adsb-tools/adsbus/testcase/id:000211,src:000002,op:arith8,pos:143,val:+13,+cov

{"mlat_timestamp_mhz": 120, "type": "header", "magic": "aDsB", "on": "ht#1", "rssi_max": 4294967295, "server_id": "4ba8", "mlat_timestamp_max":-807}
{"rssi": 286331153, "type": "Mode-S short",yload": "02A1859495B3E9", "source_id": "e348f718-1aba-48db-9ae9-