In Arc Raiders, the Frequency Modulation Box isn’t just a funky name — it’s one of the rarest and most frequently complained‑about items in the current meta. It’s a Rare, recyclable loot token that players need for late-game progression, especially Expedition 2 stage requirements. Specifically, you’re tasked with collecting multiple copies of this item alongside other components like Ion Sputters and Leaper Pulse Units to complete outfitting phases.

What Is a Frequency Modulation Box?

A Frequency Modulation Box is:

• Rarity: Rare
• Found in: Exodus loot areas
• Weight: 1.5 kg (3 per stack)
• Value: ~3,000 Raider Coins each
• Use: Recyclable into electrical crafting materials and required as an Expedition milestone item.

This item isn’t sold by vendors, nor can you reliably craft it — you must loot it in a raid. That scarcity is key to understanding why farming strategies matter.

And yes, if you’re trying to stack progression materials, sometimes you’ll see folks online looking to U4N, buy arc raiders crafting materials quickly when the loot grind gets painful — but there’s no shortcut inside the game itself besides looting.

Traditional Hotspot — Stella Montis

Across community data and guide sites, Stella Montis consistently comes up as the most reliable map for finding Frequency Modulation Boxes — especially the Assembly Workshops, Medical Research, and Business Center POIs.

That’s where most players report finding them, and where Expedition requirements are generally satisfied. The rough odds here vary — some players report getting one box every 5–10 runs solo, while others grind for dozens of raids before completing their quota.

Spaceport: A Real Alternative (But What You Should Know)

There is a reason Spaceport, and specifically the Rocket Assembly area, gets mention among some guides and player reports:

• Rocket Assembly area on Spaceport includes loot containers in an Exodus‑tagged zone, which means it can drop rare loot like Frequency Modulation Boxes.
• Community players have debated whether it’s worth farming here because container density is lower than Stella Montis, and many runs can go cold as a result.

Put simply: Spaceport can spawn the Frequency Modulation Box thanks to the Rocket Assembly POI’s loot table, but it’s far less common and far more RNG‑dependent than Stella Montis. Because Spaceport doesn’t have the same concentration of loot containers or high-quality indoor areas, some players call it a “secondary” spot rather than a main one.

A Farming Reality Check

Here’s how things shake out numerically in community experience:

• Stella Montis: Most players find boxes most frequently here — often within the first 10–20 raids if you hit the high-density rooms.
• Spaceport Rocket Assembly: Some players report very low spawn rates — occasionally zero boxes over many runs.
• Safe Pocket Strategy: Many raiders skip combat risk by running “naked” (minimal gear), grabbing the box if it spawns, putting it into Safe Pocket, and surrendering to secure it.

It’s worth emphasizing: because this item’s spawn spots are tied to lootable containers, late match spawns and heavy PvP competition can leave you running empty-handed. Players sometimes do 30–40 runs only to find a handful of boxes.

Practical Tips

1. Prioritize High-Loot Zones: If you get Stella Montis and spawn near Assembly or Medical POIs, focus there first.
2. Use Safe Pockets: If you see a box early, stash it quickly — dying with it is a real loss.
3. Spaceport Runs: Treat Spaceport as supplemental — useful if you’re farming multiple relics in one run, but don’t rely on it solely.
4. Expect RNG Variance: There’s no fixed spawn timer — sometimes you find one in the first few minutes; other times you leave empty after a full match.

Why It Matters

Because Frequency Modulation Boxes feed both crafting and Expedition progression, supply shortages can become a bottleneck — and that’s why players often discuss alternative sources or trading outside the game. In the current design, engaging with loot routes and container strategies is the only reliable way to collect them in-game.

In short: Spaceport isn’t your primary farm spot, but with a bit of luck and persistence you can find Frequency Modulation Boxes there — especially around the Rocket Assembly POI. Expect low drop rates, use clever raid tactics, and don’t rely on Spaceport as your main source unless you’re supplementing runs elsewhere.