G18 was a numbers station thought to be run by Czechoslovakia Intelligence. Since the format, and especially the intro notes are similar to S10, this is most likely the case. G18 only has two known recordings of it from The Conet Project and Simon Mason’s Website. The station ceased operations in 1973.
|Solfège Eight notes rising and falling scale||51409||57||22||Achtung, Achtung, Achtung||50067 50067
91504 91504 …
|Interval Tones||5-figure ID, possibly the recipient||2 Figure ID, unknown purpose||Group count||5-figure paired groups||5-figure ID, possibly the recipient||2 Figure ID, unknown purpose||Group count|
Numbers Station Summary
Nickname: 8 Note Rising and Falling
Emission mode: AM
Voice Summary: Automated woman’s voice. Low tone and spoke slowly.
Believed Country of Origin: Rumored East Germany, possibly Czechoslovakia
Counterpart Stations: S10, M10, M07, M11, S10d
Station Family: Family 9 “Czech” (Possibly)