|[AMRadio] National Calibrator|
ars-w5jo at brightok.net
Sat Aug 15 15:25:48 EDT 2009
Has anyone ever worked on a National XCU 50 crystal calibrator?
Specifically I am curious about the Valpey crystal in it. The one
meg side is not working and I believe the quartz slab may be cleaned
to restore operation. The caveat is I am a bit hesitant to open the
case without knowing what to expect.
Has anyone here ever taken one apart that can tell me how they are
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