This is the 17386th most frequent Russian word.
телеканалом
"Телеканалом" means "TV channel" in English.
Here, 'телеканалом' is used in the instrumental case, indicating the means by which the collaboration happens.
Я сотрудничаю с этим телеканалом уже несколько лет.
I have been collaborating with this television channel for several years.
In this sentence, 'телеканалом' again appears in the instrumental case, showing the agency or the entity performing the action.
Передача о культуре была подготовлена этим телеканалом.
The program about culture was produced by this television channel.
Unlike the first two examples, here 'телеканале' is in the prepositional case, indicating the location where the meeting occurred.