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The passive sensor antenna was a sensor antenna manufactured by Siep-Irol. One of these was installed on the modified YT-1300 Millennium Falcon, and used with a Fabritech ANy-20 active sensor transceiver. As Fabritech and Siep-Irol devices were not generally compatible, Han Solo modified the passive sensor array and rigged the Falcon's computer to read it as a Fabritech-friendly unit.[1]

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