Obsolete Components for MK4 and VLBA

Revision 8/Apr/2008


There are a number of obsolete and obsolescent components in the MK4 and VLBA terminal hardware. This page is an attempt to gather information together on these items and to suggest replacement suppliers or strategies. Some of the items still have no supplier or other information and are present as placeholders. See also links to current spares.


Information on these pages is provided on 'best efforts' basis. No guarantees are provided as to accuracy and neither Jodrell Bank Observatory or any of the contributing parties accept responsibility for its use. Any trademarks or brand names are the property of the originators and all copyrights are acknowledged.

Spares at Effelsberg Jan 2008

Tape Recorder Items Jan 2005

Spares Pool Orders

Metrum Spares Purchase 2004

Current Hardware

Mark5 Recorder Spares and Notes 2004/5

Mk4 Terminal

VLBA Terminal

Delay/Phasecal Units


Misc Parts

Recommended Parts Lists and Stock from Onsala

Scarce-Component Related Links: Primary

Secondary/not yet followed-up:

Issued Parts: