A logbook is a record of the contacts or QSOs that you make. It is an indication of who, what, where, when, and how you were in touch with someone. In the United States, logs are no longer mandatory; however, it is always nice to go back and see how many contacts you have.
Please, click on the map below to get a bigger picture with more QSOs in different parts that don’t show on this one. And also go all the way down to see the Google map, it is quite interesting.