[Milsurplus] C-4/ARN-7 Schematic/manual

[Dave]

G'day all,

I have a BC-413 Radio compass receiver (SCR-273) without the BC-414 control
box.

I have a spare C-4/ARN-7 which covers the same frequency range on each of
the 4 bands. I am hoping I may be able to adapt it until I can locate the
correct box.

Wondering if some kind person could possibly scan the schematic diagram of a
C4 for me, so that I can compare it with the BC-414 diagram I have?

Does anyone know if a complete ARN-7 manual as a pdf file is available on
the net?

Cheers and thanks
Dave
VK4KDP