Siege Becon is acquired during Siege on Asphodel in the Asphodel mission tier (~1% chance).
- 2, along with other components, are required to initiate an Asphodel Vanguard
|Casing ~ Motor ~ Piston ~ Power Supply ~ Zenith Processor|
|Pulse Core ~ Tremor Core ~ Beacon ~ Xeno Transcoder ~ Xeno Decoder|
|Quantum Beacon ~ Infested Beacon ~ Gateway Node ~ Siege Beacon ~ Nexus Beacon|
|Enclave Beacon ~ Gorgon Beacon ~ Mortifex Beacon ~ Hydra Beacon ~ Lithid Beacon ~ Arachis Beacon|