Radio engineering time travel (to 1921)

I invite you to look at the "pictures" related to radio technology. They come from various sources. The gallery has its sister version in Polish and Russian. Versions in other languages will be added successively. More detailed descriptions can be found in other language versions (articles are related and can be displayed by clicking on the icons with flags on the left, top of the TRIODA website). Of course, I will complement translations of signatures quite slowly. All descriptions are displayed using the present tense and not the past - this is not a mistake only deliberate action - a reference to the original descriptions from those years. In order not to delay the possibility of viewing the gallery, this site is made available as a "site under construction" - for which I apologize to all guests. At the beginning and end of each set of photographs there are links allowing to change the period - calendar year.

[Next period]


The New Palo Alto Station of the Federal Telegraph Co. - Main Power Switchboard
(Radio for November, 1921)


The Continuous Wave Club of California, Radio 6ALE, Upper View Showinh Transmitting and Lower View Sending Equipment
(Radio for November, 1921)

 
6ZAF Picking Up Radio Time Signals in Lower California
(Radio for November, 1921)

 
Miss Ruth Philipps, San Francisco Soprano, singing over the De Forest Radiophone at the California Theatre
(Radio for November, 1921)

 

Hook-up for 6-stage Amplification
(Radio for November, 1921)

 
Famous "Chi-Rad" K.D. Variometer Parts
All parts to build two variometers and one coupler. All windings in place - nothing to do but screw on bearings and connect up. Complete set can be assembled in 30 minutes. The biggest value on the marker - order a set today. Immediate delivery. Price, complete as shown, $10.00.
CHICAGO RADIO APPARATUS CO., Inc.
(Radio for November, 1921)


(Radio for November, 1921)

 
6AQA at Los Angeles, Calif.
(Radio for December, 1921)

 
Gerald M. Best, 6JX and 6XAF, Who Answers Queries and Replies on C.W. Practice
(Radio for December, 1921)

[Next period]