The red and white telecom towers of Cheonwang Peak Array above Hajin City, MW4 DMZ

MW4 DMZ 3D Printer ingredients

Cheonwang Peak Array Server Rooms in MW4 DMZ

The Cheonwang Peak Array server rooms are on the DBN TV station grounds in central Hajin, around grid F7. The game sends you there for CPUs and Comms Modules, and at Medium threat it is calmer than Netshin Tech Complex.

Cheonwang Peak Array on the map What the server rooms give

Last updated October 28, 2026Game version: Launch (October 23, 2026)

◆ Fortress · ■ Compound · L Lieutenant Tower · U UAV Tower · A Ammo Armor Cache · P Police Station · C Clinic · G Gas Station. Rings show the highest threat level (Low, Medium, High, Critical, Extreme); the white ring is Cheonwang Peak Array. Smaller markers from Activision's official Hajin Tac Map.

Where the Cheonwang Peak Array server rooms are

At Cheonwang Peak Array, in central Hajin, on the former South Korean side.
Around grid F7 on the Tac-Map: the key card for the control room in the broadcast building names that square.
The largest telecom array in Hajin, on a flat summit in the South Korean wilderness, now held by enemy forces.
Huge granite boulders to the west, with trails winding between them.
The array sits on the DBN TV station grounds, now held by enemy forces.
The buildings inside are cramped barracks.
The easier way down is through the woods to the north.

Threat level at Cheonwang Peak Array: Medium.

Cheonwang Peak Array or the other two places?

The game's hint for CPUs and Comms Modules names three places. The calmest of them is the Deadtown hillside facade buildings, at Low threat. Here is how all three compare:

Place in the hint	Threat
Cheonwang Peak Array server rooms, at Cheonwang Peak Array	Medium
Netshin Tech Complex server rooms, at The Grid	Extreme
Deadtown hillside facade buildings, at Deadtown	Low

Fighting raises an area's threat, so a quiet approach keeps it low; our guide to DMZ threat levels and enemy types explains what each level sends. Every other 3D Printer ingredient and where to find it is on our MW4 DMZ crafting materials page.

What the server rooms give: CPUs and Comms Modules

At the 3D Printer, every recipe has an Ingredient Locations button with a one-line hint for each ingredient. For the CPU and the Comms Module, it reads:

Found primarily in the Netshin Tech Complex server rooms, Cheonwang Peak Array server rooms, and Deadtown hillside facade buildings.

The hint names search areas, not fixed spawns, so search the computer and server rooms in the station buildings and move on if they come up empty.

Ingredient	Rarity and value
CPU	Rare, worth 500 DMZ Cash
Comms Module	Epic, worth 1,500 DMZ Cash

Comms Modules are the ones players need first: the Uncommon Ingredient Printing upgrade costs 50,000 DMZ Cash plus 20 Biomaterials, 10 High-Tenacity Fibers, 5 Comms Modules. Every recipe and upgrade that takes them is on our where to find Comms Modules page.

You can also print one: once you have the Epic Ingredient Printing upgrade, the 3D Printer makes a Comms Module from 100 Electronics, 3 CPUs.

More to do at Cheonwang Peak Array

Iskra's Control Room: opens the control room on the upper floor of the broadcast building. Dropped by the Lieutenant Iskra, though not every time.
Safes: Cheonwang Peak Array has three safes, and Gold Bars turn up in them. One of the safes is upstairs in the DBN building, the one with two radio towers on its roof. Our best loot guide lists the other places with valuables.
The Ears Everywhere Order: hack the communications broadcast system at Cheonwang Peak Array, then collect Encrypted Voice Logs. It is in our MW4 DMZ Orders list.

Every locked door and marker around it is in our location guide to Cheonwang Peak Array, and the server rooms in the towers of The Grid have their own page: Netshin Tech Complex.

Questions

Where are the Cheonwang Peak Array server rooms in MW4 DMZ?

At Cheonwang Peak Array, the telecom array on the DBN TV station grounds in central Hajin. The key card for the control room in its broadcast building names grid F7 on the Tac-Map. The game's hint names the server rooms as a search area, not single rooms, so search the station buildings.

What can you find in the Cheonwang Peak Array server rooms?

CPUs and Comms Modules: the game's Ingredient Locations hint for both names the Cheonwang Peak Array server rooms. The CPU is Rare, worth 500 DMZ Cash; the Comms Module is Epic, worth 1,500 DMZ Cash.

Is Cheonwang Peak Array safer than Netshin Tech Complex for CPUs?

By threat level, yes. Cheonwang Peak Array is Medium; the Netshin Tech Complex server rooms are Extreme and the Deadtown hillside facade buildings are Low. All three are in the same hint for CPUs and Comms Modules.

Which key opens a door at Cheonwang Peak Array?

Iskra's Control Room: it opens the control room on the upper floor of the broadcast building. Dropped by the Lieutenant Iskra, though not every time.

Are there safes at Cheonwang Peak Array?

Cheonwang Peak Array has three safes, and Gold Bars turn up in them. One of the safes is upstairs in the DBN building, the one with two radio towers on its roof.