Stone Vintage Radio Museum - Antique Radios, Wireless, Crystal Sets, Tubes, and Valves

Telmaco TDA1 & TA2 Radio. The Telmaco TDA1 is a detector and one stage of amplification. The TA2 is two stages of audio amplification. They were manufactured by the Telephone Maintenance Co. in Chicago in the early 1920s. The Telmaco TDA1 and TA2 use 01A tubes.

Unless otherwise noted, all materials contained on this web site are copyright protected. Materials may be downloaded and/or reprinted for personal use only. Permission to reprint or electronically reproduce any document or graphic in whole or in part for any non-personal or commercial use is expressly prohibited unless prior written consent is obtained from the respective copyright holder(s).