a LiPo rechargeable battery. An 900mAh battery weighs less than a 9V
alkaline battery, and will run a [TeleMetrum](../TeleMetrum) for hours.
-[ThisA document](InsertSheet.pdf) contains notes about how to install a
+[This document](InsertSheet.pdf) contains notes about how to install a
flight computer such as TeleMetrum in a rocket.
By default, we ship TeleMetrum with a simple wire antenna. If your