Teardown Tuesday.
Inside a Polar Wearlink chest strap fitness heart rate monitor monitor transmitter.
Also a look at and some attempted decoding of the signal with the Tektronix MDO3000 oscilloscope.

Polar RMCM-01 Receiver Module Datasheet: https://www.sparkfun.com/datasheets/Wireless/General/RMCM01.pdf

Forum: http://www.eevblog.com/forum/blog/eevblog-665-polar-wearlink-heart-rate-transmitter-teardown/

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