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Harald Welte laforge at gnumonks.orgOn Tue, Nov 09, 2010 at 06:29:00AM +0000, Wolfgang Spraul wrote: > I could imagine that some ICs on the G2 can do quad, but other > components on the board (filters?) actually pick 3 of those 4? According to the schematics it is a quad-band design. The Antenna switch is a SP5T (two bands tx, 3 bands rx), followed by an additional filter that separates the 850 from the 900 in the RX path. Given that the filters (including the 850/900) are all unbalanced-to-balanced filters, I doubt that somebody would simply not place them (as you cannot replace them just with a 0ohms resistor or soemthing. By removing one filter you would not be able to produce a standard 850/1800/1900 or 950/1800/1900 configuration but something like 850/900/1800 or 850/900/1900 which doesn't maeke sense. My personal educated guess is: they are all quad-band. -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)