If you are sitting on the HF-GCS freqs monitoring EAM traffic streams this afternoon, you have probably heard quite a few passed. I can confirm that the 28 character OQ traffic streams are NOT real world. Earlier heard Turbo 70 ask Andy on 11175 kHz what the current 6 character training message was. Andy passed OQCPEF. At 1900 UTC Andy passed that preamble and the rest of the message as a 28c EAM.
So the current OQ 28c messages are not real world. Can't tell you anything about the 36/48c AE EAM streams.