I'm working alongside Jinx and a couple of others to try and develop this train of thought.
We have a method which involves only 1 leap of faith at the end, so we really need 2-3 clean recordings of 6 minutes or so to double check the method.
Ah! Well speeding up the recording x10 of the 'UP on Merope 5C' you get the nice binary tuba notes. I think you've missed the initial 'low' right at the start and some masked by the load barps. I get the following sequence:
010110 100110 011001 001100 110011 011010 011001 010011 001101 1010