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Shares of


(HLIT) - Get Harmonic Inc. Report

rose 46% Tuesday on news that

TheStreet Recommends

AT&T Broadband

will buy optical nodes and DWDM transmission platforms from Harmonic for use in cable plant upgrades throughout the U.S.

AT&T Broadband will use Harmonic's METROLink DWDM system, PWRBlazer nodes, and digital DWDM return transmitters for its upgrades.

Harmonic's shares recently gained $4.63, or 46.3%, to $14.50 in Nasdaq trading.