As the last jammer is at the subway station, you have to start by getting there. Your objective is located east of the Museum. I'd suggest flying there #1, thanks to which you will be able to land on the partially destroyed glass dome #2, without alarming the enemies below.
The entrance area is patrolled by a few Thugs armed with firearms, though you don't need to eliminate them. Just wait for the two standing beside the stairs #1 finishes talking and goes away. Jump down and head towards the subway station entrance #2.
After reaching the station, carefully approach the two guards on the left and take them out simultaneously #1. Use the stairs they were guarding and you should soon reach the station, where you need to turn left #2 and head east.
Use the Grapnel Gun to reach the upper platform #1 and continue going east, choosing the destroyed passage on your way #2. Soon afterwards you will have to run and perform a slide.
Stop after reaching the barricaded passage. Turn on the Detective Mode and you should note that the nearby wall can be destroyed #1. Choose the Explosive Gel, spray it onto the wall and detonate #2. Luckily, it won't alarm the enemies.
You can continue going east and eventually you should reach a new group of Thugs #1. You can attack them from above or quietly jump down and takedown two of them at once. After finishing them off, head east. Choose the Remote Electric Charge and use it to activate the industrial engine above the gate #2. Crouch and quickly get to the other side.
You have to be careful, as you're nearing in on the main room of the station, guarded by five armed Thugs. I'd suggest using the ventilation shaft opposite to you #1. After reaching the exit, wait for a good moment and quickly use the Grapnel Gun to reach one of the vantage points above #2.
The overall strategy is very similar to the previous fights with Penguin's men. As a result you have to consider that each time you eliminate one of the enemies, the others will be alarmed. Just like at the police station, it's good to use the Inverted Takedown #1 #2. Unfortunately many vantage points aren't above balconies, so you won't be able to eliminate more than two guards this way.
Of course using the Inverted Takedown isn't the only way of eliminating the enemies. If you're more creative, you can always hide inside the grates #1 or spray Explosive Gel onto destructible wall #2 and ceiling fragments.
Surprising enemies from above #1 is rather risky, as the small size of the room makes it easy for other enemies to notice you after you attack a given thug. Using the smoke pellets can partially solve this problem. Make sure you've secured the station and break through all three screens of the jamming device #2.