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Johnson Crystal Calibrator
Object/Artifact
-
Radio Alpha
Image: CQ, Sep 1955
Name/Title
Johnson Crystal Calibrator
Description
Crystal Calibrator
Category
Frequency Standard
Made/Created
Manufacturer
E. F. Johnson
Date made
1955 - 1956
Valuations
Value
$17.25
General Notes
Note
QST, Jun 1955, p. 143.
