ADC is actually what used to be the 70's Audio Dynamics. In the mid-late 80's ADC became a division of BSR/dbx (many of which were lower priced dbx clones, or close). Once BSR sold off dbx, I *think* ADC became a non-entity, or at best just got completely swallowed up by BSR. ADCOM, I believe is a relative newcomer, probably an off-brand supported by some larger mfr. Likely some importer. The ADC codes you found likely are for remote operated ADC components from the late 80's-early 90's.

ADCOM, if just an importer, likely has their stuff made by a wide variety of real mfr.s, and leave all the programming, and design particulars to the actual mfrs. Thus, I'm not suprised at their lack of support.

Jim