Amped Wireless SR10000 - High Power Wireless-N 600mW Range Extender - Manual (Page 25)

SR10000 USER’S GUIDE
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Preamble Type: Defines the length of the Cyclic Redundancy Check for communication between the Range
Extender and roaming Wi-Fi users.
IAPP: Inter-Access Point Protocol
STBC: Space Time Block Coding improves reception by coding the data stream in blocks.