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Technology Stocks : Qualcomm Incorporated (QCOM) -- Ignore unavailable to you. Want to Upgrade?

To: Robert Sheldon who wrote (23421)	2/26/1999 1:31:00 AM
From: Harvey Rosenkrantz	Respond to of 152472

Sorry about the imprecise language. I am not an engineer. It was my interpretation of the reason given for QCOM not entering the Japanese handset market at the present time.

To: Robert Sheldon who wrote (23421)	2/28/1999 3:34:00 AM
From: Maurice Winn	Read Replies (1) \| Respond to of 152472

Handsets and VCOs Glaze over Ramsey, it's more technical stuff. ----------------------------------------------------------------- I am pleased to hear your only concern regarding the Japanese market opportunity is that “their cellular frequencies are different from ours”. The handset manufacturer merely has to adjust the VCO (voltage controlled oscillator – VCOs isolate and hold a wireless signal) to acquire & accommodate almost any frequency. Since this is a standard process in the component manufacturing anyway, I do not see your concerns as an insurmountable hurdle. ------------------------------------------------------------------ Here is the real oil: It's not so easy. First, during the rapid assembly process of making phones, each and every VCO is not "adjusted." It either locks and performs (based on specs) or it is replaced. Yes, every phone is tested, but for overall function not drift of VCO/TCXO, although aquisition time and frequency drift of the phone will lead back to these components. More important is the fact that there are frequency plans and many other frequency dependent parts such as SAW filters... read: rake receivers) that don't allow one to just "adjust" the VCO to meet a new market requirement. The Japanese actually made their frequency plans somewhat inverted to the USA. They tend to use USA transmit frequency for receive and vice versa... albeit slightly off our plans, thus really complicating the issue, forcing manufacturers of phones to build for an exclusive Japanese market. In designing a phone, one must look at the entire frequency plan, seeing where there may be issues of interference of the incoming signal and the mixed resultant signals; intermod responses and even frequency spurs that can arise from frequency mixing and locking signals. It's a bit more complicated than, "Tweak that VCO". So there you are folks, more orthogonality. Please don't ask me supplementary questions. I might not have the answer. Mqurice