Black Mesa: Uplink is the recreation of the Half-Life demo (HL: Uplink) released by Valve in early 1999 which featured content that was scrapped from the original storyline.
In the 2012 version of Uplink the transmitter dome was found right next to the stalkyard. In the original Uplink, the dome was behind a mountain pass beyond the stalkyard and so it will be again in the Redux version! As you can see from the 2012 screenshot in the corner, the visuals have been improved greatly and there is more space to explore. Thusfar I've improved the new version by making things larger, but the dome is actually a little bit smaller now and will be less open on the inside for gameplay purposes. Exploring the area will grant you with goodies, but can also be potentionally dangerous, with new enemies spawning in.