| Author |
Message |
    
guest
| | Posted on Tuesday, July 29, 2003 - 1:40 am: | 
|
On my radio what does cw mean it is listed with am/fm/ etc. |
Ironmask
| | Posted on Tuesday, July 29, 2003 - 6:37 am: |
|
quest
CW stands for constant wave! It is used to send and receive code. Hope this helps. |
bruce
| | Posted on Tuesday, July 29, 2003 - 7:49 am: |
|
The history is that continues wave replaced spark in the 30's as a means to transmitt code The term comes from the fact that a cw osc puts out sine wave rather than randum noise pules that a spark gap uses and could be confinded to narrow bandwidth. If you distort the output the bandwidth goes up .....you splatter over other frequencys ...and because of this fact the FCC outlawed spark in the 1930's and standards were set for signal qualty....just some more background
http://www.arrl.org/tis/info/history.html#ham |
Bruce
| | Posted on Tuesday, September 02, 2003 - 11:33 pm: |
|
This should make codemans day !
|
Bluesman
| | Posted on Wednesday, September 03, 2003 - 8:46 am: |
|
Actually IMO the term CW is a misnomer. If you think about it a continuous (definition, 1 : marked by uninterrupted extension in space, time, or sequence),wave can send no information as such. It really should be ICW (interrupted continuous wave).
De Bluesman |
Codeman
| | Posted on Wednesday, September 03, 2003 - 9:21 pm: |
|
THANKS BRUCE. |
|
