Juniper SRX300 Series Reference Manual page 93

The default channel bandwidth is 20 MHz for the 2.4 GHz radio and 40 MHz for the 5 GHz radio. Setting
the bandwidth to 40 MHz or 80 MHz reduces the number of available channels for use.
Table 55 on page 95 lists the channels supported on the 2.4 GHz radio.
Table 55: Channels Supported on the 2.4 GHz Radio (20 MHz and 40 MHz Bandwidth)
Band
2400~2483.5 MHz
Table 56 on page 96 through
Channel Number
1
2
3
4
5
6
7
8
9
10
11
12
13
Table 58 on page 98 list the channels supported on the 5 GHz radio.
Center Frequency (MHz)
2412
2417
2422
2427
2432
2437
2442
2447
2452
2457
2462
2467
2472
95