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VT-127

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ID = 13159
       
Country:
United States of America (USA)
Brand:
Developer: Eimac (brand name) 
Tube type:  Transmitting Triode, air cooled   VHF 
Identical to VT-127 = 3-100D2 = WL-534 = 100TS
Similar Tubes
Normally replaceable-slightly different:
  VT-127A
Different connections:
  327A_Eimac ; CV2618
Predecessor Tubes 100T  
Successor Tubes 1939   VT-127A  

Base SPECIAL TUBEBASE in general (Codex=Vc) Side contacts.
Was used by Radar
Filament Vf 5 Volts / If 6.5 Ampere / Direct
Description

the VT-127 radar tube was made by Eimac in the very late 1930's. It is not generally branded with the company name or type number. The glass used in the "press" was uranium, as was the glass for the lead-in wires for the two anodes and two grids. These all glow green under ultra violet light. Another feature of this early radar tube is that the grid and finned anode were made of platinum. Few have survived because after World War Two most of the tubes were destroyed to reclaim the platinum. It was a VHF triode dissipating 100 watts.

Developed from 1937 for use in the transmitter section of SCR-268 radar. Sixteen tubes in a ring oscillator generated 75 kW pulses at 208 MHz.

Also manufactured by Heinz & Kaufman, Sylvania, Westinghouse and ICE.

The very early samples were fitted with a 4-pin metal UX base, as shown in the collection of Norman Wilson N6JV.

 
Dimensions (WHD)
incl. pins / tip
103 x 138 x 52 mm / 4.06 x 5.43 x 2.05 inch
Weight 96 g / 3.39 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Collector info (Sammler)   
Tube Lore (II)

vt127_so.png VT-127: ARRL Handbook 1972
Anonymous 10 Collector

More ...

Collection of

 
vt_127_eimac_rmf_img_02.jpg

VT-127
 

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