Dear Andy
If battery tray the label reads:T600, FCC####1410, you have a T600-D that transmits 24dBm/approx. 255mw. This is a T600-D that was modified by adding the motor upgrade and new gimble plate. Transmitter was not upgraded! Range is 2KM! ; if batery tray reads T601 FCC#####1510 that transmits 29-30dBm/approx. 1000mw. A big difference in power. Range is 5KM as stated on the DJI website.
If battery tray the label reads:T600, FCC####1410, you have a T600-D that transmits 24dBm/approx. 255mw. This is a T600-D that was modified by adding the motor upgrade and new gimble plate. Transmitter was not upgraded! Range is 2KM! ; if batery tray reads T601 FCC#####1510 that transmits 29-30dBm/approx. 1000mw. A big difference in power. Range is 5KM as stated on the DJI website.