on both off my bt boxs i got 139 channels but on my now tv box i got 168 channels on free to air so i got all the channels so wy can i just get 139 chonnels and not all the channels like i got on my noew tv box and i am on th same arrel
I'd suspect that your signal strength on the YV box is perhaps a little low.
I reduced my signal strength when re-tuning recently to block out another region and when I went too far I was getting about the same number of channels as you instead of over 160.
after all this time i retune my 400 bt boxs today and i got all my channels back with the same aerial but not on the 2100 bt boxs in the bedroom .
Compare the signal strengths on the 2 units, maybe the T2100 is losing more of the signal than the T4000.
Also atmospheric conditions can have more of an impact where the signal strength is lower than desirable.