FREQUENCIES


Home


Wireless (pre-1920) Radios


Marconi Wireless (pre-1920) Sets


Tubes & Valves


Crystal Set Radios


Antique Radios (1920s)


Antique Radios (1930-1960s)


Antique Radio Advertising


Radio Speakers & Microphones


Articles on Antique Radio I Have Written


Wanted Radios


Tubes for sale


Tube Amplifiers


Defeating Depression book by Howard Stone


Interview of Howard Stone on Tube Talk Classic Radio Show


Early Books and Literature on Radio, Tubes, & Electricity


Contact Me


Radio Receptor One Tube Universal Tuner Type T D Radio
Radio Receptor One Tube Radio Receiver. This exposed tube radio from about 1921-22 could be hooked up in two ways. If you used P1 and P2 on the right side of the set to hookup the headphones you had a TRF receiver. If you moved the headphones to TC1 & TC2 you had a regenerative receiver. The instructions warned that if you used TC1 and TC2 "All regenerative hook-ups infringe on patents by Major Edwin A. Armstrong and no responsibility is taken by the manufacturer if the connections of this set are so changed." The regenerative circuit would work better and I suspect most users of this set used it.

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).

Copyright 2003-2004 Howard Stone PhD.
stonevintageradio@gmail.com