From the HF 6577/5550 archives, but the receivers were tuned to 3455/5550 at the time. Air Force One coming home over the Atlantic from the Mandela memorial in the wee hours of Dec 11th, 2013. At a few minutes past 0800Z New York ARINC attempts a voice call and three Selcals with no response, then a half hour later (after the short 600hz tone in the recording) you hear AF1's antenna tuner followed by the voice check-in and Selcal check.