Note: The carrier may continue unmodulated or it may be modulated by another signal source.
Also, off-the-air may be synonymous with over-the-air or from-the-air, as in picking up a terrestrial broadcast TV station off-the-air instead of from cable TV. As this usage may be confusing due to the term's other meanings, the terms "over the air" or "on the air" are more standard in the broadcasting industry.
Just in case you were wondering: for your consumption and perusal, more probing questions from PME readers.(Fire Protection)(Interview)
May 01, 2007; Q: All building codes have adopted some form of energy code. The UBC, for instance, adopted the Model Energy Code, which goes...