In the same frequency with OTP-2, we may have some signals from M-SEL/CORTEZ:
https://network.satnogs.org/observations/?future=0&good=1&bad=0&unknown=0&failed=0&norad=98622
In the above observations there are some wide ones that looks different from the strong short ones of OTP-2
PS However these signals, there is a chance to be Sphinx satellite. Let’s keep tracking to discover it.