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Technology Stocks : Nokia (NOK) -- Ignore unavailable to you. Want to Upgrade?

To: 49thMIMOMander who wrote (8507)	12/10/2000 5:49:13 AM
From: 49thMIMOMander	Respond to of 34857

The foolishness of AMPS compatible TDMA was not only the 30kHz bandwidth, but also demanding the AMPS duplex filters in a TDMA ping pong system.. But that gets fixed with GSM and GPRS, good that AMPS and AMPS-TDMA customers could roam almost freely, wasting battery and demanding external antennas, not knowing which system they used. Ilmarinen. Analog NMT is disconnected the 21th of december thanks to not trying to mix ping-pong GSM and talk-while-you- listen-NMT, bye-bye, duplex filters, although welcome again with WCDMA.

To: 49thMIMOMander who wrote (8507)	12/10/2000 10:49:33 AM
From: Eric L	Respond to of 34857

Ilmarinen, <<GSM handset ... except for those USA models needing to be AMPS compatible >> Their are relatively few dual mode, dual band AMPS/GSM 800/1900 MHz handsets in use in the USA. Nokia was first to market, but this was about 3 years after GSM launched here in November 1995. The initial user was Western Wireless, the 2nd BellSouth. Western Wireless, and Bellsouth were traditional AMPS cellular carriers that both obtained 1900 MHz PCS spectrum and built out GSM in that spectrum. I would guess that < 5% of GSM handsets in the USA are AMPS compatible. Many carriers never offered them. - Eric -