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Gammatron_254

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ID = 58835
       
Country:
United States of America (USA)
Brand: Heintz & Kaufman Ltd. (Gammatron); San Francisco, CA
Developer: Heintz & Kaufman Ltd. (Gammatron); San Francisco, CA 
Tube type:  Transmitting Triode, air cooled 
Identical to Gammatron_254 = HK254

Base Jumbo 4-pin bayonet (1918) Sidecontact and top contact.
Was used by Transmittertube (Radio)
Filament Vf 5 Volts / If 7.5 Ampere / Direct
Description

This code can be found printed on some tubes manufactured by Heintz & Kaufman: 'Gammatron' was used as trademark by this manufacturer.
4-pin Jumbo base.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
69 x 184 x mm / 2.72 x 7.24 x inch
Weight 142 g / 5.01 oz
Information source Radio Shack Catalog   1939, page 10
Babani, International Radio Tube Encyclopaedia   p. 178 & 179

hk254~~2.png Gammatron_254: orig. doc.
Wolfgang Holtmann


Just Qvigstad
img071~~1.png
Gammatron_254: The Radio Amateur's Handbook, 1942
Stig Comstedt

 

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