he manual that I ordered online clearly states that it is for model
83Y749 but there are differences in the circuit diagram. Namely, my
version does not use a power supply filter choke, it was replaced with a
680 ohm resistor, and there are

My two original schematics for the Ocean Hopper, dated 1940 and 1941, both show
the choke. Neither of them reference your numbers. The kit was identified as
B9800