"Frank" wrote in message
news:01c386e0$9a92e3e0$0125250a@yludnifduhzssbbv.. .
... [SNIP]
Another advantage of Morse code is that several conversations can
simultaneously exist on a single frequency. Each station uses a tone
different enough to be distinguished by ear and an experienced operator
can
mentally filter out all but the tone he's copying.

This is not true.

If the "tone" is different at all, then the carrier is on a different
frequency.

Two (or more) CW transmissions on the same frequency will have the identical
"tone".

You can fit CW transmissions very close together, but not on the same
"single frequency".

Budgie wrote:
This is not true.

If the "tone" is different at all, then the carrier is on a different
frequency.

Two (or more) CW transmissions on the same frequency will have the identical
"tone".

You can fit CW transmissions very close together, but not on the same
"single frequency".


If it's code, it's not on a single frequency in the first place. Not only
theorically! Listen to code through a 10Hz filter and it's nearly uncopyiable.

The audio effect is that the filter rings as loudly as the signal. But it's
actually a mathematical effect. You're cutting out too much of the bandwidth
that the code actually occupies.
--
Ron Hardin


On the internet, nobody knows you're a jerk.

^ Budgie wrote:
^ If the "tone" is different at all, then the carrier is on
^ a different frequency.

OK, I was under the impression that a tone was transmitter on the carrier and
that the tone could be adjusted. But that would be modulation.


Ron Hardin ...
^ If it's code, it's not on a single frequency in the first place.

A single freq is not possible. You're only picking on words. "A single
frequency" always implies the frequency that the signal is centered on.

Another advantage is that CW has a narrower bandwidth than any voice
modulated signal.

Frank