Russia's Doomsday Radio is activated! 4 Word Message to Russian Spies translated

Russian Doomsday Radio broadcasts 4 cryptic messages:
NEPTUNE, TIMUS, LISOPLASCH, NUTOBACKS
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The purpose of UVB-76 — active since 1975 — is unknown. It usually static but sends coded alerts pre-major events (eg, SMO start). Some even suspect Dead Hand link —Cold War nuke failsafe