This is a NXDN system correct? I find it unusual that the LCN's are numbered 1...2...3...etc. The two NXDN systems I've run LCN finder on, I always get Channel Numbers (21, 246 etc) and not consecutive LCN numbers like you're trying to figure out. The LCN format you're seeing, I usually see this in MotoTRBO trunking system. LCN is not the same between MotoTRBO and NXDN.Will do, unfortunately, won't be close enough to site until July 30.
The LCN of 3 (LCN 1 & 2 was found this way)on the control channel was found when searching just a subset of freqs. Is search of groups of 5 or less a valid technique? Maybe the programming of the system was implemented using freqs from both sites? The freq I suspect is the control freq for site 2 is weak compared to the site 1 control freq.