This is the 3355th most frequent Turkish word.
kanalda
"On the channel" or "in the channel."
Here, 'kanalda' refers to a specific television channel as a medium of broadcasting.
Televizyonda hangi kanalda olduğunu bilmiyorum.
I don't know which channel it is on the television.
In this case, 'kanalda' means 'in the canal' and describes a physical water channel.
Tatildeyken kanalda balık tuttuk.
We fished in the canal during the vacation.
Here, 'kanalda' once again refers to a broadcast medium but specifies it as being related to publishing a program.