I own one RACAL-DANA 1992 (Standard- TCXO).  I purchased one with the 
Option 04E on eBAY.

          The 04E chassis is sealed and the internal OCXO overheats due to lack 
of cooling air.  This causes the counter to stop taking measurements.  I had to 
add ventilation holes on the top and right side of the chassis lid to obtain 
reliable operation.

          Both counters work up to 1,750 MHz.

Bill Hanna

 


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