Crystal Calibrators

This National XCU-50 Crystal Calibrator, is for the HRO-50 and HRO-60 Receivers. This unit has been tested in a working HRO-50 and appears to be working as it should. The SA8432 is the latest version of this calibrator.

This Rockwell Collins 100.000 KHZ Calibrator Crystal, is New in the Original Package Date Code 10/82  P/N 289 1424 00.  The cost to have one of these made these days is getting very expensive. This is a genuine Rockwell Collins  part!