2. Analyzing The Signal

Having a look at the audio recording of the signal yields the following image, included in this packet is transmitter ID, pressure, battery level, and a checksum.

A short pause following a burst is a 0 and a long pause following a burst is a 1.

Here is an example packet followed by a breakdown of each part, including how it is encoded. This info is the culmination of lots of trial and error and experiments.