Cosmic Call

Cosmic Call was the name of two sets of interstellar radio messages that were sent from RT-70 in Yevpatoria, Crimea in 1999 (Cosmic Call 1) and 2003 (Cosmic Call 2) to various nearby stars. The messages were designed with noise-resistant format and characters.

The project was funded by Team Encounter, a Texas-based startup that went out of business in 2004.

Both transmissions were at ~150 kW, 5.01 GHz (FSK +/-24 kHz).

Each Cosmic Call 1 session had the following structure. The Scientific Part (DDM, BM, AM, and ESM) was sent three times (at 100 bits/s, and the Public Part (PP) was sent once (at 2000 bits/s), according to the following arrangement:

where DDM is the Dutil-Dumas Message, created by Canadian scientists Yvan Dutil and Stephane Dumas, BM is the Braastad Message, AM is the Arecibo Message, and ESM is the Encounter 2001 Staff Message.

Each Cosmic Call 2 session had the following structure:

where DDM2 is modernized DDM (aka Interstellar Rosetta Stone), BIG is Bilingual Image Glossary. All but the PP were transmitted at 400 bits/sec

The messages were sent to the following stars:

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