They look like the DB-4060 4 cavity duplexer ----2 transmit and 2 receive.
The DB 4062 is the 6 cavity duplexer.
Both are BP/BR.
Tuning instructions can be found at
http://www.repeater-builder.com/db/db-4060-4062-tuning-inst.pdf
Jimmy Floyd
NQ4U
www.mtndx.org
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