Stopping the Transmission

Chapter 5 - Ghosts and Proxy Soldiers Inexplicably denied access to the augmented terrorist's corpse, Sarif sent Jensen to steal the dead man's neural hub from the morgue. At the same time Frank Pritchard, Sarif's Chief of Cyber-security, tried to figure out how the Aug had bypassed the company's firewall so easily. The hub Jensen steals provides his first clue: turns out, a very talented hacker had been controlling the terrorist's actions remotely, possibly from somewhere in Detroit...

M7 - Stopping the Transmission is a mission in Deus Ex: Human Revolution.

Locate and shut down antenna in Derelict Row
Enter Derelict Row and make your way up to the second floor. Prior to reacing the antenna you must make your way through an area with mines. Take care of them either by approaching them slowly to disarm, or simply shoot them. Then move forward to the roof where the antenna is located. Stop the transmission by hacking the terminal or use a pocket secretary to get the password.

It is possible to disable the terminal before aquiring this mission. when doing so, this dialogue occurs:

Pritchard: "Jensen... What did you just do?"

Jensen: "Shut down some sort of signal antenna, I figured it might have been transmitting something dangerous."

Pritchard: "Hmm... Well, isn't that interesting."

Jensen: "Care to elaborate? Pritchard? Pritchard!"

After bringing the neural hub to your apartment, Malik is told to pick you up and bring you to Highland Park, but will not meet you at your apartment's helipad, instead asking you to go to the helipad next to the transmitter. So you are still sent to Derelict Row. It is not verified whether this gives less exp than saving the transmitter for later.