How to Complete Triangulation in Call of Duty: Modern Warfare 4 DMZ

In Call of Duty: Modern Warfare 4’s DMZ, Triangulation is order 03 on DMZ ORDERS PG 2, under the chapter CH. UNDERGROUND 1/2, after Eye in the Sky and Watch for Bumps in the Underground orders. It takes three transmitter placements: two on radio towers and the last on the antenna on top of La Grande Vie in Songdo Wharf.

Quick answer: Put a transmitter at the summit of each of two radio towers marked as order objectives. Next, use the elevator in La Grande Vie in Songdo Wharf, climb the stairs to its roof, and set the last transmitter on the antenna.

Triangulation order tasks

The order lists two objectives, and you can work through them in that order:

Place a Transmitter on Top of 2 Radio Towers (2/2)
Place a Transmitter on Top of La Grande Vie in Songdo Wharf

Pin the order before you open the tac map. The radio towers that count for Triangulation carry an ORDER OBJECTIVE marker, and you can ping them to set a route.

Radio tower locations for Triangulation

The five radio towers below work for the order. You need any two of them, so pick the pair closest to your route.

Tower	Where it stands	How to get up
South Korean Border Zone	Woods between Imjin Suburb and Mujin Pass	Yellow ladder inside the tower
South Island	Above the park area	Yellow ladder up the middle
Construction Zone	Rooftop of a tower block beside a gas station	Yellow rope up the building’s side
Deadtown	Tall tower, threat LOW	Ladders through each platform stage
North Korean Wilderness	Lattice of girders	Jumps and mantles along the girders

The South Korean Border Zone tower sits among red-leaved trees. At both the Border Zone and South Island, the yellow ladder runs straight up to the platform.

Climbing a radio tower ladder to reach the platform where the transmitter goes. Shown at 00:25 in Kasum Adventurer’s video. Image: Infinity Ward

The Construction Zone tower is different. It stands on top of a building, so you grab the yellow rope hanging down the side, climb to the roof, and then walk over to the antenna. At Deadtown, the climb is ladders only, stage by stage, all the way up.

Reaching the North Korean Wilderness tower means climbing without a straightforward ladder. Use the girders to jump and mantle upward, then pull yourself up by catching the horizontal bars from the side. At the summit, you’ll find a TOWER CRATE; press the crane button (PRESS BUTTON) for a fast descent.

Placing a radio transmitter on a tower

At the top of a tower, face the mast until the “PLACE RADIO TRANSMITTER” prompt appears, then hold the interact prompt. The first objective’s counter ticks to 1/2, and then to 2/2 after the second tower.

Place radio transmitter on tower — The transmitter prompt on a tower platform; hold interact here to advance the tower counter. Shown at 01:05 in Kasum Adventurer’s video. Image: Infinity Ward

To get down, jump off and deploy your parachute, or use the crane button on towers that have one.

La Grande Vie in Songdo Wharf: Final transmitter

In Songdo Wharf, La Grande Vie is a tall residential tower near the waterfront on the map’s eastern side. The area has a LOW threat level.

Mark La Grande Vie on the tac map, then travel east. The elevated railway is a quick route into Songdo Wharf by vehicle.

Enter through the ground-floor lobby and call one of the elevators. Inside, use the panel with the “USE ELEVATOR – ASCEND” prompt. It lists floors 1 through 12.

La Grande Vie elevator panel — The elevator panel in La Grande Vie, which carries you most of the way up the building. Shown at 01:23 in Kasum Adventurer’s video. Image: Infinity Ward

Continue from the upper floor up the stairs until you reach the roof. Expect a few enemies in the stairwells and prepare to fight.

Walk past the tent on the roof to the tall antenna mast. A yellow generator (TURN ON THE GENERATOR) up there powers a SECURITY STATION, but you can ignore it, since the order does not need it.

La Grande Vie rooftop — The roof of La Grande Vie, where the antenna for the final transmitter stands. Shown at 01:53 in Kasum Adventurer’s video. Image: Infinity Ward

Face the antenna mast and place the transmitter. This clears the second objective and completes Triangulation.

If you have already finished the other two orders on the page, placing this transmitter also completes the chapter page. A LEVEL UP / NEW REWARDS banner appears on screen.