[Motorola] Strange MSR-2000 Duplexer

[Coote, Jay]

I am looking for tuning instructions for a VHF duplexer found in an
MSR-2000 repeater cabinet.
The only numbers seen are TKN8293A.  I can furnish digital photos to aid
in ID'ing.
It looks like it was made for Motorola.
 
Thanks