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CH02.1 Wifi Regulations
Wi-Fi RF Regulations for the FCC and ETSI Domains
11
Computer Science
Undergraduate 3
01/17/2022
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Term
2.4GHz (FCC)
 Definition
36 dBm (4W) EIRP (P2MP), with 30 dBm (1 W) Tx / 6 dBi, 1:1 ratio. 36 dBm (4 W) EIRP (P2P) with 30 dBm (1 W) Tx / 6 dBi, 3:1 ratio.
Term
U-NII-1 (FCC)
 Definition
Outdoors: Max EIRP 36 dBm (4 W). Indoors: Max Tx 17 dBm (50 mW), 6 dBi.
Term
U-NII-2A (FCC)
 Definition
Max EIRP 30 dBm (1 W), max Tx 24 dBm ( 250 mW).
Term
U-NII-2B (FCC)
 Definition
Not allowed for unlicensed use.
Term
U-NII-2C (FCC)
 Definition
Max EIRP 30 dBm (1 W), max Tx 24 dBm (250 mW). DFS required.
Term
U-NII-3 (FCC)
 Definition
Max EIRP 30 dBm (1 W), max Tx 24 dBm ( 250 mW).
Term
2.4GHz (ETSI)
 Definition
Max EIRP 20 dBm (100 mW), max Tx 17 dBm ( 50 mW) on 3 dBi. 1:1 rule.
Term
Band 1 (ETSI), Sub-band 1 (U-NII-1)
 Definition
Max EIRP 23 dBm (200 mW).
Term
Band 1 (ETSI), Sub-band 2 (U-NII-2A)
 Definition
Max EIRP 23 dBm (200 mW) with TPC. Max EIRP 20 dBm, (100 mW) without TPC. DFS required.
Term
Band 2 (ETSI) (U-NII-2C)
 Definition
Max EIRP 30 dBm (1 W) with DFS and TPC. Max EIRP 27 dBm (500 mW) with DFS and no TPC. Max EIRP 20 dBm (100 mW) without TPC and DFS.
Term
Band 3 (ETSI) (U-NII-3)
 Definition
Under discussion. Not allowed for Wi-Fi yet. Target 14 dBm (25 mW).
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