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Paso 15
The RF module, in all its blue glory. We spliced together two photos, so this image shows the front and back of the PCB.
  • The RF module, in all its blue glory. We spliced together two photos, so this image shows the front and back of the PCB.

  • The Broadcom 802.11 chip had the markings BCM4321KFBG.

  • We removed the EMI shield covering the RF chips. We uncovered a Skyworks SKY652225-11 R8, a Broadcom BCM2G55KF86, a Broadcom BCM2046, and an SST 39VF200A. We also found eight of Anaren's 1mm square baluns interfaced between the Broadcom and Skyworks chips, presumably running at 2.4GHz and 5GHz.

  • And the backside had another chip marked with BCM94321COEX2.

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