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<DIV><FONT face=Arial size=2><SPAN class=233330622-24062000>Dear designated
AIP:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=233330622-24062000></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=233330622-24062000>I am once again
stymied by the phase calibration using PC tables for VLBA reduction. When I last
discussed this with AIPS staff in 1998 (Ketan I think), it was broken and being
worked on.</SPAN></FONT><FONT face=Arial size=2><SPAN class=233330622-24062000>
I have installed 31DEC99 AIPS and am reducing VLBA data from April 2000 with
attached PC table. I believe I have followed the cookbook recommendations and
have applied the attached PC table correctly using CLCOR followed by CLCAL.
However, the POSSM plots clearly show that the phase cal didn't work.
</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=233330622-24062000></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=233330622-24062000>My question is: does
phase calibration across IFs with the supplied PC tables work? If so, is there
some subtlety involved that I need to be aware of?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=233330622-24062000></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=233330622-24062000>Thanks,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=233330622-24062000></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=233330622-24062000>Robert
Mutel</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=233330622-24062000></SPAN></FONT> </DIV></BODY></HTML>