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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting

QCOM 159.42

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Jan 16 3:59 PM EST

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To: engineer who wrote (27349)	10/2/2002 9:57:13 AM
From: waitwatchwander	Read Replies (1) of 197272

re 450mhz chips Hi engineer, I assume that the 450mhz phones are using non-zif msm chipsets (i.e. 3xxx and 5xxx). Will they all work with appropriate SAW filters? The other question I was hoping you could address ... Is it practical to incorporate 450mhz into the 6xxx series? I briefly remember reading somewhere something about the filters for 450mhz being large (in surface area?). Is this correct? If you (or others) could post thoughts on multi-mode zifs (i.e. combinations of 450mhz, 800mhz, 1800mhz, 1900mhz and 2100mhz), it would be appreciated. Obviously, 1900mhz and 1800mhz are today's reality. What needs to be considered in extending that reality down to 450mhz and up to 2100mhz? Am I correct, in assuming that the current batch of 6xxx zifs don't support analog/cdma at 800mhz (I'll check this out later today)? Thanx to whoever posts whatever related info. Trevor

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