Keith's 26 June Update: Just as our DSN window closed today we were able to get 2 way Doppler lock and ranging at a 47.5 kHz offset. DSN got the four ranging points needed from ISEE-3. This is the first time since 1999 that DSN has talked to the spacecraft. A follow-up session tomorrow should get us a lot more recording time. Hats off to the DSN guys - especially the folks at DSS-24.
Keith's 27 June Update: We had an even greater DSN pass today with ISEE-3. We managed to get ~30 minutes of data (11 range points) after achieving 2 way Doppler lock and ranging at a 47.5 kHz offset.