This part is a kind of semiconductor called TK-3107.

Function of this product has UHF FM TRANSCEIVER SERVICE MANUAL.

Manufacturers : Kenwood

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Some of the text within the PDF file :

Compact VHF/UHF FM Portable Radios TK-2107/3107 The Primary Communicator Rugged, fully featured and easy to handle, Kenwood’s 16-channel TK-2107/3107 simply makes good business sense. Designed to meet tough MIL-STD 810 C/D/E specifications, this portable radio is extremely reliable making it perfect for security, service industries and a wide range of commercial applications with simple yet demanding operational requirements. It even provides all the convenience of hands-free operation when used with the optional headset and microphone. TK-2107/3107 Features Sixteen RF Channels with QT/DQT Tone Keys These compact and easy-to-use VHF/UHF portables are available with sixteen RF channels. Each RF channel can be assigned a Quiet Talk (QT) and Digital Quiet Talk (D [ ... ]

TK-3107 PDF Datasheet Download