Wireless A Mk 3 - Normal
This is in Waterproof Container "C" and has the regular set up - with a Pull Switch allowing the operator to choose between a Battery Power source and Mains... and a Mains Plug board which allowed the operator to choose the input voltage.
Wireless A Mk 3 - Modified
This is also in Waterproof Container "C", but has been modified (all modified parts are Australian - am assuming SOA use - confirmation required) - with a Pull switch which allows the operator to choose between a Battery Power source and Generator... So... No Mains input... presumably because Mains Power was not that common where the set was used.
Wireless A Mk 3 - Hand Generator, 6v PSU and Spares
Waterproof containers:
"F" - Hand Generator with table clamps (not exclusive to WS A Mk 3)
"D" - 6v PSU and Spares
Hope the above is of interest.