Md Dnr
This is a copy of a post I sent to Scan DC
From my recent observations from all across the state, they seem to be transitioning to possibly a region based, multi site voted receiver system with different transmitter outputs linked together with one or two being high power and the others being low power fill in sites. Heres what I have so far:
Eastern side of the bay :
151.205 dcs 532 linked to all of the following
154.1675, 151.4225, 151.4675, 159.09, 151.34 not quite sure in the exact locations of each but all of them tranmitting dcs532
Southern
155.37 pl 103.5 no other transmitter links but seems like it may be a voted receiver
Central
151.2425 (Frederick transmitter) linked to 159.3825 dpl 631
Western (still the same)
151.205 (all sites so far) pl118.8
All of the southern and eastern channels are now carrying marine traffic
Parks statewide (still the same) 159.45 but DNR officers have access for law enforcement purposes.
There is one more system I've monitored that I'm not quite sure yet what is going on with: That is that the 159.09 under a different dpl and the 155.37 under a different dpl (both dpl 632) are also linked somewhere in central MD. May be specifically to cover Patapsco ?
Hope this helps, Karl