Drone 19. A am wave at 741 Hz, originating from Subway Tunnel. Recorded in a anechoic environment, era: 1980s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #3087 — Drone 19
ID#3087
Rarity
LO:70%
Frequency
741 Hz
X-HI:5%
Wave Type
AM
EX:5%
Resonance
Cold
X-HI:10%
Era
1980s
X-HI:8%
Origin
Subway Tunnel