Skyblue
- Experiment:
- Location: from Heard Island and McDonald Islands to the world
- Date recorded: January 1991
- Center frequency: 57 Hz
- Bandwidth: 11.4 Hz
- Symbol rate: R = 11.4 Hz
- Distance: varies, 5513 and 9192 km (Chrismas Island and Ascension Island)
- Tx/Rx/water depth: 175/?/?
- Mobility: mobile
- Receiving array: yes
- Parameters:
- Sampling rate in delay: 2R
- Total delay coverage: up to 25 seconds
- Sampling rate in time: R/100 for the channel response, 2R for the phase/delay
- Total time coverage: 1 hour

Acknowledgement
The Underwater Acoustic Channels Group gratefully acknowledges the contribution of the original Heard Island Feasibility Test team. For more information, please refer to the documentation page
here. The original link to download expired, but you may download all six CDs from
here.