All Questions
Tagged with cw morse-code
10 questions
7
votes
2
answers
291
views
What is an undulator (as used for CW)?
There are historical references to a device called an "undulator" used for CW reception circa before and during WWII.
What is an Undulator (as used for CW recording)? How did they work (...
- 13.6k
5
votes
1
answer
215
views
Hearing impairment and CW?
Do there currently exist profoundly deaf operators who operate CW? If so, how does one operate without being able to hear a sidetone?
If licensed in the U.S. before 2006, how did they pass the Morse ...
- 13.6k
6
votes
3
answers
1k
views
Transmitting Morse Code as Tone vs. Carrier
Normal CW is just carrier on/off; this means simple transmitters are possible. The BFO of the receiver is adjusted to give a tone in the speaker within the audio passband. Narrow band filtering is ...
- 479
4
votes
4
answers
248
views
Could keying cw with your mouth using a sip-n-puff be as efficient as doing it by hand?
I know Morse code is sometimes used by people with limited use of their hands to interact with their computer. One way is by using a straw connected to a pressure sensor, a so-called sip-n-puff or SNP....
- 379
12
votes
3
answers
965
views
What is the decimal in Morse Code?
The ITU's International Morse Code recommendation ITU-R M.1677-1 specifies a "Full stop (period)" as ".−.−.−", however it falls short of specifying a decimal point. Even the examples, though they ...
- 872
3
votes
1
answer
4k
views
Difference between Iambic keyer modes?
What is the difference between Iambic Keyer mode A and mode B? Are there any other popular keyer modes? Why would one choose one mode over the other?
If only one Iambic keyer mode is to be ...
- 13.6k
3
votes
1
answer
818
views
Where exactly is the Morse code character ";" defined?
I've seen that quite often in Morse code tables (for example here), under punctuation, a semicolon ";"character is listed.
However, the ITU-R M.1677-1 doesn't specify that character as a part of ...
- 2,942
12
votes
3
answers
3k
views
What is the origin, history behind "Ben's Best Bent Wire"?
Bens Best Bent Wire
My uncle, who was a Merchant Marine in WWII used to tell me this. He was a ham, and said it would develop my fist musically.
I was a small child at the time, and through his ...
- 171
4
votes
1
answer
4k
views
Morse code for hash (#)
Is there a morse code for a hash character? If so, what is that morse code? My thoughts where that there is morse code for an @ but why not for a #?
- 143
5
votes
3
answers
5k
views
How are capital letters sent in Morse code?
There is only one alphabet in Morse code, so is there a recognised way to indicate a capital letter?
- 533