If you mean 160.83, I believe they're simulcasting from multiple sites; when I'm on the GSP near Route 280, I can hear a hetrodyne.
Here's a list of their licensed transmit locations. I'm not sure which sites are being used on a daily basis. I live in Bergen County and can hear the signal(s), but it/they doesn't register that well on my 'S' meter.
My guess is that the main site is Holmdel, with remote receivers spread elsewhere, and the ability to kick in whatever other site they want to with the push of a button.