A cathode ray tube display for showing moving pictures with sound. Even on the rimworlds, there is often an old transmitter running something at least marginally interesting.
A tube television is a television that can be built by colonists with a construction skill of 7 or higher. Effective in a 3x5 area in front of the object, spaced 1 tile away from it.
The tube television has an entertainment strength factor of 120%.
But, because of it's small size it is a great television to place infront of beds in hospitals where space might be limited.