The 900MHz range of the radio spectrum used in legacy data collection computers is typically in the band extending from 902MHz to 921MHz.

900MHz radios have an effective range of 3000 to 5000 feet outdoors. No RF site license is required.

The data rate is about 100 – 400Kbps. Each manufacturer's implementation of a 900MHz radio system was completely proprietary.

900MHz is much faster than UHF but has a smaller area of coverage. It is also less susceptible to RF interference than UHF.