| 11. | WLPI-AM ceased operations in 1974 after maintenance problems developed with the carrier current equipment.
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| 12. | In 1952, students at North Dakota Agricultural College signed on KDSC, a carrier current station.
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| 13. | At this time the carrier current station adopted the new callsign WRCN, and programming was divided.
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| 14. | It started as KDLX in 1960 as a carrier current station and broadcast only in Northwest buildings.
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| 15. | It used carrier current AM in order to broadcast to the University's dorms and union building.
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| 16. | WBAU was originally called WALI, and broadcast entirely through carrier current at 640 on the AM dial.
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| 17. | The students launched the experimental radio station to study carrier currents, the subject of their thesis paper.
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| 18. | WVCW continued on carrier current AM at both 850 AM and later 640 AM until the early 2000s.
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| 19. | The management of WDBS did not want to be left behind with its now-outdated carrier current system.
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| 20. | Transmitters that use carrier current are very simple, making them an effective option for students interested in radio.
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