Amplifex Frame Aerial

Made:
circa 1924 in Arlington
maker:
Amplifex Radio Corporation
Amplifex Frame Aerial

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Amplifex Frame Aerial
Science Museum Group
© The Board of Trustees of the Science Museum

Amplifex frame aerial. Early frame aerial for home wireless set made by Amplifex, United States.

A frame or loop aerial uses wire wrapped multiple times round a support structure. The aerial was convenient for confined spaces where there was less opportunity to run a long wire aerial.

The aerial arrangement had advantages in directivity and selectivity. Directivity measures the degree of radiation in a single direction and allows the aerial to distinguish the signal from interfering stations. Selectivity improves fine tuning to the required frequency and to reject others, creating a clearer sound.

Details

Category:
Television
Collection:
BBC Heritage Collection
Object Number:
2012-5118/341
Materials:
wood (unidentified), metal (unknown), fibre (unidentified) and electronic components
Measurements:
overall: 826 mm x 214 mm x 214 mm, 2.5 kg
type:
aerial