A recording from 1987 is being used to keep fog horns alive. This recording is associated with San Francisco's fog horns. The details of how the recording is used and its significance are not fully known from the available information.

Further details about the 1987 recording and its role in preserving the fog horns can be found through KALW. The recording's connection to San Francisco's fog horns suggests it may have historical or cultural importance.

The full story behind the recording and its use is available from the source, which may provide additional context and insights into the preservation of the fog horns.