thanks for the response
Default model name is MDL on the transmitter (in the supplied manual it's GT5A).
Is yours Flysky or Turnigy branded?
I've been back to some review videos and spotted a couple with Turnigy branded GT5's that have 3 character names. Didn't spot it before as wasn't looking for it. It's annoying that even the manual that came with it says 4 characters but suppose I can live with that.
Going to have to spend some time going through all the other features/functions to see what else might be different.
I should have specified, mine is a FlySky branded model. It sounds like you've found that the Turnigy one is different. Hopefully the character limit is the only other difference :\