| 单词 | 218–219 MHz Service |
| 释义 | 218–219 MHz Service In the United States, a short distance, interactive licensed communications service for the transmission of information, product, and service offerings. The service is licensed in two blocks, with Block A operating in the 218.0–218.5 MHz band and Block B in the 218.5–219.0 MHz band. A system comprises one or more cell transmitter stations (CTSs) and response transmitter units (RTSs). Anticipated applications include ordering goods and services offered by television services, viewer polling, remote meter reading, vending machine inventory control, and cable television theft deterrence. The Federal Communications Commission (FCC) includes the service in the family of personal radio services.The service formerly was known as Interactive Video and Data Services (IVDS), although the bandwidth is insufficient for video transmission. See also bandwidth, FCC, and personal radio services. |
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