Off-air data from AO-40 via the ADC
-----------------------------------
3 complete cycles of < leader / A-blk / FEC / trailer > logged directly
from the ADC.  Data is error free, and almost noise-free.

This is ready for processing by a differential decoder, and thence by standard telemetry processing or Viterbi/RS processing.

2003 Jun 30 [Mon] 1312 utc