/members-area/personalblogs/b/gough-lui-s-blog/posts/433mhz-reverse-engineering-part-2---burning-questions-are-answeredI couldn&#39;t help but wonder, based on the previous posting and the discussion, exactly how did the 1 million combinations come about? Also, what are the functions of the fixed bits? Are they fixed pre-amble as my experience would suggest? Are there moen-USTelligent Community 12https://community.element14.com/members-area/personalblogs/b/gough-lui-s-blog/posts/433mhz-reverse-engineering-part-2---burning-questions-are-answeredWed, 13 Apr 2016 10:01:24 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:610259a0-f6ae-4960-ae84-2ae5ea060cf2Gough Lui1<p><span>[mention:8fb233e8974445138ef0af2b63b49f94:e9ed411860ed4f2ba0265705b8793d05]</span>, as usual, I have to thank you for your spreadsheet that put these thoughts into my head and made me try and find out what the fixed bits actually mean.</p><img src="https://community.element14.com/aggbug?PostID=21632&AppID=316&AppType=Weblog&ContentType=0" width="1" height="1">