I’ve been using the AllMedHi-Viz Rescue Vest for a few weeks. Happy to recommend it – worth every penny – although for CERT and other purposes I’d like to see a lower bulk price. For the record, we weren’t given a review sample – and regard this as money well spent. And I intend to [...]
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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.