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To: S100 who wrote (99255)	5/16/2001 8:40:23 PM
From: 49thMIMOMander	Respond to of 152472

"Snip-snap, little channel card." Somewhere on the Nokia.com there is a picture of the basestation. GSM channel cards at middle height, 3G-WCDMA cards closer to the floor. The real problem is of course the lesser penetration of higher carrier frequencies, but where 1800MHz GSM already exists (in all of urban Europe) the difference between 3G 2.1GHz and GSM-1.8Ghz is small. However, the jump from GSM-900Mhz to 2.1GHz, in combination with smaller TX-power is "important". That is why all "incumbant" operators in scandinavia have promised 3G coverage only in major cities to start with, GPRS at 900MHz in rural areas. (the swedish auction went kind of hay and mast wired as a result, but they are slowly sorting out the mess) ZIF-NIF makes it easy to make GPRS handset for all four frequencies, 900-1800-1900-2100Mhz!! That is, not one line of code need to be rewritten going from 1900 to 2100MHz, not even carrier trackers due to slightly increased doppler effect.. And only few need to watch real time xxx-rated movies at full 3G speed while out in the rural, pastoral nature (at least the in scandinavian, mostly selfsufficient) Manx is of course a slightly more kinky thing as many small islands and some large ones. (EU has these special procedures for these islands, and especially for London, they need some special stuff to survive) Ilmarinen. That is, having already invested in a 1800MHz GSM network is crucial, depends on penetration rate of the population and level of operator investments (much more GSM channels in the higher band, smaller cells, perfect for densly populated areas) The GPRS-3G upgrade for the network, base station protocol is still the most important investment. Sonera has already publicly suggested installing GSM-GPRS on the 3G bands...(tough stuff)