#### mlrtime99

##### Well-Known Member

And I was hoping to get something a little more precise with my GPS BRB900 - View attachment 121716k675.kml but as expected there's GPS blackout from launch until near apogee. I threw the data into excel and found the largest delta and divided by time and end up with 2367m/12s or 197.25m/s but 12 seconds is and awfully large timespan to average data across. The 1132ft/s from the RRC3 just seems too high and the calculated 647ft/s too "average".

Anyone see any other way of getting more accurate data from these two sources?