Antennas designed to receive the wide array of North American television channels had to span many frequencies and were thus very large. Many of these frequencies have been abandoned, and so have the antennas that receive them. This broken-down example is typical of designs from the 1960s through the 1980s. It actually consists of two separate antennas, a Yagi-Uda at the front (right) that is designed to receive UHF channels 14 through 81, and a log-periodic antenna at the rear (right) designed to receive VHF channels 2 through 13. Both designs are linear, so they can be placed along a single boom.