Re: Cyril L. Baker
"In 1914 the sea-going equipment was still simple, but the system was practical, reliable, trusted and would soon be battle tested. Most of the equipment was still based around spark transmitters and crystal sets using the Low frequency and Medium frequency bands, but the Royal Navy already had 15 years experience and had developed tactics and operations based around it use."
Quote from
http://marconiheritage.org/ww1-sea.html
Spark transmitter = pulse of em energy with a wide frequency spread & so hard to coordinate among a fleet of ships (basically turns taking) or did they have tuned circuits in the antenna to filter out some of the energy? Raining tomorrow so I'll be researching.