This should help
US Army Corp of Engineers New England - Scan New England Wiki
As other have pointed out, you found the input to the Repeater, now which one (search 168-174)
Federal VHF/UHF Channel Plans - The RadioReference Wiki
162-174 MHz
NTIA Manual Chapter 4 Section 4.3.7
Government land mobile channels are normally on 12.5 kHz steps (162.05, 162.0625, 162.075 ...) in NFM, P25, or other digital voice modes.
No standard offset.
There are other unpaired single frequencies in other parts of the band that are not specified in the manual.
Use of the band 162-174 MHz by the military agencies is limited to non-tactical or intra-base radio operations.
162.0500-166.4875 Mobile/repeater input
166.5000-169.5000 Unpaired single frequency systems
169.5125-173.2000 Base/repeater output
173.4000-173.9875 Base/repeater output
Been hearing what I believe is USACE Reservoir Control in Southwest CT. This repeater comes in very clear at my location but I believe it is part of a wide area net. Weather reports and maintenance related traffic. Anyone in New England area may want to look around the band for similar traffic.