patcat88
join:2002-04-05
Jamaica, NY
| reply to jaminus
Re: I don't understand
said by jaminus  :But on the flipside, 1900mhz signals penetrates buildings more easily than 850mhz signals, so mobile users in dense buildings with lots of metallic structural elements might actually notice better coverage thanks to the shift of EDGE from 850mhz to 1900mhz. Wrong. Try talking to a Sprint or Tmobile user and you will hear about how they enter buildings and goto 1 bar or loose service, meanwhile their Verizon and ATT friends are fine.
When 1900 gets degraded, either through air, or brick, or wood, it degrades faster/more for the same obsticle than 850.
Same reason as 802.11A vs 802.11G.
Now you can thearetically crank up the transmit power on 1900 to be much higher than 850 to give the same reception as 850, but the cellphones can't scream back loud enough to the tower, or the 1900 signal will collide with another 1900 signal on the same channel, and nobody will have service where the 2 arcs intersect. Increasing the TX power also creates a larger marginal service area as the circle of coverage of that tower expands. |
