ISS: Information Sending Station
IRS: Information Receiving Station
A CQ frame for sending a broadcast like CQ, so other station can send my messages and data if they hear me
| frametype | ISS callsign | ISS gridsquare | empty |
|---|---|---|---|
| 1 Byte | 6Bytes | 6 Bytes | - |
| 200 | Callsign as str | Gridsquare as str | - |