Answer
$$Yes$$
---
Assuming that the boundaries of the channel numbers are known, yes the
operation is unambiguous an well defined. There are two parts in the
operation, entering the channel number AND pressing the button CHAN.
since both of the parts are unambiguous, the operation is unambiguous.
Work Step by Step
$$Yes$$
---
Assuming that the boundaries of the channel numbers are known, yes the
operation is unambiguous an well defined. There are two parts in the
operation, entering the channel number AND pressing the button CHAN.
since both of the parts are unambiguous, the operation is unambiguous.