Talk:Continuous wave
From Wikipedia, the free encyclopedia
 |
This article is supported by the Radio WikiProject.
This project provides a central approach to Radio-related subjects on Wikipedia. |
|
| Start | This article has been rated as Start-Class on the Project's quality scale. (If you rated the article please give a short summary at comments to explain the ratings and/or to identify the strengths and weaknesses.) |
|
 |
This article is within the scope of WikiProject Amateur radio, which collaborates on articles related to amateur radio technology, organizations, and activities. If you would like to participate, you can edit the article attached to this page, or visit the project page, where you can join the project and/or contribute to the discussion. |
| Start | This article has been rated as Start-class on the quality scale. |
| High | This article has been rated as High-importance on the importance scale. |
 |
This article is within the scope of WikiProject Physics, which collaborates on articles related to physics. |
| Start | This article has been rated as Start-Class on the assessment scale. |
| ??? | This article has not yet received an importance rating within physics. |
|
Help with this template This article has been rated but has no comments. If appropriate, please review the article and leave comments here to identify the strengths and weaknesses of the article and what work it will need. |
|
This creates an interesting situation: CW is a redirect for Morse code. And yet, there is certainly a distinction between Morse code, which can be transmitted by means other than CW, and "Continuous wave". But, in the real world, Morse code has only been used, to any significant extent, by way of CW for many years. So the two have really come to be somewhat synonymous. I'd be inclined to merge the two under Morse code with an explanation of the problem. Most of what I have to say about CW, I'd be inclined to say in the Morse code article, probably because that's where most of it already is. Bill 11:56, 8 Aug 2003 (UTC)
Well, CW was a redirect for Morse until a few minutes ago. Bill 11:58, 8 Aug 2003 (UTC)
It would be better instead to link other uses of continuous wave to support the distinction. Waveguy 01:40, 10 Aug 2003 (UTC)
The only use of CW I know of is to send Morse code by way of radio. Historically, Morse code has been used in media other than CW, but this is addressed in the Morse code article. Unlike most forms of radio transmission, CW in unmodulated. That is, it is a pure carrier in which no intelligence has been encoded. -- Bill 12:36, 10 Aug 2003 (UTC)
-
- This has been here for years but it's not correct; on-off keying is a form of modulation by definition! And, pedantically, you might say ICW for "Interrupted continuous wave" but anyone who uses the term "CW" understands that; a continous wave is a mathematical fiction, anyway. --Wtshymanski 02:09, 9 May 2005 (UTC)
Feld-Hellschreiber is also a CW mode. It uses (in its basic form) on off keying to represent characters, though anti-aliasing can be done by changing the level of the carrier... Jdos2 18:58, 15 August 2006 (UTC)
This article should point out that the phrase "continuous wave" and its abbreviation "CW", are mainly used in the context of amateur radio as a misnomer for Morse code. Originally the phrase "continuous wave" was used to mean "not spark", i.e. not periodically damped. Now the original meaning of the phrase has been lost, and "continuous wave" has come to mean Morse code. In my opinion, any modern amateur radio mode could be called "continuous wave", because the wave is not periodically damped. Again in my opinion, the leading paragraph of the article, the one that defines continuous wave as an electromagnetic wave of continuous amplitude and frequency that is assumed to be switched, is merely attempting to cover up the misnomer. Unfortunately I have no sources to back me up at this time. Apparently neither does the article's original author. Rclocher3 22:51, 13 April 2007 (UTC)
- This isn't the Académie française, Wikipedia doesn't dictate what *should* be the usage, just records the way terms are actually used. When talking about "CW", radio people mean "ICW" sending Morse (or other forms of radio teletype) - and laser people mean a laser that runs as long as it's switched on. Context is critical in English, which is why machine translations so often fail. I think the article is reasonably honest in the way it uses the terms. --Wtshymanski 01:27, 14 April 2007 (UTC)
[edit] WikiProject class rating
This article was automatically assessed because at least one WikiProject had rated the article as start, and the rating on other projects was brought up to start class. BetacommandBot 09:46, 10 November 2007 (UTC)
