426 44822 MHZDSSS AND HR/DSSS CHANNELSDSSS AND HR/DSSS OPERATE IN...

2. - CWTS CERTIFIED WIRELESS TECHNOLOGY SPECIALIST OFFICIAL STUDY GUIDE EXAM PW0 070 PHẦN 4 PPS 2. - CWTS CERTIFIED WIRELESS TECHNOLOGY SPECIALIST OFFICIAL STUDY GUIDE EXAM PW0 070 PHẦN 4 PPS
CWTS CERTIFIED WIRELESS TECHNOLOGY SPECIALIST OFFICIAL STUDY GUIDE EXAM PW0 070 PHẦN 4 PPS
2.426 2.44822 MHz

DSSS and HR/DSSS Channels

DSSS and HR/DSSS operate in the 2.4 GHz industrial, scientific, and medical (ISM) license

free band. This band has 14 available channels. Depending on the country and location, all

14 channels may not be available. Table 5.1 shows the 14 available channels in the 2.4 GHz

ISM band.

TA b l e 5 .1 2.4 GHz ISM Band Consists of 14 Available ChannelsChannel Frequency (GHZ) Americas EMEA Israel* China Japan1 2.412 ✓ ✓ ✓ ✓ ✓2 2.417 ✓ ✓ ✓ ✓ ✓3 2.422 ✓ ✓ ✓ ✓ ✓TA b l e 5 .1 2.4 GHz ISM Band Consists of 14 Available Channels (continued)7 2.442 ✓ ✓ ✓ ✓ ✓8 2.447 ✓ ✓ ✓ ✓ ✓9 2.452 ✓ ✓ ✓ ✓ ✓10 2.457 ✓ ✓ ✓ ✓ ✓11 2.462 ✓ ✓ ✓ ✓ ✓12 2.467 ✓ ✓ ✓13 2.472 ✓ ✓ ✓14 2.484 ✓

* Israel allows channels 1–13 indoors, but outdoors only 5–13.

Figure 5.8 shows the 14 available channels and the amount of overlap in the 2.4 GHz

f i g u r e 5 . 8 2.4 GHz ISM band allows 14 channels.Power (mW)14 channels in the 2.4 GHz ISM band