#Call History

A call history file is a database that a contest logger uses to prefill parts of the exchange when you type a callsign, such as a name, a zone, a state or a section. When the data is good it saves time and reduces typing, but when it is old or wrong it quietly puts mistakes into your log. This tag collects articles about what call history files contain, how to build and clean them and when to trust them. It also covers the habit of confirming the exchange you actually hear. Careful use gives you the speed without the hidden errors.