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Radio hams help attempts to command NASA spacecraft

An IEEE article describes how volunteers, including many radio amateurs, are attempting command a 35-year-old NASA spacecraft, the International Sun-Earth Explorer 3 (ISEE-3). Rachel Courtland interviews Dennis Wingo KD4ETA about the project and mentions the Bochum facility where AMSAT-DL members will be using their 20 metre dish antenna to help establish communications. Software-defined radio peripherals built by Ettus Research (founded by Matt Ettus N2MJI) have been purchased, which can be used to implement modulator and demodulator programs that would once have had to be built in hardware. Read the IEEE article at Spectrum IEEE.

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