Satcom Piracy
Last night I witnessed the HELL mode of communication being used by the pro-Ukraine satellite pirates on 245 MHz. The words read better when the waterfall scrolls up the page, so flipping the image makes it more readable! There was a variety of English and Cyrillic messages which were anti-Putin in nature.
Hellschreiber mode as a communications tool has been around since 1929 when it was invented by Rudolf Hell in Kiel (Germany).