Correct. I'm just using what the FCC has pretty much given the radio service as a tone pack. Usually in this case it's PL 103.5 (per the DB and the amateur repeaters in the area). DPL I can't do much with. I can confirm that 103.5 on the 156 machine is correct, however. I can put the input on my second VFO and just listen in on that when a repeater opens to find out input since they are known through the ULS.
Speaking of feeds....I just noticed mine is down...again. Time to hit the support forums.
Edit: Neither input is showing any activity from transmissions on the 156 SO. This could be that I'm on the wrong side of the mountain or it's an internal link at the repeater house.
Could be a combination of things. Since it transmissions on the inputs [if there are any] aren't going to be broadcast from a mountaintop, you are going to have less chance of hearing them. And, being that i know pretty much zero about Preston Co or their public safety configurations, I can't say how they are going about things. But certainly one or more of those inputs could be inactive, or they may be active in areas too far from you for you to hear activity on a regular basis [but perhaps a hit and miss signal when one of the mobiles is in a good location].
Even though there are four repeater pairs licensed, entirely too many scenarios are possible. One scenario could be that one input is used for two separate outputs, with a different PL on the input being used to trigger one repeater output or the other. Another scenario is that they may have multiple repeater pairs inactive and may just have one pair up for Law and one up for Fire/EMS. Hard to tell.
If you look at the FCC license [and if you assume everything in it paint a proper picture of how things are currently being done in Preston Co], then you see:
154.3925 - Bruceton Mills (off CR-73)
154.1525 - Kingwood (Briery Mtn / Caddell Fire Tower)
156.2325 - Kingwood (Briery Mtn / Caddell Fire Tower)
154.3925 - Fellowsville (Laurel Mtn)
155.3175 - Fellowsville (Laurel Mtn)
Now, consider how things are listed in the RRDB. If the RRDB information is correct, it doesn't really jive with FCC info. RRDB says 154.3925 is Fire North - FCC records show a 154.3925 repeater in the North and the South.
So, who knows what is really going on, not me rofl. That's why RR doesn't rely upon FCC data all by itself, since the way an agency has things set up may be exactly opposite of how the FCC lists it.
But yeah, it possible that you just aren't going to be close enough to hear most communications on the input (and I think that is the case with most people). It's a hit-miss potluck thing a lot of times where you might hear something on an input but only if the mobiles are in the near vicinity, line of sight to you or are up on a hill/mtn transmitting.