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History of the manufacturer  

DX Instrument Co.; Harrisburg, Pennsylvania

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Name: DX Instrument Co.; Harrisburg, Pennsylvania    (USA)  
Abbreviation: dxinstrumt
Products: Others

In the October 1924 The Radio Dealer magazine advertisement on page 148 the DX Instrument Company was located Harrisburg, Pennsylvania.

Brand: Fil-Ko, for their radio parts & accessories.

Sold by Radio Stores Corporation (US wide)

This manufacturer was suggested by Wolfgang Scheida.

Some models:
Country Year Name 1st Tube Notes
USA  26 Fil-Ko Radio Lightning Arrester   DX Instrument Fil-Ko Radio Lightning Arrester; 
USA  23–26 Fil-Ko-Stat   DX Instrument Fil-Ko-Stat "A Real Filament Control"; 


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

August 1923 Radio magazinetbn_usa_dx_instruments_filkostat_ad_aug23radio.jpg


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