Question
What is the length of an FT8 transmission cycle?
Answer Options
- A) It varies with the amount of data
- B) 8 seconds
- C) 15 seconds
- D) 30 seconds
Correct Answer: C
Explanation
FT8 is a synchronized digital mode that achieves its weak-signal performance through precise timing. The exchange of information is rigidly structured into fixed time slots, which is why accurate computer clock synchronization is vital for both transmitting and receiving stations.
The standard length of an FT8 transmission cycle is 15 seconds. Stations in a QSO strictly alternate between transmitting during one 15-second period and receiving during the next 15-second period. This rigid structure allows for the use of advanced digital signal processing techniques that average the signal over the entire period, enabling successful decoding of signals buried in the noise.
This topic was automatically created to facilitate community discussion about this exam question. Feel free to share study tips, memory tricks, or additional explanations!