signal

beep

sound

movie

radar

sonar

sos

sound fx

submarine

technical

science fiction

trailer

ambience

aliens

ambient

contacting

nasa

outerspace

planet

scifi

space

syfy

detecting

detector

antenna

detection

discovering

delay

reverb

echo

high-tech

hi-tech

locate

locating

monitoring

radio

scanning

scan

range

search

underwater

sensor

ship

cinematic

communicating

mysterious

suspenseful

scanner

strange

transmission

alien

contact

detect

discover

high tech

hi tech

communicate