[IGSSTATION-3535]: PTBB External frequency changed to active H-Maser

[Rudi Stöger <stoeger @ fs.wettzell.de>]

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IGS Station Mail          02 Feb 01:53:55 PST 2010      Message Number 3535
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Author: Rudi Stoeger

Ladies and Gentlemen

My colleagues changed the external frequency
for the ASHTECH Z-XIIT (Ashtech Model Z-12
Metronome WP103 P/N 800926) from the
Cesium Frequency Standard CS2 to the active H-Maser
and downstream phase shifter in the
PTBB GPS Permanent Tracking Station in the
Physikalisch-Technische Bundesanstalt PTB Braunschweig,
Germany, 2010-01-28.

With best regards
Rudi