Thus it was that in December 1921 a group of American radio amateurs gathered in a field in Greenwich Connecticut in an attempt to span the Atlantic. Their 1.3 MHz transmitter using the callsign ...
The 47-year-old NASA Voyager 1 fell back on a radio transmitter it hadn’t used since 1981 to ping home base after a technical issue caused a days-long communication stall between Earth and the ...
Unfortunately, it's also far fainter, and the crew feared that it could no longer be detected from this far away. After all, Voyager 1 hasn't used the S-band transmitter to talk to Earth since 1981, ...