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History of the manufacturer  

Keystone Radio Service Co.; Los Angeles, California

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Name: Keystone Radio Service Co.; Los Angeles, California    (USA)  
Abbreviation: keystone
Products: Model types
Summary:

In November of 1922 the Keystone Radio Service Company was located on the ground floor of the Mason Opera House at 125 South Broadway in Los Angeles, California.

In a Nov. 1922 Radio Journal the company offered the Keystone Super Receiver for $200.

History:

This manufacturer was suggested by Alan Larsen.


Some models:
Country Year Name 1st Tube Notes
USA  22 Keystone Super Receiver    

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Further details for this manufacturer by the members (rmfiorg):

July 1922 Radio Journal magazine advertisement page 113tbn_usa_keystoneradio_july_1922_radio_journal_page_113.jpg
November 1922 Radio Journal magazine advertisement page 345tbn_usa_keystone_nov.1922radiojournal_page_345.jpg

  
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