Yes! Speed camera vans in New Zealand operate on K band, but are often virtually invisible to other radar detectors either because of a recent change in frequencies here.
Another challenge with speed camera vans in New Zealand is caused by the way the camera angle is set up in relation to the road and traffic. This means that most radar detectors just don’t pick up enough signal to determine it could be even a false alert let alone an actual threat until you’re virtually past the camera.
A Stinger VIP or Stinger Card does it so much better. The system will analyse the little bit of signal it does detect, it does it faster and more accurately, and will decide if what it’s detecting is most likely a camera threat, or a false alert.