All Questions
5 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There are historical references to a device called an "undulator" used for CW reception circa before and during WWII.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
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
9
votes
5
answers
3k
views
Why do some straight keys have a slider that shorts the contacts continuously?
I ended up with an old straight key that has a curious feature: below the main arm that you would tap on, there's an extra metal flange that can sort of loosely pinch an extra sliding lever underneath,...
- 7,469
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
10
votes
3
answers
7k
views
What is the record for the highest non-automated over-the-air CW WPM speed?
Related to this question, but using humans, and in an actual QSO, not lab conditions:
Is there a record for QSO QRQ speed? And, if so, what is the record for the highest non-automated over-the-air ...
- 13.6k