On Dec 13, 12:28*pm, Ian Jackson
wrote:
In message
, RHF
writesOn Dec 13, 7:02*am, Dave wrote:
Ian Jackson wrote:
There are also a lot of morse decoder programs which take your receiver
audio output and display it as text. Even if you are getting quite good
at morse, and are pretty good at decoding it 'in your head', the display
of the text 'subtitles' provides an instant indication of how you are
doing. Some programs indicate the speed of the received morse, and I was
surprised that I now seem to be able to copy quite a lot at up to 20wpm.

I don't think there's a radio made that doesn't call it "CW". *The VBR
binary system invented by S. F. B. Morse for electric clicker DC wire
communications might resemble CW at first glance, but modern CW is quite
different.

What About ? Listening to Morse Code with a 'portable'
AM/FM Shortwave Radio using the SSB Feature ?

- Well, my Etón E5 certainly doesn't say 'CW'.
- It says 'SSB'.

For 'portable' AM/FM Shortwave Radios that have
SSB as a listening feature : Most likely the SSB
Setting switches-in a Narrower Filter say 2.8 kHz
versus the AM Filter of 5~6 kHz.

So you can hear the CW Morse Code Signal more
distinctly and clearer in the SSB Mode. But -if-
you have a tightly packed Band with many CW
Transmissions crammed into your 2.8 kHz SSB
Filter's Bandwidth you will be hearing two, three
or more CW Transmission all at once. That is
why Shortwave (HF) Radio Listeners who like to
listen-in-on Amateur {Ham} Radio Operators CW
Transmissions usually get a Communications
Receiver with CW Filter or Spots for Extra/Optional
CW Filters for Listening to CW Transmissions
* Some common CW Filter Sizes [kHz] are :
500 Hz . . . 375 Hz . . . 250 Hz which are much
Narrower than the 2.8 kHz of most portable
AM/FM Shortwave Radios.

- Does this mean I can't receive CW?

No. -but- You may not be able to narrow-in on a specific
CW signal in a crowded band with a Radio-Receiver that
has Narrower CW Filters like 500 Hz.

- Just what HAVE I been listening to while sitting on the toilet?

Noise coming out of the Radio ;-}

- - CW is the "Mode" of Transmission {Signal}
- - * CW = Continuous Wave
http://en.wikipedia.org/wiki/Continuous_Wave

- - Morse Code is the "Method" of Transmission {Information}
- - * Structured Organized Bits of Continuous Wave
http://en.wikipedia.org/wiki/Morse_Code

Oh dear. My old Trio TS520s DOES say CW. Pity. I was hoping to use it
for SSB and morse. What AM I going to do?
--
Ian