The Inter Range Instrumentation Group (IRIG) is the standards body of the Range Commanders Council (RCC). They publish a number of standards through the RCC Secretariat at White Sands Missile Range (WSMR). The best known IRIG standard is the IRIG Timecode standard used to timestamp video, film, telemetry, radar, and other data collected at test ranges. Time and Frequency stations using IRIG audio signalling are * BPM (time service) (China) * CHU (radio station) (Canada) and * WWV (radio station), WWVH (US).