This is just a snippet which I have made from my library of the Communicator Magazine, publication run 1947 to 1977, and this story taken from the Summer 1976 edition.

For the most part it is interesting, hence its presence here, but for the pen-penultimate and the penultimate paragraphs, things lapse into Beano/Dandy comic land: however, only a SPARKER would understand.

RN TELEGRAPHISTS ASSOCIATION 1918.pdf

Now I ask you ! "Pull this one, it's got bells on it" springs to mind. The paragraph beginning with "Sparkers", as we were known..... is straight out of a Beano or a Dandy ! I know the transmitters of those days backwards and have written authoritatively about them on the Collingwood Museum website. The very first transmitter capable of fast RELAY keying speeds was the 89, but even it had to be modified for higher speeds, like for example RATT at 50 bauds, when the GK185 was introduced which keyed the MODULATOR and not the keying relay. When the 600's were designed in the late 1950's they were fitted with a keying RELAY which had no limits other than the autohead or the operators input. NO EQUIPMENT prior to 1942 [the date of the basic unmodified 89] was first used in the RN could key fast because each and every one of them from SPARK to ARC to early VALVE all keyed the HT of the transmitter and this had severe limitations and in addition, all transmitters had duty cycles.  Moving further into the Dandy/Beano comic, for anybody in the RN to send Morse at 40 or 50wpm on a pussers Morse key [that is any pussers Morse key] was I M P O S S I B L E full stop.  To read Morse at 30wpm with a pencil [no typewriters in those days] is also pie in sky if we are talking about sustainability - what an operator does on a circuit for a four hours watch type of stuff and not just receiving predictable operator to operator ops sigs, and the like. For friend McELROY [stinks of KILROY was 'ere] to SEND and RECEIVE at 75 wpm is laughable [and lamentable] simply because this is in the realms of the UNDULATOR and not the human being - super man included.  However, the writer of this article had clearly forgotten about the WW1 days of embryonic wireless telegraphy and its limitations especially when rarely did they operate above 1 M/cs and the operator was always in fear of getting a bloody big belt from his Morse key when the old spark [and arc] transmitters lit up the trunking enroute to the upper deck aerials. Even from that time until the start of WW2, transmitters were very limited in their capabilities [with radhaz problems a positive danger] not to mention intermodulation and receiver AGC problems which made only simplex channels viable, rendering things like "break in procedures" impossible; even receivers radiated a signal sometimes which if connected to an aerial gave the ships position away during periods of radio silence. Duplex working was a thing of the future. The standards of Morse code [reception and transmission] in the R.N., were lamentable during WW2 as became obvious when, after VE day, the navy turned its guns on Japan and formed the BPF [British Pacific Fleet].  We couldn't communicate successfully because the USN used typewriters to record high speed Morse on their broadcasts and also bug-keys to send Morse, whilst we were limited to using a pencil and an antiquated u-down Morse key limiting us to speeds much lower than used by the USN. See this file for those details SIGNAL_SCHOOLS_OF_THE_ROYAL_NAVY