Keen. A square wave at 220 Hz, originating from Space Station. Recorded in a open air environment, era: 1970s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #0637 — Keen
ID#637
Rarity
X-HI:12%
Frequency
220 Hz
X-HI:8%
Wave Type
Square
X-HI:10%
Resonance
Viscous
EX:3%
Era
1970s
X-HI:6%
Origin
Space Station