Wesley,
My basic question remains. If you don’t want to RX any packets from the network, why is your mDot in Class C mode?
Class C mode is specifically for use cases where the mDot needs to RX packets outside the regular RX windows. If you don’t need that functionality, you don’t need to be in Class C mode.
I think you’ll have better luck with Class A mode as it is much more compatible with what you’re trying to do.
Cheers,
Mike