ARRL Technician Practice Exam 2025 – Complete Prep Guide

The definition of telemetry according to FCC Part 97 refers specifically to a one-way transmission of measurements that are collected from a remote location or an unattended system. In this context, telemetry is often used in amateur radio to send data related to the status or condition of a device, such as environmental data, equipment performance metrics, or other specific measurements.

This one-way nature of telemetry distinguishes it from two-way communication modes like voice or digital modes that involve active interaction between two parties. The focus is on transmitting collected data for monitoring or analysis purposes without necessitating an immediate response from the receiver. Telemetry is valuable in various applications, including remote weather stations and satellite communications, where real-time feedback isn't possible, and it suffices to send data at periodic intervals.

Understanding this definition aligns with the practical use of telemetry in amateur radio and reinforces the importance of distinguishing between different modes of communication as outlined in FCC regulations.