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  • Binatone ADSL2+ Wireless Router, DT845W

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  • DT845W Torn Apart

    DT845W ADSL2+ router is primarily built on the ADSL solution from Trendchip. Wireless LAN capability is provided by a chipset from Ralink. (Trendchip and Ralink are now both part of Mediatek.) Apart from the core ADSL and WLAN chips, there is an Ethernet transceiver chip from IC+, memory modules from ESMT and Winbond, and voltage regulators from OnSemi. One curious observation we make is the length of the WLAN antenna -- why so long?

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  • Scientific Atlanta Cable Modem, 2100R2

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  • 2100 R2 Torn Apart

    Scientific Atlanta's 2100R2 Cable Modem is primarily built on the Cable modem RF and baseband solutions from Broadcom. In addition, there are the usual memory modules and voltage regulators etc.

    The shileding for the downlink RF portion can be seen clearly. Interestingly, the uplink PA is integrated with the baseband chip.

    For some reason there is no ON/OFF switch on this box.

    This modem was in service till about 4 years back, but today, a Modem without WLAN -- no way!

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  • Linksys Wireless LAN USB Adaptor, WUSBG54

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  • WUSB54G Torn Apart

    The USB WLAN adaptor WUSB54G is built on a Wireless LAN chipset from Ralink. (The same chipset is used in the ADSL router DT845W). This is pretty much all there is inside this box, apart from the memory modules. The adaptor is powered by USB.

    Here again the shileding for the sensitive components is visible. In fact, there is an additional shield for the RF portion.

    A more recent adaptor would be more like a dongle. Of course, with WLAN becoming a must-have feature for all computing devices, such adaptors will soon be a rarity -- obsolete!

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