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VLBI Terminal Upgrade at PicoVeleta

During September and October the VLBI terminal at the 30m telescope was upgraded to ``VLBA4" specification, which uses two tape heads simultaneously to double the available recording bandwidth. The modifications were carried out by Salvador Sanchez together with Michael Wunderlich and Arno Freihold of MPIfR Bonn. New software was also installed. The increased bandwidth is particularly useful to enhance sensitivity at short mm wavelengths. The enhanced system was then successfully used in the first mm-VLBI session ever carried out with 512Mbit/s recording. Effelsberg, Haystack, Onsala and Metsaehovi observatories also took part, all stations performed as expected and verified the high sensitivity expected.

Further information can be found at

On behalf of the VLBI group D.GRAHAM, MPIfR