Amateur Extra › E2 Operating Procedures › E2B11
E2B11
What is the function of the vertical interval signaling (VIS) code sent as part of an SSTV transmission?
Pick an answer to check it.
Answer: B. To identify the SSTV mode being used
The VIS code at the start of an SSTV transmission tells the receiving software which SSTV mode is being used, so it can decode automatically. It does not carry the call sign.
Tip: VIS = Which mode Is Sent.