Joseph Henry was born 17 December 1797 in Albany, NY. They were so poor he was not able to attend the Albany Academy until he was 21 years old. He did ok, becoming the first secretary of the Smithsonian. He did technical work in electromagnetism, and contributed to the development of the telegraph. His relationship with Samuel Morse would sour because Morse was assisted by Dr. Leonard Gale who relied on Henry’s work to improve the design. That’s a long way of saying this quiz topic is CW!

Reference: https://siarchives.si.edu/history/joseph-henry

T8A11 What is the approximate bandwidth required to transmit a CW signal?

A. 2.4 kHz

B. 150 Hz

C. 1000 Hz

D. 15 kHz

G2C02 What should you do if a CW station sends “QRS?”

A. Send slower

B. Change frequency

C. Increase your power

D. Repeat everything twice

E8C12 What factors affect the bandwidth of a transmitted CW signal?

A. IF bandwidth and Q

B. Modulation index and output power

C. Keying speed and shape factor (rise and fall time)

D. All these choices are correct

Answers:

T8A11 = B

G2C02 = A

E8C12 = C