Location and Monitoring Service ("LMS"). [Part 90 Subpart M]
A: 902.000 - 904.000 Non-Multilateration
B: 904.000 - 909.750 Multilateration
C: 909.750 - 919.750 Non-Multilateration
D: 919.750 - 921.750 Multilateration and Non-Multilateration
E: 921.750 - 927.250 Multilateration
F: 927.250 - 927.500 Narrow band associated with sub-band E
G: 927.500 - 927.750 Narrow band associated with sub-band D
H: 927.750 - 928.000 Narrow band associated with sub-band B
- Multilateration systems - use spread-spectrum technology to locate vehicles (and other moving objects) with great accuracy throughout a wide geographic area.
- Non-multilateration systems - typically use narrowband technology to transmit data to and from vehicles passing through a particular location.
- Automatic Vehicle Monitoring Service ("AVM") - 903-912 and 918-927 MHz [90.363]