This is an old revision of this page, as edited by Gaius Cornelius (talk | contribs) at 19:24, 31 March 2008 (Tidy using AWB). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
Revision as of 19:24, 31 March 2008 by Gaius Cornelius (talk | contribs) (Tidy using AWB)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)| Passband modulation |
|---|
 |
| Analog modulation |
| Digital modulation |
| Hierarchical modulation |
| Spread spectrum |
| See also |
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 inefficient use of radio spectrum.
See also
References
- "Amateur Radio Service Definitions (47 CFR §97.3)".
{{cite web}}: Unknown parameter|accessmonthday=ignored (help); Unknown parameter|accessyear=ignored (|access-date=suggested) (help)
- "Ham Radio Jargon, Abbreviations and Terminology".
{{cite web}}: Unknown parameter|accessmonthday=ignored (help); Unknown parameter|accessyear=ignored (|access-date=suggested) (help)
| International Morse code | |
|---|---|
| Transmission methods | |
| Notable signals | |
| Other writing systems in Morse code | |
 | This article related to amateur radio is a stub. You can help Misplaced Pages by expanding it. |