Chuck, I have an original manual for the RT-18A/ARC-1 that I liberated
from the trash can at Page Airways in the mid-60's. I also have the
Aerocom multi-channel modification package that was stuck inside it.
Its a big book with a multitude of fold-outs. Mine is also in delicate
condition, although not as bad as the dead sea scrolls, of course, but
its been around the bench, obviously. If there's something specific I
could help you with, I'd be glad to do what I can. I guess I should
have made master copies of a lot of manuals I have before I retired and
lost the facility to do so....hi!!! FYI, the book doesn't have a TM,
etc. designation. Its obviously WWII vintage as it mentions the Navy,
the AAF, and the British Air Ministry. The preamble makes it appear to
be a factory book. The heavy, reddish-brown binder looks typical Navy
from the period? Wish I still had the original ARC-1 I had back then!!

Jeep/K3HVG

C