Electrical Research Laboratories, 2500 Cottage Grove Avenue, Chicago, Illinois, USA
Last seen: 31-Dec-1920
Brand(s): ERLA, ERLA Triplelite
Two ERLA Triplelite's: 3000X1-A (equiv UX-201-A) and 3000X12-A (equiv UX-112A); no detector is listed.
The ERLA 190X9-A was their UX-199 equivalent, and the ERLA 100X20-A was their UX-120.
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- Radio Retailing, Jun-1929, pg. 267. From AmericanRadioHistory.com. Retrieved 30-Nov-2018. !
- Radio Broadcast, Dec-1929, pg. 123. From AmericanRadioHistory.com. Retrieved 30-Nov-2018. !