We are all here to help, if we keep gaining knowledge from each other we will be able to maintain Sprint's new network once all the new hardware goodies are installed and 100% completed. But yes 1x RTT stands for "1 times radio transmission technology," which is 1900MHz PCS. 1x 800 will do a good job penetrating walls, buildings, dense areas, etc...but has its downs as well just as other higher frequencies. I use to be a police officer/firefighter for 5 years and we utilized a county-wide radio system that was a Motorola 800 trucked system, every time we had to go down into a parking garage or apartment tower no radio service which was a safety issue. But again this was a radio system and I'm 90% sure site/repeater spacing was the biggest culprit. Sprint has plenty of sites here and 1900 does a good job around here so hopefully 800 will just make the experience even better.