CPAPortal.com

  The reason some businesses are hesitant to advertise on radio is that after buying the adverts they rarely actually get to hear them on air. Many stations will sell radio ads on an ROS (Run on Schedule) or BTA (Best Time Available) basis. This basically means catching the adverts is more a matter of [...]

  A TV ad gets a business ample exposure it needs to keep going. But you cannot tell whether the hundreds or so seeing your business advert are curious enough to want to know more. Your prospective customers are likely to be more if you center your adverts on just a select number of stations. [...]