Ray McCarthy
Sentient Marmite: The Truth may make you fret.
The Japanese sank most of the Russian fleet, not just in Harbour. The Russians thought Radio would give away position, but there was only two routes, and Japanese used observers with radio in 1905 war to "plot" route of Russian Attack fleet.when they attacked the Russian fleet
Early Radio reporting too, as a US journalist was allowed to accompany Japanese in Chinese Junk, radio to mainland and messages forwarded to his US Paper by mix of telegraph and radio.
This was 16 years before Broadcast radio and only about 7 years after successful start of commercialisation of Wireless by Marconi and quickly others. Marconi didn't invent Wireless, he never claimed to either, his advance was the large wire up high (hence aerial) and the other in the ground (hence earth) rather than small portable loop on the earlier sets. He and others then added tuning which allowed multiple operators and greater efficiency.