Best Place To Farm T4 Capture Keys?

[xkillo32]

I tried Phobos, Opik and it took 10 rounds until i got a t4 capture key

is there an easier place?

[OkniolasPrime]

Interception at: Uranus stephano

[Kalvorax]

augustus mars...MD (i think), cap, and ext. normally shows up after round 3 - 5....though its rare not to have one show up until round 6 or 7

 

from wiki

 

Tower IV Exterminate, Capture, and Mobile Defense keys can appear Round 3 or later on ‘Medium’ Interception missions (starting enemy level 10-20).

Edited September 29, 2014 by xcynderx

[Sloan441]

Augustus, Mars.

 

It's the best location. Easy enemies on a small map and it's the lowest level that can cough up T4C (and E and MD) consistently.

 

Worst case, it's also easy to solo with the right warframe.

[ThunderZsolt]

Worst case, it's also easy to solo with the right warframe.

 

with zephyr i can solo any corpus interception until my gun kills them (never happened, because i always got my T4 key first)

i usually go to the interception on europa for capture keys (the name is armaros or something like that)