ARISS, NASA, and ESA Continue to Probe Amateur Radio Problems on ISS 03/03/2021 Amateur Radio on the International Space Station ( ARISS) International Chair Frank Bauer, KA3HDO, reports that the ARISS team has been working closely with NASA and the European Space Agency (ESA) to identify what may have caused what ARISS is calling a “radio anomaly” on January 27. The net result has been an inability to use the NA1SS ham station gear in the ISS Columbus module. For the time being, ARISS school and group contacts with crew members have been conducted using the ham station in the ISS Service Module. The radio issues came in the wake of a January 27 spacewalk during which astronauts installed new cables (essentially feed lines) to support the commissioning of the Bartolomeo attached payload capability mounted on the Columbus module. The job involved re-routing the cabling of the ARISS antenna to the ARISS radio system onboard Columbus.