Quartz Crystal - Unknown Manufacturer, 1950-1959 Object Reg. No: HT 26141

This is a vacuum mounted quartz crystal. It would have been used to control the frequency of a transmitter.
Shouldered glass bulb mounted on a four pin UX style base.
Discipline: Technology
Dimensions: 115 mm (Height), 45 mm (Diameter)

More information

Tagged with: transmitters
Themes this item is part of: Information & Communication Collection
Primary Classification: ELECTRONICS
Secondary Classification: Vacuum Technology
Tertiary Classification: frequency control
Inscriptions: On metal inside bulb: " 5R2241/2 / 630 KC "
On base: " LICENSED ONLY TO EXTENT / INDICATED ON CARTON/1 over 4 (excise mark) "

Accompanying note:
Crystal, vacuum packed, in valve envelope, 630 kHz probably 1950s
Manufacturer (Possible): Amalgamated Wireless (Australasia) Ltd (AWA), Australia, 1950-1959

The excise mark (1 over 4) belongs to AWA

Add your comment

  • Museum Victoria does not provide valuations, for more information please visit the valuation infosheet
  • Please note that Museum Victoria staff will not normally respond to comments posted on our website.


This item is part of the following themes:

Similar items

Yes No