I think you are using BBH hopping ?
In this case, one timeslot in the BCCH TRE is using different frequencies, not only BCCH.
Only the timeslots which are carried onto the BCCH frequency are emiotted at full power.
If BBH is enabled, then those timeslots will change each TDMA frame.
Only TS0 of TRX1 is at full power all the time.
Other TS will be at full power only when they’re hopping onto the bcch frequency.If there are 4 TRX, the TS5 of TRX1 will be transmitted at (one letter = 1 TDMA frame)
H-L-L-L-H-L-L-L-H-L-L-L-H-L-L-L…
H = max power
L = “power controlled” power