Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

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

To: bdog who wrote (7508)	1/23/1998 6:06:00 PM
From: JGoren	Read Replies (2) \| Respond to of 152472

Vodaphone trial details to be released February 11 or 12, so I hear. Feb. 11 is the annual analysts meeting. Now if the company can get a couple of European companies to overlay CDMA, it will be the deathknell for GSM.

To: bdog who wrote (7508)	1/23/1998 6:30:00 PM
From: Walter Liu	Respond to of 152472

bdog: Any high frequency RF signal will have a hard time penetrate a metal box with no hole. This is not a CDMA problem, it is a known phenomenon for these RF signals. The way to cover subway is to put little attennas in the subway ceilings/walls. On the back of the attenna, there is a cable that connects it to the cell site. Submarines can communicate with very low frequency <20 Hz, which can penetrate the ocean floor. But for high data rate transmission, it has to surface and use another frequency to talk to the satellite. Try to listen to your portable AM/FM radio next time you get in an elevator. And listen again when the door just open a little bit. You will know why GSM, CDMA, AMPS phone just won't work in a metal box.