References
6 jun 2011 Announcement of RX and TX Modules: https://mail.google.com/mail/?hl=en&shva=1#search/sv1eia/13064310b6dfe71f
W7 Issues:
8 Jul 2011 https://mail.google.com/mail/?hl=en&shva=1#search/sv1eia/1310b11112ec4b39
8 jul more https://mail.google.com/mail/?hl=en&shva=1#search/sv1eia/1310b11940f954e3
27 jun 2011 RF Feedback precautions: https://mail.google.com/mail/?hl=en&shva=1#search/sv1eia/130d1ff8a7d6a4e3
21 JUN I2c Considerations https://mail.google.com/mail/?hl=en&shva=1#search/sv1eia/1310b114dd3f41c6