Marathon: How to Sabotage the UESC Comms Antenna Fast – Perimeter Route

The Short Answer

You sabotage the UESC comms antenna on Perimeter by running to either North Relay or South Relay, walking to the base of the antenna tower, and holding your interact key until the sabotage bar fills. The marker only appears when you are roughly 80 metres out, which is why so many new runners circle the area convinced they are in the wrong place. Then you have to extract — the step does not bank until the raid ends cleanly. South Relay is the faster of the two: hug the East Wall as you push into the northern part of the zone and look for the low, single-storey building. Whole thing takes under five minutes once you know the landmark.

Current State: Season 2 Nightfall, Update 1.1.5

Verified July 2026. Marathon is on Season 2: Nightfall, live since 2 June 2026 and scheduled to run until 22 September 2026 at 17:00 UTC, when Season 3 takes over. The current build is Update 1.1.5, shipped on 21 July 2026 alongside the limited-time Vault Breaker PvE mode (21 July – 4 August, set in Cryo Archive).

Two things matter for this guide specifically:

• Perimeter is still in the game. Bungie’s Season 2 post lists Perimeter alongside Dire Marsh, Night Marsh and Outpost in the new daily-rotating Duos Queue, so the map is confirmed live in Nightfall.
• Everything reset on 2 June. Season 1 ended 1 June with a full wipe — Runner level, faction levels and upgrades, contracts, Credits and Vault contents. If you played in Season 1 and came back, you are doing the starter chain again from zero. That is normal, not a bug.

One honest caveat: Bungie reworked progression for Season 2 and has not published a contract-by-contract changelog, and only the first Priority Contract per faction carried over the wipe. So we cannot independently verify that the chain is still labelled exactly Welcome to Tau Ceti 2/2 in the current build. What has not changed is Perimeter’s geography — and that is the part that actually costs you time. If your onboarding contract asks you to sabotage a UESC comms antenna, the route below is the one you want.

What Actually Completes the Objective

• Map: Perimeter
• Objective: Sabotage a UESC comms antenna
• Spawn locations: North Relay or South Relay — either one counts
• Completion: Hold interact at the tower base until the bar fills, then extract successfully

No gadget, no key, no specific Runner shell required. On PC it is a plain hold-E at the tower’s base once the yellow interaction prompt appears.

The single thing that trips people up: the antenna icon does not exist on your map from spawn. It reveals at roughly 80 metres. Until then you are navigating to the Relay landmark, not to the antenna. Push in confidently instead of standing at the edge of the zone waiting for a ping that will never come from there.

North Relay vs South Relay

South Relay — the faster route

South Relay sits in the southeastern corner of Perimeter. If you spawn on the right or lower-right of the map, take it. The antenna spawn there has landmarks you can navigate to blind:

• It sits in the northern part of the South Relay zone.
• It is tucked beside a low, single-storey room — not one of the tall towers.
• The whole cluster hugs the East Wall, the hard boundary on the right side of the area.

Build the habit of “enter South Relay, glue yourself to the East Wall, push north.” You will be standing on top of the tower by the time the marker finally pings.

North Relay — take it only if you spawn there

North Relay is the labelled zone at the top of the map. Same interaction, same completion, but the sightlines are longer and more open. Good if you want the fight; bad if you want a clean five-minute clear, because you are exposed for the entire hold. In Duos Queue especially, that hold is when you get third-partied.

The Five-Minute Route

1. Drop and read your spawn. Open the tac-map (Tab on PC) before you move. Right or lower-right spawn means South Relay; top of the map means North.
2. Stow your weapon and run. Holstering gives you meaningfully more sprint speed. You are not looting on the way — that is what turns a five-minute clear into a twenty-minute frustration loop.
3. Enter the Relay zone and take your landmark line. At South, that is the East Wall push north toward the single-storey structure.
4. Clear before you hold. UESC bots patrol the relays and the interaction roots you in place. Sweep the immediate angles, then start.
5. Hold interact until the bar fills. If you get bumped or you release, the hold restarts — deal with the threat, then restart it immediately rather than fleeing and resetting the whole area.
6. Extract. Pull the map the instant the objective ticks, pick the nearest extraction, and route there with the same no-fights discipline. Dying with the objective complete banks nothing.

Mistakes That Cost Me Runs

• Waiting for the marker from outside the zone. The 80m reveal is part of the puzzle. Commit to the landmark.
• Searching the tall structures. At South Relay the antenna sits by the low building near the East Wall, not the towers.
• Winning a fight and then chasing the next one. The contract does not care how many kills you got.
• Not restarting the hold fast enough. Re-clear, re-hold. Do not run off and reset.
• Treating extraction as optional. It is the completion condition, not a formality.

Where the Starter Chain Leads

Clearing onboarding opens the real faction chains and the loot that comes with them — Traxus, NuCaloric, Sekiguchi and CyberAcme all gate their better rewards behind early contract work. If you are following the Season 2 progression path, the two things worth prioritising next are faction rank (which Bungie explicitly sped up for Nightfall) and Vault space, since the wipe left you at base capacity. Our Season 2 vault management and XP routing guide covers the order that stops you from bottlenecking, and the best faction upgrades breakdown tells you which nodes are actually worth your Credits. For everything else Marathon — patch coverage, contract routes and map guides — the Marathon hub keeps it in one place.

FAQ

Does it matter whether I sabotage the North or South antenna?

No. Either relay satisfies the objective. Pick whichever is closer to your spawn; South is generally the faster and safer of the two.

I sabotaged the antenna but the contract did not complete. Why?

Almost always because you died before extracting. The step banks on a successful raid exit, not on the interaction itself. Check your contract log once you are back in the menus.

Do I need a specific shell or gear for this?

No. It is a proximity-and-hold interaction. A high-mobility shell just gets you there faster. If you have Sponsored kits available, use one so a bad fight costs you nothing.

Is Perimeter still playable in Season 2?

Yes. Bungie’s Season 2 article names Perimeter as one of the four maps in the daily-rotating Duos Queue, alongside Dire Marsh, Night Marsh and Outpost. Nothing in the mid-season Update 1.1.5 notes retires it.