classification of contacts

[sonar732]

Originally Posted by Nexus7

I know that NB is not primarily used to assign trackers, but you can, and if you try to assign tracker to the second frequency of a contact when you already marked his first frequency, nothing happens, and i think that's because the computer knows that this contact already has a tracker.

Why would you want to assign more than one tracker on the same contact from the same detection mode? I can understand if you found him in the SA NB and assign a tracker there and then assign a TA NB tracker to a different frequency, but as I asked, why the same detection mode?