CHU – 7850 kHz

At about 0831 UTC on Thursday, 31st July 2025, I tuned in to CHU time signal station, CANADA, transmitting on 7850 kHz.

CHU is the call sign of a shortwave time signal radio station operated by the Institute for National Measurement Standards of the National Research Council, in Ottawa, Ontario, Canada.  (Wikipedia 2023)

Three frequencies are used: 3330, 7850, and 14670 kHz.

The station commenced in 1923 with a callsign of 9CC and was used on an experimental basis until 1928.  In January 1929, regular daytime transmissions commenced under the callsign of VE9OB on 7353 kHz.  At the end of 1929, continuous transmissions commenced on the 90m band.  The station’s callsign was changed to CHU in 1938.  (Wikipedia 2023)

Below is a short video of my reception of CHU.

References.

  1. Council, R. (2019). NRC shortwave station broadcasts (CHU) – National Research Council Canada. [online] Canada.ca. Available at: https://nrc.canada.ca/en/certifications-evaluations-standards/canadas-official-time/nrc-shortwave-station-broadcasts-chu [Accessed 2 Aug. 2025].
  2. ‌Wikipedia Contributors (2025). CHU (radio station). Wikipedia.‌

Rescue Co-Ordination Centre Australia – 16420 kHz

At about 0745 UTC on Thursday, 31st July 2025, I tuned in to the Rescue Coordination Centre Australia (RCC), transmitting on 16420 kHz.

The RCC is based in Canberra, ACT and is a 24-hour operation which is responsible for coordinating all maritime and aviation Search and Rescue operations spanning the Indian, Pacific and Southern Oceans.

Below is a short video of my reception of RCC Australia.

New Zealand VOLMET – 13282 kHz

At about 0720 UTC on Thursday, 31st July 2025, I tuned in to New Zealand VOLMET, transmitting on 13282 kHz.

VOLMET, derived from the French words vol (flight) and météo (weather), is a worldwide system that broadcasts weather information to aircraft in flight.

Below is a short video of my reception of New Zealand VOLMET.