Teletext

[old_tv_nut]

There were a few attempts at businesses based on Teletext. One was listing freight hauling jobs for independent truck owners. The idea was that teletext capable sets would be installed in large truck stops. WTBS did some experimental consumer stuff, but the audience was so small that the operator would be elated if they could get someone to call them to suggest what they would like to see on the service. WGN in Chicago broadcast teletext in cooperation with Zenith. They even had a page titled "Test for Gary," who was a Zenith engineer that worked on Teletext. It was filled with a string of alternating characters that generated the worst possible clock signal for decoding.