Before revision: RF technologies commonly used for AMR Narrow Band (single fixed radio frequency) Spread Spectrum Direct-sequence spread spectrum (DSSS) Frequency-hopping spread spectrum (FHSS) There are also meters using AMR with RF technologies such as cellular phone data systems, ZigBee, Bluetooth, Wavenis and others.
After revision: RF technologies commonly used for AMR Narrow Band (single fixed radio frequency) Spread spectrum Direct-sequence spread spectrum (DSSS) Frequency-hopping spread spectrum (FHSS) There are also meters using AMR with RF technologies such as cellular phone data systems, ZigBee, Bluetooth, Wavenis and others.