E2E - Operating Procedures
Extra Class
Digital operations: HF digital modes, networking, APRS, mesh networks
13 questions
Which of the following types of modulation is used for data emissions below 30 MHz?
Which of the following synchronizes WSJT-X digital mode transmit/receive timing?
To what does the "4" in FT4 refer?
Which of the following is characteristic of the FST4 mode?
Which of these digital modes does not support keyboard-to-keyboard operation?
What is the length of an FT8 transmission cycle?
How does Q65 differ from JT65?
Which of the following HF digital modes can be used to transfer binary files?
Which of the following HF digital modes uses variable-length character coding?
Which of these digital modes has the narrowest bandwidth?
What is the difference between direct FSK and audio FSK?
How do ALE stations establish contact?
Which of these digital modes has the highest data throughput under clear communication conditions?