What Use Is An F-call?

What use is an F-call? With the advance of the Internet into society in the past 20-odd years Amateur Radio has embraced the warm glow of electrons passing across copper, or light pulses across fibre, and radio waves across the ether that embodies our Internet today. One of the tools that a radio amateur might use is a thing called a DX Cluster. It's a place online where you'll find records of contacts that have been made between two stations. The time the contact took place, the date and of course the frequency. If we leave accuracy aside for a moment, since anyone and everyone can post a spot online without any form of serious authentication, we can never the less use this tool for some interesting purposes. The obvious one is to use a DX Cluster to see who's where on what band and see if you can hear them there too. You'll find that there is some limited success and some indications of where a station might be found. If you look regularly at a particular station, you may be able to figure out patterns