International Cometary Explorer (ISEE-3) Beacon Signal Detected

"On March 1st and 2nd, 2014 radio amateurs were able to detect the beacon signal from the retired NASA deep space probe ICE (International Cometary Explorer) at the Bochum Observatory (Germany). After some changes to the ground equipment and aligning the receive antenna to the predicted position in the sky, the beacon signal could positively be identified due to its frequency, the position in the sky and the frequency shift due to the radial velocity (Doppler shift). For this detection the 20m radio telescope from the Bochum Observatory was used. In 2003, AMSAT-DL converted this former industrial monument into a fully functional groundstation for deep space probes. Since 2009 the facility is being used by volunteers almost full time as ground receive station for data from the STEREO mission with its two spaceprobes monitoring the sun from different viewing angles."

- More at AMSAT-DL and Bochum Observatory receive signal from retired NASA spacecraft

- NASA Could Try To Contact ISEE-3/ICE - But It Won't, earlier post

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