2.3 2.4 GHz vs 5 GHz Flashcards
2.4 GHz Spectrum
a. Long Range communications
b. better penetration through barriers
c. Slower data rates than 5 GHz
d. Higher rate of interference because longer range
e. 11 Channels in Total
2.4 GHz Channels
Has 11 channels in total
Many devices us 2.4 = crowded
NON-overlapping channels = 1,6 & 11
— Offer the best chance of minimizing interference
Wireless Channels
where data runs on
ONLY runs on 2.4 / 5 GHz
i. Lane of communication
ii. More people use = more crowded / slower
5 GHz Spectrum
a. Short Range communication
b. Faster data rates than 2.4 GHz
c. Low chance of interference because of its shorter range
d. NOT many devices use 5 GHz
e. More channels the better
f. TOO much crowd = change the channel
g. poor penetration through barriers
5 GHz Channels
has 45 in total & 24 non-overlapping
i. 20 MHz [bands] use Channels = 36, 40, 44, 48, 149, 153, 157, 161, 165
ii. 40 MHz [bands] use Channels = 38, 46, 151, 159
Radio Mode
2.4 GHz 802.11n ONLY
Radio Band
Wide – 40 MHz Channel
i. Can have primary & secondary channels
ii. Standard – 20 MHz channel
iii. Standard Channel [1]
2.4 / 5 GHz
Devices receive communication on 2.4 / 5 GHz
Knows what data is for = phone, voice, etc