Many TVs and digital to analogue boxes (sometimes called DTAs) receive digital signals. These channels have sub-channels that use a dash "-" or a period "." like 4-2 and 56.2.
The "." or "-" is next to the 0.
Because these signals are fairly new, older model Tvs may not work with our code set. Current code set is V7 and V8 (your model Flipper is on the back).