Say "Hi" to Juno
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MORSE CODE BEAMED INTO SPACE: When NASA's Juno spacecraft flew past Earth on Oct. 9th, ham radio operators around the world took part in a global effort to communicate with the spacecraft. Organized by the Juno mission team and JPL, the hams slowly tapped out "Hi" in Morse code: . In New Mexico, amateur radio astronomer Thomas Ashcraft was observing the heavens with his own shortwave radio telescope when he heard the transmissions:

"The patterned keying from amateur radio operators was noted clearly on my radio telescope," says Ashcraft. "In the dynamic spectrum, shown above, it is the series of horizontal 'dots' just above 28 MHz." Listening to this seven minute extract of the signal pattern sent to Juno takes patience, so Ashcraft sped up the recording by 10 times. "Here it is," he says.

Juno listened for the message using its onboard WAVES instrument, a radio and plasma wave sensor designed to study magnetic storms at Jupiter. Did Juno actually hear anything? The Juno mission team wrote this on the event's home page: "Thank you amateur radio operators. This activity is now concluded. The Juno team hopes to share the results with you soon."



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