Hi, I am an avid HF listener and often track flights from leaving UK airspace on VHF and SBS-1. Once out of radio range on VHF I then listen to them make contact with 'Shannon' control on my 2 Icom 71E HF receivers!
One of the terms I do not understand and cannot find anywhere is "C P T L C" spoken normal and not phonetically! I may have those letters mixed up but I don't think so
Any crew or tin pushers shed any light?
Regards, Steve