History of Lost Signal

Overview

Lost Signal is a Legendary Stasis Grenade Launcher from Episode: Echoes (burst-fire area-denial frame similar to Witherhoard). Like other Echoes weapons it carries the Radiolaria Transposer origin trait tied to Radiolaria fluid. Community roll guidance (PvE picks per TheGamer): Auto-Loading Holster with Vorpal Weapon.

Acquisition

Destinypedia lists Lost Signal among the Act 1 rewards of Breach Executable on Nessus. Its flavor text quotes Failsafe. Echoes weapons are Legendary and were not covered by sunsetting. None of the sources I opened confirmed whether a craftable pattern exists or an Adept variant, so check in-game. See also Weapon crafting and Episode: Echoes.