This loads a font easier to read for people with dyslexia.
This renders the document in high contrast mode.
This renders the document as white on black
This can help those with trouble processing rapid screen movements.

7mm ATCA LO Configuration checker

It was found in November 2013 that the algorithm used to set the LO frequency chain required to observe in the 7mm band (frequencies between 30 and 50 GHz) was sometimes causing small frequency offsets. The problem, once discovered, was quickly fixed, but all observations made in the 7mm band between 2011-April-7 and 2013-December-2 may have suffered because of this fault.

This page is here so you can assess if your observations have been affected by this problem, and what the frequency offset was. To do this, simply enter the central frequencies of the two simultaneous IFs you used and press the "Check" button.

If you have any questions about the problem, or this page, please contact Jamie Stevens.

Simultaneous central frequencies: