Illustration of demonstration wireless circuit "valve as an oscillator" used as an aid in ...

Accession Number 100626
Collection type Photograph
Object type Negative
Conflict Second World War, 1939-1945
Copyright

Item copyright: Copyright expired - public domain

Public Domain Mark This item is in the Public Domain

Description

Illustration of demonstration wireless circuit "valve as an oscillator" used as an aid in instruction by Australian School of Signals.