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Revision as of 18:33, 14 June 2006
Summary
Modulated continuous wave is defined by the Federal Communications Commission in 47 CFR §97.3(c)(4) as "Tone-modulated international Morse code telegraphy emissions having designators with A, C, D, F, G, H or R as the first symbol; 2 as the second symbol; A or B as the third symbol."
Simply put, MCW uses a fixed audio tone to modulate a carrier wave. This is an older method of sending Morse code, with continuous wave being the more common method used today. MCW is not allowed in the United States on amateur radio frequencies lower than 50 MHz, as it is a very ineffecient use of radio spectrum.
See also
References
- "Amateur Radio Service Definitions (47 CFR §97.3)". Retrieved August 03.
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- "Ham Radio Jargon, Abbreviations and Terminology". Retrieved August 03.
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