Plus a number of agencies which are still paged on old channels have their pages multicast over that UHF channel as well. Franklin is doing this with their squads, county was and may still be doing this with the Franklin fire companies, I think I heard Bridgewater doing this too.
If you programmed 470.1375 with the PL, try removing the PL and making it carrier squelch.
There have been complaints from other scannists about poor reception of the trunked system and paging channel in parts of Montgomery, maybe you're just in a bad area.
Scott -- I noticed 74R paged on JEMS-3 a couple weeks ago, not sure whether it was multicast on 470.1375. 47R is on JEMS-1, I'm not sure where 79R is these days, I do hear them but never remember to look at what channel it is.