Assertion: tv's channel | /r/HasProperty | changed
Facets:
Source sentences:
text: The half wave dipole has a low gain of about 2.14 dBi; this means it is not as directional and sensitive to distant stations as a large rooftop antenna, but its wide angle reception pattern may allow it to receive several stations located in different directions without requiring readjustment when the channel is changed.
text: Among other things, the color burst phase would often drift when channels were changed, which is why NTSC televisions were equipped with a tint control.