Where do you find information about clocking systems used for pigeon racing?

The primary source of information about clocking systems used for pigeon racing is the Federation Colombophile Internationale (FCI). The FCI is the international governing body for pigeon racing and sets the standards for clocking systems used in competitions. The FCI website contains information about the different types of clocking systems, how they work, and the rules and regulations governing their use.

Another source of information about pigeon racing clocking systems is the national pigeon racing federations in different countries. These federations often have their own websites and publications that contain information about the clocking systems used in their respective countries.

Finally, there are several magazines and websites dedicated to pigeon racing that may also contain information about clocking systems. These publications can provide insights and tips from experienced pigeon racers and experts in the field.