[daip] Antenna problem for exp. code BL214A

[Rocco Lico]

Dear NRAO staff,

I write this email to report an antenna problem in some scans of the recent VLBA observing experiment BL214A (02-FEB-2015).

There is a problem for Los Alamos station (and consequently for all the baselines with it), that is not reported in the observing log file, for all the three observing frequencies (15, 24 and 43 GHz) only in the 6th and 8th scans. During these two scans the VLBA was observing the target source (J1555+1111). However, there are no problem for the intermediate 7th scan, while the calibrator J1310+3220 was observed.
This problem clearly emerges from an inspection with the aips task POSSM.

We made several attemps to try to solve this problem but without success. Could it be due to a technical problem of the antenna?

Thank you very much for considering this issue.
Best regards,
Rocco Lico.