Amateur Extra › E2 Operating Procedures › E2B12
E2B12
What signals SSTV receiving software to begin a new picture line?
Pick an answer to check it.
Answer: A. Specific tone frequencies
SSTV uses specific sync tone frequencies (such as 1200 Hz) to tell the receiving software to start a new line. Everything in SSTV is coded by tone frequency, not amplitude.
Tip: SSTV sync is a special tone frequency.