieve good connection quality. Radiated Power: The FCC requires that the radiated power of wireless Bluetooth speakers during transmission does not … Read more

Common Factors for Ulnar-Sided Wrist Pain in Athletes

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Common Factors for Ulnar-Sided Wrist Pain in Athletes

MEM Introduction Ulnar-sided wrist pain is common among athletes, and the usual causes include independent or combined injuries to the triangular fibrocartilage complex (TFCC), the extensor carpi ulnaris (ECU), and the distal radioulnar joint (DRUJ). Sports that require repeated forearm pronation/supination, radial/ulnar deviation, and axial loading can easily lead to ulnar-sided wrist pain in athletes. … Read more