I didn't realize there was 5 pages of posts to this thread. I found that I had to measure bit periods in the back around to stay in synced of to the data. I'm kinda new to Ardunio but been using the AVR and AVR Assembler for some time. How exact do you think the Ardunio is as a encoder? I can set off a weather radio every time with the ATMega and the XR2206. The first encoder I made uses the AT90S2313 I guess that is like 8 years old now. They sure picked a odd ball way of sending the data.