41 is Wairapa TV so your TV might have just picked up the placeholder as there is no broadcast from Waiatarua

39 is Southern TV and again isn't broadcast from Waiatarua

Not sure about CH800

openmedia:

 

41 is Wairapa TV so your TV might have just picked up the placeholder as there is no broadcast from Waiatarua

 

39 is Southern TV and again isn't broadcast from Waiatarua

 

Not sure about CH800

 

800 says Southern TV.  These have never shown up before, don't know why they would if there is no broadcast, unless they are widening their broadcast regions?

They are normally broadcast as a channel ID only - no actual streams.  Most devices will pick this up correctly as meaning that they are not valid channels, but if you set options like "tune everything" they might become visible.  I just ran a scan from Wharite and I am not seeing any changes.

These have shown up again tonight.