Polyphony and monophony in instruments harpejji and the Chapman stick). Multiphonics can be used with many regular wind instruments to produce two or more notes at once, although this is considered an extended technique. Explicitly polyphonic wind instruments are relatively rare, but do exist. The standard harmonica can easily produce several notes at once. Multichambered ocarinas are manufactured in a number of varieties, including double, triple, and quadruple ocarinas, which use multiple chambers to extend the ocarina's otherwise limited range, but also enable the musician to play more than one note simultaneously. Harmonic ocarinas are specifically designed for polyphony, and in these instruments the range
Owned-and-operated television stations in the United States on the weaker channel 6 signal under the same calls). "Note: Some stations were owned by Ion Media Networks under its former name Paxson Communications prior to the 1998 launch of Ion Television as Pax TV." Notes:<br> TBN has never sold one of its full-power television stations (either one it owns outright or through its Community Educational Television subsidiary), though several translator stations have been sold off since the digital transition to other parties for either spectrum speculation, to become translators of other commercial stations, or in the case of W41BN in Dothan, Alabama, to become an affiliate of one