The This page will give information and links concerning VLBA Testing issues on which I am working.

SQUINT: TEST MEMO 64 describes the use of the squint to detect crossed polarizations.

PN3DB Tests: Information on the quality of antenna tracking can be obtained by tracking strong sources near the antenna beam half power point. Any tracking irregularities show up in power variations. Results from such observations in May 2001 are described in VLBA TEST MEMO 65. The memo only includes plots for one source per station. The full set of plots can be seen are at this link. Warning, even gzipped, this file is almost 1.4 Mbytes.