Back before P25 [aka 100.0 Hz], the 3 Rptr Pairs for USC in New England were:
165.2375 R / 166.4375 in NET-01
169.4500 R / 171.0750 in NET-02
165.4875 R / 166.9750 in NET-25
Each Repeater was located so as to provide overlapping coverage with the other Two Repeaters.
NET-01 Boston,
NET-02 North Adams, Deerfield NH, Prov RI,
NET-25 Orleans, Worcester
Some sites seem to be DOA now that P25 has moved into the Region.
As with the old 100.0 Hz on the input, there is only one NAC on the major Rptrs [$325] so a bird in the Sky will trip multiple Rptr Sites.
kennyblues are you located in MA? I heard the same thing today and I am located in NYC (and pretty sure they were coming in on NY repeater).
I wonder if 165.2375 analog is part of a larger network, if you are in MA and hearing the same thing, it must be quite a repeater network!
Food for thought, 169.450 NAC 301 is NET 2 and I have heard mostly New Jersey units operate.