I see about 4-5 transmissions on 115 each day, but they're few and far between. I would guess that they set it up to see if their would be too much traffic for both Bryn Mawr & Lankenau on the same channel. Now that they've had a few weeks to see how it is, they probably put both on the same channel.
Bryn Mawr used to have a secondary security channel called S3. That went away with the new system.
111 should be a maintenance channel. They might have them set up as a maintenance/secondary security channel, but I don't know. Time will tell.
Nothing on the satellite location system so far this week, but my guess that with it being a short week, the installers will probably wait until next week to get started again. We would never start IT projects on a short week, if we could help it. There's probably some cleanup that they could be doing for the hospital system this week.