You should have been iintroduced to 2 people by Scott. Those are your contatcs. unfortunately, you have to speak to them again after the mission is finished, they don't get added to your contact list. Go back and speak to them and they will give you missions. One will be in the Resistance base in the underground, there other is somewhere near the magisterium.
Always remember, we were Heroes.
EDIT: Beaten to the punch, lol.
As a side note, not there are no radio/paper missions in Praetoria.
I am at lvl 5 and am out of contacts. I am resistance and only got 2 contacts (White and Calvin Scott). Scott says wait until lvl 8 and White tells me get outta his face.
Are there any other contacts I can get or radio mission contacts?
@ThrillKiller