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History of the manufacturer  

Radolek Co., Chicago

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Name: Radolek Co., Chicago    (USA)  
General || Keystone || King || Marvelo || Monroe-Marvelo || Pioneer
Abbreviation: radolek
Products: Model types Others

Radolek Company, 601 W. Randolph St., Chicago, Illinois.

Trade names General, Keystone, King, Marvelo, Monroe-Marvelo, Ozarka, Pioneer, Radolek.

The trade name Ozarka is mentioned in "The Radio Collector's Directory and Price Guide 1921 - 1965" 2nd Edition. Currently no more evidence available for or against this connection.

Some models:
Country Year Name 1st Tube Notes
USA  38/39 Record Player portable   With built-in amplifier and speaker. 
USA  34 10980    
USA  30/31 Marvelo 30 All electric Screen Grid Receiver Catalog= 201A50101   The Marvelo model 30 "All electric Screen Grid Receiver" has a push-pull output with scree... 
USA  46/47 G17659   115 V., 60 cycle AC operation. 
USA  31 Marvelo Baby Grand    
USA  34 Model X 6D6  speaker grille variant to 10966 
USA  36 10988   see also model 986, similarity not yet veryfied. 
USA  36 10987   see also model 986, similarity not yet veryfied. 
USA  36 10986   see also model 986, similarity not yet veryfied. 
USA  36 10966 [1936 Model]   see also model 966, similarity not yet veryfied. 
USA  36 10956 [1936 Model]   see also model 956, similarity not yet veryfied. 
USA  36 10953 [1936 Model]   see also model 953, similarity not yet veryfied. 


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

Original 1938 Radolek Ordertbn_us_radolek_1938_order.jpg
Original 1938 Radolek Envelopetbn_us_radolek_1938_envelope.jpg
Scanned from the Radio Retailing September 1946 page 80.tbn_rr_sep46_p80.jpg