Midwest Program on Airborne Television Instruction
| Company type | Nonprofit |
|---|---|
| Industry | Educational broadcasting |
| Founded | 1960 |
| Defunct | 1968 |
| Headquarters | West Lafayette , United States |
Area served | Midwest United States |
| Products | Instructional television programming |
The Midwest Program on Airborne Television Instruction (MPATI) was an innovative educational broadcasting project designed to deliver instructional television content to schools, especially in areas where local educational stations were unavailable. Between 1961 and 1968, MPATI operated two DC-6AB aircraft stationed at Purdue University Airport in West Lafayette, Indiana, employing a broadcasting technique known as Stratovision to disseminate programming.
History
Initiated in 1960 as a three-year pilot program funded by the Ford Foundation, MPATI aimed to coordinate, produce, and transmit educational television for public schools throughout the Midwest. This nonprofit alliance of educators and media producers was a pioneer in educational television prior to the advent of satellite broadcasting. By 1963, MPATI had become financially dependent solely on membership dues but faced fiscal challenges due to limited enrollment from schools. Unable to maintain operations through fees alone, the organization halted its production and transmission activities in 1968 and subsequently converted its resources into a tape library.
Typically, one aircraft would remain airborne for six to eight hours, following a 20-minute figure-eight flight path over Montpelier, Indiana at an altitude of 23,000 feet. This flight pattern enabled coverage within approximately a 200-mile radius, reaching major urban centers such as Chicago and Detroit. While in flight, the plane reduced its speed and extended a 40-foot gyroscopically stabilized antenna mast designed to preserve signal polarization and enhance broadcast reliability. Ground-based reception was improved by positioning antennas close to the earth’s surface and orienting them toward Montpelier to minimize signal disruption.
The programming was delivered as pre-recorded material, including instructional videos, test patterns, and musical segments. Nevertheless, reception quality was frequently compromised due to the low power of transmitters operating on UHF channels 72 and 76 (KS2XGA and KS2XGD).
The television transmission equipment aboard the aircraft was powered by a gas-turbine electrical generator installed in the rear section of the DC-6. This system functioned similarly to auxiliary power units found in subsequent jet aircraft designs.
External links
- Midwest Program on Airborne Television Instruction (MPATI) records – Special Collections and University Archives, University of Maryland
- Chicagotelevision.com: "MPATI: The Flying Classroom"
- "Flying Classrooms in the Midwest"