What telemetry information is typically transmitted by satellite beacons?

Amateur radio satellites often transmit a beacon signal that serves two primary purposes: allowing stations to locate the satellite's signal and transmitting vital telemetry data. Telemetry refers to the automatic measurement and transmission of data from remote sources. In the context of a satellite, this telemetry provides the ground control station and amateur operators with the "health and status" of the spacecraft. This includes critical measurements such as battery voltage, solar panel current, internal temperatures, and the operational state of various onboard systems. Options like the signal strength of received signals or a highly accurate time of day are not the primary purposes of satellite telemetry beacons. Tracking the health of the satellite allows operators to manage its power usage and ensure its longevity in orbit.