Type: ICW (Interrupted  Continuous Wave ) a.k.a. MCW shipboard transmitter
Frequency range:  600 to 800 metres ( 500 to 375 KHz respectively)
Power level out: 500 watts
Power level  in to oscillator n:  800 watts.
Modes: MCW
Tubes used: Single oscillator valve plus two rectifier valves.
Mains frequency 1,000 Hz

Made by : Marconi UK
For a more detailed document on the MC-8a transmitter, please select this link.   (Hudson's Bay Achieve # PP2009A)
 

MC-8a transmitter.  (Marconi International Marine Communication).

---

Contributors and Credits:

1) Hudson's Bay Companuy Archives

May 28/192/19