A quick intro, since this is my very first post on the forums.
I have been involved in radio communications for most of my life, both as a hobby and professionally. I worked in LMR from 1982 to 1993, first at the Motorola MSS in Elmira, and when that company imploded due to infighting between the owner and her children, I continued at an independent shop. (This was all in the pre-trunking, pre-digital era). During that time I worked on most of the public safety systems in Steuben, Schuyler, and Chemung counties in New York, and Bradford and Tioga counties in PA. Many of those systems have changed quite a bit in the intervening years, while others have not changed at all.
I then spent several years as a broadcast engineer in local radio and television. Since 2005, I have been working exclusively in aviation, specializing in avionics. I currently employed in the corporate flight department of a certain Fortune 500 company based near here...
Though I have been a long-time Ham, I have always been primarily active on HF. I have recently gotten back into scanning VHF/UHF.
As to the topic at hand: I have been monitoring the local Mobiletech NXDN CC in Horseheads (Site 43) with DSD+ Fast Lane version 2.169, coupled to an RSP1A SDR.
The decode shows that the site 43 CC is receiving on 159.765
The NL shows site 8 (Corning), site 21 (Ithaca), site 35 (Seneca), site 41 (Penn Yan) and Site 42 (Dansville). The frequencies all correspond to those listed in the RRDB for those sites, and they are indeed all geographically the nearest to here.
The final “mystery” site in the NL shows: R13-69; CC=40664 150.83
There is no site 69 in the current DB. 150.83 is listed as a Mobiletech NXDN CC for site 73 in Newark in Wayne county. It is also shown as an analog channel in the older LTR Net system in Prattsburgh in Steuben county. That location would make more sense in the NL as it is much closer to here than Newark, so perhaps the Prattsburgh LTR site is transitioning to NXDN
The Corning CC on 150.9425 shows it receives on 159.735. Its NL shows: 21, 32, 41, 42, 43 and the “mystery guest” - site 69.