First conclusion of a series that began after Earth Day and includes Fossil Fuels and a Walk on the Moon, Drill Baby Drill or Drill Baby Oops, Magnitude, Part 1, One Month After, The Chernobyl of Fossil Fuel?, and Magnitude, Part 2. ) As I wrote on Earth Day, “In 100 years our descendants will [...]
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The same messages can be communicated by signalling the letter "K" in Morse code via signal lamp. (While a proper signal lamp may be ideal, a flashlight, probably best employing red LEDs, will certainly fit the bill).
In Morse, the letter "K" is represent as Dash - Dot -- Dash.
The ICS also has a subset, the Medical Signal Code, which uses three-character phrases to communicate brief medical messages.