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| View Original: | Violet McKenzie with wireless.png (698x550) | |||
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| Keywords: Violet McKenzie with wireless.png triode vacuum tube to amplify the signal indicated by the hole in the front panel used to check whether the filament was still glowing Small sets like this did not have enough power to drive a loudspeaker and so had to be listened to with earphones The tuning dial was not calibrated in kHz or MHz like modern radios so radio stations had to be found by trial and error When a radio station was found the number on the dial was noted down as this woman is doing so it can be found again The top wire goes to a long wire antenna ~ 1922 http //www dictionaryofsydney org/item/56945 Ex-Wrans Association of New South Wales custom PD-Australia Uploaded with UploadWizard Florence Violet McKenzie Radio in the 1920s YL radio Females with headsets Temporary for Cat-a-lot - Female humans Females with machines Trial and error | ||||
