Much of that frequency range is used for UHF TV broadcasting in the US. As such it is probably not useful enough for the scanner manufactures to include. The Whistler TRX series is missing much of this range as well (512-764 MHz). Interestingly my older Uniden BR330T does receive in this range. In fact it receives everything from 100 KHz to 1300 MHz except for the old analog cellular phone ranges (824-849 and 869-894), which are blocked by law in the US.