Synonymer & Information om | Engelska ordet UNMODULATED

An operator uses the telegraph key to send electrical pulses (or in the case of modern CW, unmodulated radio waves) of two different lengths: short pulses, called dots or dits, and longer pulses, called dashes or dahs.
Dead air, also known as unmodulated carrier, is an unintended period of silence that interrupts a broadcast during which no audio or video program material is transmitted.
In continuous wave (CW) radio transmission, also called radiotelegraphy, or wireless telegraphy (W/T) or on-off keying and designated by the International Telecommunication Union as emission type A1A, information is transmitted by pulses of unmodulated radio carrier wave which spell out text messages in Morse code.
However, the unmodulated signals produced by early continuous wave (also known as "undamped") transmitters like the Goldschmidt alternator were inaudible in receivers designed for reception of spark transmissions.
In contrast the new continuous wave transmitters produced a signal consisting of pulses of continuous waves, unmodulated sinusoidal carrier waves, which were inaudible in the earphones.

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