Murky stuff! There's more on Artie Moore here, where not quite the same claims are made. The source is given as the book 'Arthur Moore-The Forgotten Spark' by Leighton Smart GW0LBI. Leighton's contact details are provided.
2. "assumed the signal was from another ship or land based station". Either Artie knew Titanic's call sign or not!
That may be unfair. I'm not sure what the CQD procedure was, but later SOS signals were repeated by all the ships and shore-stations who heard them. The purpose was to spread the word so that anyone nearby who missed the original call could react. At the time of the Titanic sinking most ships did not have wireless, or didn't operate a 24 hour watch. So lots of similar signals flying about.
More confusion because call signs and procedure abbreviations were less standardised, for example the Titanic was MGY, where M stood for Marconi. As most ships in 1912 were Marconi equipped and operated, it was common practice to drop the M.
Another issue was what morse code sounded like. Not the clean audio beeps we associate with Morse Code today – that came later. In 1912 many receivers used a coherer, which produces clicks. Two clicks close together are a dot, and two clicks farther apart are a dash. Messages are decoded from the clickity-click rhythms making up characters and words, and the rhythm is disturbed by natural static (lightening), and by other morse signals. In 1912 receivers and transmitters were both broad, and the best filter an operator had was between his ears. Spark telegraphy was a seriously difficult to acquire skill, easy to get wrong unless conditions were good.
Equipment broadness may not have been all bad. In 1901 Marconi proved long distance radio was possible by transmitting the letter S across the Atlantic, but it shouldn't have worked, and it's proved almost impossible to get the same result with modern equipment. The explanation I like is that early transmitters and receivers sent and received high frequency harmonics as well as the fundamental signal, and a harmonic crossed the Atlantic by bouncing off the ionosphere. (A possibility unknown in 1901 but thoroughly researched and exploited by Marconi later.)
So what exactly could be received in the UK during the Titanic sinking is difficult to pin down. One thing in Artie's favour is his antenna – a large installation strung across a valley, not a bit of wire in the garden!
4. "Together they worked to boost the signal". My knowledge of wireless telegraphy is limited, but there is nothing I gather that could be done to 'boost' receipt of the signal.
Not nothing, particularly if two or more antenna are available. Wires have directional properties, so it's possible to select and combine antenna outputs for best reception by maximising the signal whilst minimising interference. The sensitivity and recovery time of a coherer can be adjusted to filter out some of the muck, as tweaking can the sensitivity of the headphones. Possibly the installation had some form of pre-selector tuning too. Simple by modern standards, but a good operator had plenty of opportunity to improve results. When I experimented with a coherer, it was difficult to adjust.
Though Artie Moore has other well documented achievements, I have to agree with Julian that this could be another example an individual riding a disaster for the glory, maybe by piecing together what happened from repeats rather than hearing the actual Titanic. Marconi certainly banged the drum, because it was very much to his advantage for all ships to be legally required to fit radios. As it was to everyone else in the trade, plus radio operators became rock-star status celebrities! Many politicians used the disaster to progress their careers. In terms of what really happened, the US enquiry was badly flawed and the UK Board of Trade Enquiry was imperfect too. Many fibs, exaggerations, gaps, misunderstandings, contradictions, and jumping to conclusions that suited a vested interests.
Still going on! Caught out today, the guilty party lies repeatedly and denies everything, whilst loyal supporters cynically endorse falsehoods galore. It seems many people don't value the truth unless it suits them.
Dave