freq_center - how use? (customing freq into FHSS.cpp)

[Stasmor]

Hello all!
Please tell me, about what this attribute/field (freq_center)?
How its must be calculated?
I want modify:
{"FCC915", FREQ_HZ_TO_REG_VAL(903500000), FREQ_HZ_TO_REG_VAL(926900000), 40, 915000000}, to
{"FCC750", FREQ_HZ_TO_REG_VAL(750500000), FREQ_HZ_TO_REG_VAL(770900000), 40, 750000000}
will it work, or what i must change for 750 MHz module?
Thank you!

[JyeSmith]

ELRS doesnt support any 750M hardware.