Still. A square wave at 142 Hz, originating from Radio Tower. Recorded in a container environment, era: 1940s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #3560 — Still
ID#3560
Rarity
LO:53%
Frequency
142 Hz
X-HI:9%
Wave Type
Square
X-HI:10%
Resonance
Soft
X-HI:8%
Era
1940s
EX:4%
Origin
Radio Tower