Antique radios, Old Time Radios
1B42
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Country:
United States of America (USA)
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| Identical to |
1B42
= D-170135
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| First Source
(s) |
15.Dec.1947 : Tube Lore (I)
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| Was used by |
Radar |
| Filament |
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| Description |
Series spark gap intended for high-power radar modulator circuits. Cathode is formed by mercury immobilized by a cup-shaped iron sponge, anode is a 0.06" diameter molybdenum rod.
Mercury evaporates due to the sparks, then condenses and returns into the iron sponge, so to always have fresh mercury film over the cathode surface. Hydrogen filling to minimize the jitter
80 to 300 A pulses, 5 kV breakdown voltage.
Introduced by WE during WWII as D-170135. RMA registration in 1947. Also manufactured by Machlett.
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Dimensions (WHD)
incl. pins / tip |
76 x 152 x mm / 2.99 x 5.98 x inch |
| Information source |
Tube Lore (I)
-- Original-techn. papers. Glasoe & Lebaqz, Pulse Generators
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1B42: Manufacturer's Literature
Emilio Ciardiello
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