Image: 1920s TRF radio manufactured by Signal
Size of this preview: 800 × 551 pixels. Other resolutions: 320 × 221 pixels | 3,088 × 2,128 pixels.
Original image (3,088 × 2,128 pixels, file size: 3.16 MB, MIME type: image/jpeg)
Description: 1920s TRF radio manufactured by Signal Electric MFG. CO. located in Menominee Mich. Demonstrates early radio construction methods using "breadboard"
Title: 1920s TRF radio manufactured by Signal
Credit: Own work
Author: Armstrong1113149
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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