I'm not super familiar with this so I could be totally misreading this, but assuming those are operating under part 15 the answer to whether they are guaranteed to continue working seems to be explicitly "no" under NextNav's proposal:
>NextNav does, however, seek the removal of the current requirement that it not cause unacceptable levels of interference to part 15 devices. See Petition at A-6 (proposing to amend § 90.361), A-11 (proposing to add § 90.1410(c)).
>NextNav does, however, seek the removal of the current requirement that it not cause unacceptable levels of interference to part 15 devices. See Petition at A-6 (proposing to amend § 90.361), A-11 (proposing to add § 90.1410(c)).