Cecil Moore wrote:
wrote:
Directory Reference Wikipedia continuous wave
A continuous wave or continuous waveform (CW) is an electromagnetic
wave of constant amplitude and frequency; and in mathematical analysis,
of infinite duration.

Thus, a continuous wave is incapable of conveying
any information.

Um, not quite:-) The very presence of the CW signal conveys SOME
information (e.q. the fact that something is out there generating it:-)

It's the turning on and off of the wave that conveys most of the USEFUL
information:-) Which makes CW communication a DIGITAL mode, by the way.

Harry

Harry Gross wrote:

Cecil Moore wrote:
Thus, a continuous wave is incapable of conveying
any information.

Um, not quite:-) The very presence of the CW signal conveys SOME
information (e.q. the fact that something is out there generating it:-)

"Information - an indication of the number of possible
choices of messages, expressible as the value of some
monotonic function of the number of choices."
--
73, Cecil http://www.w5dxp.com

In rec.radio.amateur.antenna Cecil Moore wrote:
Harry Gross wrote:

Cecil Moore wrote:
Thus, a continuous wave is incapable of conveying
any information.

Um, not quite:-) The very presence of the CW signal conveys SOME
information (e.q. the fact that something is out there generating it:-)

"Information - an indication of the number of possible
choices of messages, expressible as the value of some
monotonic function of the number of choices."
--
73, Cecil http://www.w5dxp.com

How about a DF to give the bearing to the transmitter?

See straws, grasping.

--
Jim Pennino

Remove .spam.sux to reply.

wrote:

In rec.radio.amateur.antenna Cecil Moore wrote:

Harry Gross wrote:

Cecil Moore wrote:

Thus, a continuous wave is incapable of conveying
any information.

Um, not quite:-) The very presence of the CW signal conveys SOME
information (e.q. the fact that something is out there generating it:-)


"Information - an indication of the number of possible
choices of messages, expressible as the value of some
monotonic function of the number of choices."
--
73, Cecil http://www.w5dxp.com


How about a DF to give the bearing to the transmitter?

See straws, grasping.


How about a carrier that confirms ALL OK.

Absence of carrier = Problem exists.

Dave wrote:
How about a carrier that confirms ALL OK.
Absence of carrier = Problem exists.

Absence of carrier is the opposite of
continuous wave. :-)
--
73, Cecil http://www.w5dxp.com

Cecil Moore wrote in
t:

Dave wrote:
How about a carrier that confirms ALL OK.
Absence of carrier = Problem exists.

Absence of carrier is the opposite of
continuous wave. :-)


And switching between the two with various patterns can convey a message.

Those with a brain and who aren't lazy can receive it, those that can't
should stay on CB.

SC