nice old modulator

[BILL WINTER]

I recently came across a nice old modulator ,with the schematic for it.
The schematic say it is from a NAVSHIPS 900,809 manual. can any one 
out there help with --which transmitter was this, and  where can I find the rest of the
schematic, or the manual? if this was a TM,or TO I could probably deal with 
it , but I am totally lost with this navy stuff.
MANY tnx    Bill K3JPB

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