In FCC mode there should be 7 channels available in 20MHz mode and 3 channels available in 40MHz mode. If your Goggles 2 are supplied with CE mode (to meet European regulations), they will be limited in output power (only 25mW) with the channels limitations. There will be only 1 channel available in 40MHz mode and 3 channels available in 20MHz mode.

You can perform an "FCC hack" to unlock higher output power (greater range and signal penetration) and more channels (allows more pilots in the air at the same time) if it's legal to do so where you fly. To make the change you need to use a file to put in the glasses. Note that this is NOT the naco text file we used before with Vista, but the process is similar.

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DJI FPV Goggles 2 FCC Unlock Guide

To switch to FCC mode, the method is exactly the same as for the DJI Avata drone. Just take the "ham_cfg_support" file and place it in the root directory of the SD card you will then insert into the glasses.

Other related articles:
How to unlock more range on DJI FPV Goggles V2
DJI O3 Air Unit FCC How to unlock more range
DJI Avata How to unlock more power and range